Which HALS is suitable for agricultural film?

Agricultural film requires strong UV protection together with resistance to pesticides, sulfur-containing chemicals and repeated outdoor exposure. High-molecular-weight HALS are commonly considered for long service life, but the final grade must be compatible with the film resin, thickness and agrochemical environment. Sulfur-resistant or less basic HALS may be needed in demanding greenhouse applications. Validation should include accelerated weathering and chemical-exposure testing.

Why can acidic pigments or flame retardants reduce HALS performance?

Conventional HALS contain basic amine functionality. Acidic pigments, halogenated flame-retardant systems, acidic fillers or certain catalyst residues can interact with or deactivate the HALS, reducing light-stabilization efficiency. In such formulations, formulators may consider less basic or NOR-type HALS, adjust the additive package, or use acid scavengers where appropriate. Compatibility testing is necessary because the interaction depends on the full formulation.

How do high-molecular-weight HALS differ from low-molecular-weight HALS?

Low-molecular-weight HALS generally disperse easily and can provide rapid stabilization, but they may be more prone to migration or extraction. High-molecular-weight or oligomeric HALS usually offer lower volatility, better extraction resistance and longer service life, which is valuable in films, fibres and outdoor articles. The best choice depends on polymer compatibility, article thickness, exposure conditions and contact with water, detergents or chemicals.

Are plastic additives suitable for food-contact or regulated applications?

Suitability depends on the exact additive grade, polymer, use level, food type, temperature and destination market. A general technical grade should not automatically be described as food-contact compliant. Buyers should define the applicable regulation and request supporting declarations, substance identity, purity data and migration or extraction information where required. SUNCHEM can check available documentation for a specific product and supplier, but the finished-material manufacturer remains responsible for confirming compliance of the final formulation and article.

Can UV absorbers and HALS be used together in the same plastic formulation?

Yes. UV absorbers and HALS are frequently used together because they protect the polymer through different mechanisms. The UV absorber reduces the amount of damaging radiation entering the material, while the HALS suppresses radical reactions caused by photo-oxidation. The optimum ratio depends on polymer type, article thickness, pigment system, outdoor exposure and service-life target. Compatibility must also be checked because acidic additives, certain pigments and some flame-retardant systems can reduce HALS effectiveness.

Can you provide COA, SDS/MSDS, and TDS?

Yes. COA, SDS and TDS are available for suitable products. Availability depends on the exact product, manufacturer, destination market and order stage. Additional declarations or test reports can be checked case by case after the buyer provides the product, application and regulatory requirements.

Can you supply both branded and custom specifications?

SUNCHEM supplies selected branded product lines and can evaluate custom specifications or alternative grades through qualified manufacturing partners. Feasibility depends on chemistry, volume, test methods, regulatory requirements and development cost. Custom products require technical review and sample approval before commercial supply.

Do you support long-term supply agreements?

Yes. SUNCHEM can support scheduled deliveries, annual-volume planning, specification management, quality documentation and supply-risk coordination for approved products. Commercial terms depend on forecast accuracy, product availability, payment terms and destination logistics.

Do you support samples?

Sample support is available for qualified evaluation projects, subject to product type, supplier policy, quantity, destination and shipping restrictions. Please provide the product or CAS number, target application, required quantity and courier details. Hazardous or restricted products may require additional review.

How can additive migration, blooming or plate-out be reduced?

Migration and blooming usually occur when an additive has limited compatibility with the polymer, is used above its solubility limit, or is exposed to heat over time. Plate-out may also result from volatility, decomposition or interaction with lubricants and other formulation components. These problems can often be reduced by choosing a higher-molecular-weight or polymeric grade, lowering dosage, improving dispersion and checking the complete additive package. Processing temperature, cooling conditions and storage tests should be included in the evaluation.

How do I choose an antioxidant package for PP, PE, ABS or engineering plastics?

Start with the polymer, processing temperature, residence time, expected service temperature and required regulatory status. PP and PE commonly use a hindered phenolic antioxidant together with a phosphite, while long-term heat ageing may require a thioester synergist. ABS and engineering plastics may need additives with higher thermal stability, lower volatility or better colour control. Other formulation components, including pigments, fillers, recycled resin and flame retardants, can change the required package. The final formulation should therefore be validated by melt-flow, colour, oven-ageing and application-specific testing.

How do I request a quotation?

Send the product name or CAS number, required specification, quantity, application, destination port, preferred Incoterm and documentation requirements. These details allow SUNCHEM to confirm a suitable supply source, packaging, lead time and freight basis before issuing a quotation.

How do I select a halogen-free flame retardant for a plastic application?

Selection begins with the polymer and the required fire standard, such as a target UL 94 rating, limiting oxygen index or smoke requirement. Phosphorus-based systems are commonly considered for PC/ABS, epoxy and intumescent polyolefin applications; melamine-based products are used in selected polyamides; and mineral flame retardants such as aluminum hydroxide or magnesium hydroxide require relatively high loadings. Mechanical properties, processing temperature, moisture sensitivity, electrical performance and colour must be evaluated together with flame resistance. A material described as halogen-free should also be checked against the customer's specific regulatory or test definition.

How much plastic additive should be used in a formulation?

There is no universal dosage. Antioxidants, UV stabilizers and flame retardants have very different use levels, and the effective concentration depends on the polymer, processing history, product thickness, exposure conditions and performance target. Supplier starting ranges can be used for initial trials, but the lowest-cost formulation is not always the lowest dosage because synergistic combinations may perform better. Final dosage should be established through laboratory compounding and tests such as colour, melt-flow retention, oven ageing, weathering and the required flammability standard.

What are the main types of plastic additives and what does each type do?

Plastic additives are selected according to the degradation or processing problem that must be controlled. Primary antioxidants interrupt oxidation reactions, while secondary antioxidants decompose hydroperoxides formed during processing. UV absorbers absorb harmful ultraviolet energy, and hindered amine light stabilizers (HALS) slow photo-oxidation. Flame retardants reduce ignition or flame spread, while processing aids, lubricants, nucleating agents and other specialty additives improve manufacturing or end-use performance. The correct package depends on the polymer, processing temperature, service environment and regulatory requirements.

What information is needed to recommend the right plastic additive?

Please provide the polymer type and grade, processing method and maximum processing temperature, existing formulation, problem to be solved, target service life, exposure conditions, required test standard and destination-market compliance needs. For replacement projects, include the current additive name, dosage and performance gap. This information allows a supplier to compare suitable antioxidant, light-stabilizer, UV-absorber or flame-retardant options and reduces unnecessary trial work.

What is the difference between UV absorbers and HALS light stabilizers?

UV absorbers protect polymers by absorbing ultraviolet radiation and converting it into less harmful energy. HALS do not mainly absorb UV light; instead, they interrupt the photo-oxidation cycle and regenerate during the stabilization process. UV absorbers are especially useful where sufficient material thickness allows effective absorption, while HALS are highly effective in many outdoor plastics, coatings and thin articles. In demanding applications, a UV absorber and a HALS are often combined to improve colour retention, gloss and mechanical-property retention.

What is the difference between plastic additives and masterbatch?

A plastic additive is the functional chemical itself, while a masterbatch is a concentrated mixture of additives or pigments dispersed in a carrier resin. Masterbatch can simplify dosing, reduce dust and improve dispersion, but the carrier and active-content level must be compatible with the final polymer and process.

What is the difference between primary and secondary antioxidants for plastics?

Primary antioxidants, commonly hindered phenols, donate hydrogen to free radicals and help stop the oxidation chain reaction during processing and service life. Secondary antioxidants, such as phosphites and thioesters, decompose hydroperoxides before they generate additional radicals. They are often used together because the combination provides better processing stability and longer-term heat ageing protection than either type alone. Selection and dosage should be confirmed through formulation trials because polymer type, temperature and exposure conditions strongly affect performance.

What plastic additives does SUNCHEM supply?

SUNCHEM supplies antioxidants, light stabilizers, UV absorbers, flame retardants, optical brighteners, polymerization inhibitors and selected processing additives from qualified Chinese manufacturers. Core product lines include SUNNOX® antioxidants, SUNLIGHT® HALS, SUNSORB® UV absorbers and SUNFR® flame retardants. Availability, specification and documentation depend on the exact grade and intended application.

Can SUNCHEM support equivalent-grade evaluation for branded plastic additives?

SUNCHEM can help screen Chinese supply options against the buyer's target specification, application and documentation requirements. Equivalent-grade evaluation should compare chemical identity, active content, physical properties, impurity profile and performance in the customer's formulation. A proposed alternative should not be treated as automatically interchangeable; sampling and application testing remain necessary before commercial approval.

How can buyers compare plastic additive suppliers beyond price?

Compare product identity, test methods, batch consistency, impurity profile, colour, volatility, packaging, documentation, production capacity and change-control practices. Also evaluate whether the supplier understands the application, can support samples and complaints, and can maintain supply during raw-material or logistics disruptions. A lower unit price may create higher total cost if quality variation causes production loss or reformulation.

How should plastic additives be stored and what affects shelf life?

Most plastic additives should be kept in unopened original packaging in a cool, dry, well-ventilated area away from heat, direct sunlight and moisture. Liquid phosphites and hygroscopic products may require tighter moisture control, while powders should be protected from contamination and caking. Shelf life depends on the exact grade, packaging and storage conditions, so the supplier's product-specific recommendation should be followed.

What documents should be checked when sourcing plastic additives from China?

Buyers should review the current specification, recent COA, SDS, TDS, manufacturing origin, packaging, shelf life and any required regulatory declarations. For sensitive applications, confirm test methods, impurity limits, registration status, food-contact support, RoHS or REACH information and change-control procedures. Documents should match the exact grade and manufacturer rather than a generic product name.

How can yellowing caused by antioxidant degradation be reduced?

Yellowing can result from excessive processing temperature, long residence time, an unsuitable antioxidant package, interactions with pigments or flame retardants, or contamination in recycled resin. It can often be reduced by improving temperature control, using a more hydrolytically stable phosphite, balancing primary and secondary antioxidants, and checking additive purity and compatibility. Comparative colour testing after extrusion and heat ageing is essential before changing the formulation.

What is the difference between Antioxidant 1010 and Antioxidant 1076?

Antioxidant 1010 is a high-molecular-weight hindered phenolic antioxidant with very low volatility and is widely used in polyolefins, engineering plastics, elastomers and adhesives. Antioxidant 1076 is also a hindered phenol, but it has a lower molecular weight and can offer easier incorporation in some polymer systems. Both provide long-term thermal oxidation protection. The preferred grade depends on polymer type, processing temperature, volatility requirements, colour target and the other stabilizers in the package.

When should DSTDP or DLTDP be added to an antioxidant package?

DSTDP and DLTDP are thioester secondary antioxidants used mainly when long-term heat-ageing performance is important. They are commonly combined with hindered phenolic antioxidants in polyolefins, wire and cable compounds, automotive parts and other applications exposed to elevated temperatures. They are less focused on initial colour than phosphites and more focused on extended thermal stability. Compatibility, odour, extraction resistance and regulatory requirements should be checked for the final application.

Why are Antioxidant 1010 and Antioxidant 168 often used together?

Antioxidant 1010 is a primary antioxidant that interrupts free-radical oxidation, while Antioxidant 168 is a phosphite secondary antioxidant that decomposes hydroperoxides formed during processing. Using them together provides complementary protection against melt-processing degradation and longer-term ageing. The ratio should be optimized for the polymer, processing temperature, recycled content, colour requirements and expected service life.

Do UV absorbers affect the colour or transparency of plastics?

A properly selected UV absorber normally has limited effect on visible transparency at recommended use levels, but some grades can contribute a slight initial colour or haze, especially at higher dosages or in very clear articles. Dispersion, additive purity, polymer compatibility and processing temperature all influence appearance. Transparent applications should be evaluated using haze, yellowness index and light-transmission measurements.

What is the difference between UV Absorber 326 and UV Absorber 327?

Both are benzotriazole UV absorbers used to protect polymers from ultraviolet degradation. Their differences in molecular structure affect absorption profile, volatility, thermal stability, compatibility and performance in specific polymers. UV 326 is commonly used in polyolefins, PVC, ABS and coatings, while UV 327 may be selected where lower volatility or different compatibility is required. Direct substitution should be confirmed through formulation and weathering tests.

Which UV absorber is suitable for polyolefin films and outdoor plastic products?

The choice depends on polymer type, film thickness, required service life, processing temperature and the presence of pigments or fillers. Benzotriazole UV absorbers are widely used because of their broad UV absorption and thermal stability. Thin films often benefit from a combined package containing both a UV absorber and a HALS. Final selection should be validated through accelerated weathering and outdoor exposure testing.

How do high-molecular-weight HALS differ from low-molecular-weight HALS?

Low-molecular-weight HALS generally disperse easily and can provide rapid stabilization, but they may be more prone to migration or extraction. High-molecular-weight or oligomeric HALS usually offer lower volatility, better extraction resistance and longer service life, which is valuable in films, fibres and outdoor articles. The best choice depends on polymer compatibility, article thickness, exposure conditions and contact with water, detergents or chemicals.

Which HALS is suitable for agricultural film?

Agricultural film requires strong UV protection together with resistance to pesticides, sulfur-containing chemicals and repeated outdoor exposure. High-molecular-weight HALS are commonly considered for long service life, but the final grade must be compatible with the film resin, thickness and agrochemical environment. Sulfur-resistant or less basic HALS may be needed in demanding greenhouse applications. Validation should include accelerated weathering and chemical-exposure testing.

Why can acidic pigments or flame retardants reduce HALS performance?

Conventional HALS contain basic amine functionality. Acidic pigments, halogenated flame-retardant systems, acidic fillers or certain catalyst residues can interact with or deactivate the HALS, reducing light-stabilization efficiency. In such formulations, formulators may consider less basic or NOR-type HALS, adjust the additive package, or use acid scavengers where appropriate. Compatibility testing is necessary because the interaction depends on the full formulation.

Can flame retardants reduce mechanical properties or processing stability?

Yes. High flame-retardant loading can reduce impact strength, elongation, flow or surface quality, while some products may be moisture-sensitive or thermally unstable at the polymer processing temperature. Proper particle size, surface treatment, dispersing conditions and synergists can reduce these effects. Flame performance must be balanced with mechanical, electrical and processing requirements rather than optimized in isolation.

How do ATH and magnesium hydroxide flame retardants differ?

Both are halogen-free mineral flame retardants that release water endothermically and can reduce smoke. Aluminum hydroxide decomposes at a lower temperature and is commonly used in EVA, thermosets, cable compounds and construction materials processed below its decomposition range. Magnesium hydroxide has higher thermal stability and is more suitable for polymers processed at higher temperatures. Both often require relatively high loading, so particle size, surface treatment and mechanical-property retention are important.

What halogen-free flame retardants do you offer?

Available halogen-free options may include phosphate esters such as BDP and RDP, ammonium polyphosphate, melamine-based systems, DOPO derivatives, aluminum hydroxide and magnesium hydroxide. Selection depends on the polymer, processing temperature, target fire rating, smoke requirements and mechanical-property limits. Regulatory status must be confirmed for the exact product and supply chain.

What information is required to select a flame retardant for UL 94 testing?

Provide the polymer and grade, target UL 94 rating, test thickness, processing temperature, colour, mechanical-property requirements, electrical requirements and any halogen-free or smoke restrictions. It is also important to identify fillers, pigments, glass fibre and other additives because they can change flame performance. A supplier can suggest a starting system, but the finished compound must be tested by the responsible manufacturer or an accredited laboratory.

What is DOPO used for?

DOPO is a reactive phosphorus-containing flame-retardant intermediate used in epoxy resins and other thermosetting systems, including selected electronic laminates, encapsulants and composite applications. It is often used to introduce phosphorus into the polymer structure, but formulation and curing performance must be validated in the final resin system.

What is TBBPA and where is it used?

TBBPA, or tetrabromobisphenol A, is a brominated flame retardant used mainly as a reactive component in epoxy resins for printed circuit board laminates and, in some applications, as an additive in polymers such as ABS. The suitable grade and use level depend on the resin system, target fire standard and destination-market requirements.

What is the difference between reactive and additive flame retardants?

Reactive flame retardants chemically bond into the polymer or resin network during manufacture, which can reduce migration and improve permanence. Additive flame retardants are physically blended into the polymer and are generally easier to formulate across different materials. Reactive systems are common in selected epoxy, polyurethane and unsaturated polyester applications, while additive systems are widely used in thermoplastics. The choice affects processing, mechanical properties, recyclability and regulatory performance.

Can too much optical brightener cause colour problems?

Yes. Excessive dosage may produce a bluish or greenish cast, uneven colour, fluorescence saturation or migration. The optimum level is often low and depends on the base resin, pigments, fillers and article thickness. Dosage should be established by colour measurement and visual comparison under relevant lighting.

How do I choose an optical brightener for plastics?

Selection depends on polymer compatibility, processing temperature, colour target, migration resistance and required transparency. A brightener suitable for PVC may not be ideal for high-temperature engineering plastics. Comparative trials should evaluate dosage, whiteness, hue, thermal stability and long-term colour retention.

What is an optical brightener and how does it improve polymer appearance?

An optical brightener absorbs ultraviolet light and re-emits part of it as blue visible light, reducing the visual effect of yellowing and making white or light-coloured plastics appear brighter. It does not remove the underlying cause of degradation, so antioxidant and light-stabilizer packages may still be required.

How do nucleating agents affect polypropylene performance?

Nucleating agents promote faster and more uniform crystallization in polypropylene. They can shorten moulding cycles and improve stiffness, dimensional stability or clarity depending on the grade. Performance depends on resin type, cooling conditions, dosage and dispersion.

What do processing aids do in plastic manufacturing?

Processing aids can improve melt flow, fusion, dispersion, surface finish, release or throughput. Their function depends on the polymer and process. They may reduce melt fracture in extrusion, improve PVC fusion, assist filler dispersion or lower equipment deposits. Selection must consider downstream properties and possible migration.

What is the difference between internal and external lubricants in plastics?

Internal lubricants reduce friction within the polymer melt and can improve flow, while external lubricants reduce adhesion between the polymer and metal processing surfaces. Many formulations require a balance of both. Excess lubricant can reduce fusion, printing, bonding or mechanical properties, so dosage should be optimized experimentally.

Can polymerization inhibitor concentration decrease during storage?

Yes. Inhibitors can be consumed by oxygen, radicals, contaminants, heat or light over time. Long storage, elevated temperature and poor circulation may create uneven inhibitor levels. Users should follow product-specific monitoring, temperature-control and replenishment procedures and should not rely only on the original loading concentration.

How should a polymerization inhibitor be selected for monomers?

Selection starts with the monomer chemistry, process temperature, oxygen availability, storage duration and downstream polymerization method. Some inhibitors require dissolved oxygen to work effectively, while others are used for high-temperature processing or emergency protection. Removal or residual-inhibitor requirements must also be considered.

What is the purpose of a polymerization inhibitor?

A polymerization inhibitor slows or prevents unwanted polymerization during manufacture, storage and transport of reactive monomers. It helps reduce heat generation, viscosity increase, gel formation and equipment fouling. The inhibitor type and concentration must match the monomer, oxygen level, storage temperature and expected holding time.

Can plastic additives be used in recycled polymers?

Yes. Recycled polymers often require restabilization because previous processing and service life have consumed part of the original additive package. Antioxidants, compatibilizers, odour-control products, chain extenders or light stabilizers may be considered. The correct package depends on contamination, degradation level and target application.

Preguntas frecuentes

¿Qué HALS es adecuado para películas agrícolas??

¿Por qué los pigmentos ácidos o los retardantes de llama pueden reducir el rendimiento de HALS??

¿En qué se diferencian los HALS de alto peso molecular de los HALS de bajo peso molecular??

Julio 9, 2026

Cómo obtener disolventes de alta pureza para aplicaciones electrónicas en China

Hogar | Temas |

La fabricación de productos electrónicos utiliza muchos de los mismos disolventes que se encuentran en la química industrial general - IPA, acetona, acetato de etilo, pero normalmente con especificaciones mucho más estrictas. Es posible que un grado de solvente que funcione bien para limpieza general o procesamiento industrial no cumpla con los requisitos de pureza., límites de humedad o residuos requeridos para el procesamiento de obleas, Fabricación de pantallas o ensamblaje de productos electrónicos de precisión..

Por qué los compradores de productos electrónicos exigen especificaciones de disolventes más estrictas

En aplicaciones electrónicas, trazar impurezas, La humedad y las partículas pueden afectar el rendimiento y la confiabilidad del producto de maneras mucho menos indulgentes que en el uso industrial general.. Esta es la razón por la que los compradores en este espacio a menudo necesitan mirar más allá de una lista de productos estándar de grado industrial y confirmar la hoja de especificaciones real antes de asumir que un solvente es adecuado..

Solventes comunes utilizados en electrónica

alcohol isopropílico (API)
Acetona
acetato de etilo
NMP (N-Metil-2-pirrolidona)
DMF (Dimetilformamida)
DMSO (Dimetilsulfóxido)
THF (tetrahidrofurano)

Especificaciones clave para confirmar

Pureza/ensayo (a menudo expresado con múltiples decimales para las calificaciones relacionadas con la electrónica)
Contenido de agua
Acidez/alcalinidad
Color (APHA)
Residuo no volátil
Límites de impurezas de metales/trazas, cuando sea relevante para la aplicación

Vale la pena preguntar directamente a los proveedores si su producto estándar cumple con estos parámetros más estrictos., o si un mayor, Es necesario obtener o organizar de forma especial un grado más especializado..

Control de embalaje y contaminación

Para disolventes de grado electrónico o de alta pureza, El embalaje importa tanto como la química misma.. Los compradores deben preguntar sobre:

Material del contenedor y limpieza. (para evitar introducir contaminación)
Si el producto se llena y sella en condiciones controladas.
Tambor, Opciones de embalaje IBC o especiales disponibles para el tamaño del pedido
Embalaje de muestra para pruebas de calificación antes de realizar un pedido completo

Cómo solicitar una cotización a proveedores chinos

un claro, La primera solicitud de especificación tiende a obtener una respuesta más precisa y útil que el nombre general de un producto.. Generalmente es útil incluir:

La aplicación exacta (limpieza de obleas, fabricación de PCB, procesamiento de visualización, montaje electronico general, etc.)
Especificación de destino o referencia a una hoja de especificaciones existente que coincida
Embalaje requerido y volumen de pedido.
Si necesita una muestra para la calificación antes de realizar un pedido completo

Lista de verificación del comprador

Confirme su especificación requerida real, no solo el nombre general del solvente
Pregunte si el grado estándar del proveedor cumple con la pureza del nivel electrónico., o si se necesita un grado diferente
Solicitar COA, SDS/MSDS y TDS relevantes para el producto y la etapa del pedido
Aclarar las prácticas de embalaje y control de la contaminación.
Discuta la disponibilidad de muestras y las expectativas de tiempo de entrega directamente con el proveedor., en lugar de asumir una línea de tiempo estándar

Cómo puede ayudar SUNCHEM

SUNCHEM ayuda a los compradores a comparar grados de solventes y disponibilidad de documentación entre productores chinos calificados, para productos adecuados y etapas de pedido. Porque la capacidad de especificación varía según el proveedor y el producto., compartir su aplicación exacta y las especificaciones de destino por adelantado generalmente conduce a una conversación de abastecimiento más útil.

Contacto SUNCHEM con su especificación de solvente y aplicación electrónica, y podemos ayudarle a evaluar las opciones de abastecimiento.

Lectura relacionada

Artículo escrito porEquipo editorial de SUNCHEM

Dimensión de comparación	antioxidante 1010	antioxidante 168
Papel químico	Antioxidante primario (tipo fenólico impedido) — dona átomos de hidrógeno para interrumpir la cadena de radicales oxidativos.	Antioxidante secundario (tipo fosfito) — reduce los hidroperóxidos a estables, alcoholes no reactivos.
Mecanismo de función	Eliminación de radicales libres: rompe la reacción en cadena en la etapa de propagación.	Descomposición del hidroperóxido: elimina los intermediarios reactivos antes de que generen nuevos radicales..
Función de protección del polímero	Protege contra la degradación termooxidativa a largo plazo durante la vida útil del polímero..	Protege contra la degradación en la etapa de procesamiento: decoloración y pérdida de propiedades inducidas por el calor y el cizallamiento..
Estabilidad de procesamiento	Aporta protección moderada durante el procesamiento.; La principal fortaleza es la estabilización a largo plazo..	Proporciona una fuerte estabilidad en la fase fundida: retención del color y control de la viscosidad durante la extrusión y el moldeado..
Estabilidad a largo plazo	Proporciona una fuerte estabilidad termooxidativa a largo plazo durante toda la vida útil del producto..	Estabilidad limitada a largo plazo por sí sola; más fuerte cuando se combina con un antioxidante primario.
Aplicaciones típicas	polipropileno, polietileno, plasticos de ingenieria, fibras, películas: estabilización térmica a largo plazo de uso general.	Mismas familias de polímeros base, aplicado específicamente en la composición, extrusión, y etapas de moldeo.
Escenarios de uso comunes	Se utiliza solo cuando las condiciones de procesamiento son moderadas y la prioridad es la resistencia al envejecimiento por calor a largo plazo..	Rara vez usado solo; típicamente combinado con un antioxidante primario como parte de un paquete de estabilización sinérgico.

Nombre del producto	antioxidante 168 (tris(2,4-di-terc-butilfenilo) fosfito)
Marca	SUNNOX® 168
CAS No.	31570-04-4
Categoría química	Antioxidante secundario (Fosfito) / Aditivo plástico
Función principal	Descompone los hidroperóxidos formados durante el procesamiento de polímeros., Proteger la estabilidad del procesamiento y la retención del color.
Aplicaciones	Poliolefinas, plasticos de ingenieria, película & extrusión de fibra, compuesto & lote maestro, polímeros en contacto con alimentos — ver lista completa a continuación

CAS No.	31570-04-4
Fórmula química	C42H63O3P
Sinónimos químicos	Irgáfos® 168; Irganox® 168; sonnox® 1680; PAR de Hostanox 24; Puñalada ADK 2112; alcanox 240; tris(2,4-di-terc-butilfenilo) fosfito — lista completa de sinónimos disponible bajo petición

Punto de fusion	181–184 °C (iluminado.)
Punto de ebullición	594.2 °Gato 760 mmHg
Punto de inflamabilidad	394 °C
Apariencia	Pendiente de confirmación de SUNCHEM — forma comercial típica (p.ej. polvo/gránulo) a confirmar con el grado de origen real
Recomendación de almacenamiento	Pendiente de confirmación de SUNCHEM — Los antioxidantes fosfito son generalmente sensibles a la humedad/hidrólisis.; Datos específicos de temperatura de almacenamiento y vida útil por confirmar.

Tipo de antioxidante	Secundario (fosfito), descomponedor de hidroperóxido
Emparejamiento común	Frecuentemente combinado con un antioxidante fenólico primario. — p.ej. antioxidante 1010 — para una protección sinérgica
Dosificación	Pendiente de confirmación de SUNCHEM — varía según el polímero y el proceso; Póngase en contacto con el equipo técnico de SUNCHEM para obtener orientación específica para su aplicación.

	antioxidante 168 (SUNNOX® 168)	antioxidante 1010 (SUNNOX® 1010)
CAS No.	31570-04-4	6683-19-8
Tipo	Antioxidante secundario (fosfito)	Antioxidante primario (fenólico impedido)
Mecanismo	Descomponedor de hidroperóxido	Eliminador de radicales libres
Rol principal	Estabilidad de procesamiento a alta temperatura	Protección termooxidativa a largo plazo
A menudo combinado con	antioxidante 1010 (ver bien)	antioxidante 168 (ver a la izquierda)

Producto	CAS No.	Rama	Mecanismo	Mejor para
antioxidante 1010	6683-19-8	Primario	carroñero radical	Elección primaria predeterminada; poliolefina ancha / uso de plástico de ingeniería	Vista →
antioxidante 1076	2082-79-3	Primario	carroñero radical	Punto de fusión más bajo (50–52°C) — Manejo/dispersión más fácil en algunos procesos.	Vista →
antioxidante 168	31570-04-4	Secundario	Descomponedor de hidroperóxido	Estabilidad de procesamiento a alta temperatura	Vista →
DSTDP	693-36-7	tioéster	Descomponedor de hidroperóxido	Envejecimiento térmico rentable a largo plazo	Vista →
DLTDP	123-28-4	tioéster	Descomponedor de hidroperóxido	Alternativa a DSTDP, diferente longitud de cadena	Vista →

Nombre del producto	antioxidante 1010 (Pentaeritritol Tetrakis[3-(3,5-Di-terc-butil-4-hidroxifenilo)propionato])
Marca	SUNNOX® 1010
CAS No.	6683-19-8
Categoría química	Antioxidante primario fenólico impedido / Aditivo plástico
Función principal	Previene la degradación oxidativa durante el procesamiento y una vida útil a largo plazo.
Aplicaciones	Poliolefinas, plasticos de ingenieria, CLORURO DE POLIVINILO & goma, polímeros en contacto con alimentos, fibras & película, adhesivos: consulte la lista completa a continuación

Densidad	1.077 gramos/cm³
Punto de ebullición	1005.8°C a 760 mmHg
Punto de fusion	115–118°C (dic.)
Punto de inflamabilidad	247.3°C
Índice de refracción	1.535
Forma	Limpio
pka	11.71 ± 0.40 (Predicho)
Temperatura de almacenamiento	2–8°C

Tipo de antioxidante	Primario (fenólico impedido), eliminador de radicales libres
Emparejamiento común	Frecuentemente combinado con antioxidantes secundarios. (p.ej. antioxidante 168) para una protección sinérgica
Dosificación	Varía según el polímero y el proceso: comuníquese con el equipo técnico de SUNCHEM para obtener orientación específica para su aplicación.

Preguntas frecuentes

Productos y soluciones

CDMA

Productos químicos especiales

Polímeros y Materiales

Farmacéutica e Intermediaria

intermedios farmacéuticos

nutracéuticos

Cómo obtener disolventes de alta pureza para aplicaciones electrónicas en China

Por qué los compradores de productos electrónicos exigen especificaciones de disolventes más estrictas

Solventes comunes utilizados en electrónica

Especificaciones clave para confirmar

Control de embalaje y contaminación

Cómo solicitar una cotización a proveedores chinos

Lista de verificación del comprador

Cómo puede ayudar SUNCHEM

Lectura relacionada

antioxidante 1010 vs antioxidante 168: Diferencias, Roles, y cuándo usarlos juntos

Antioxidantes primarios versus secundarios

antioxidante 1010 vs antioxidante 168 Tabla comparativa

Explicación del mecanismo técnico

antioxidante 1010 — Antioxidante primario

antioxidante 168 — Antioxidante secundario

Por qué antioxidante 1010 y 168 trabajar juntos

Antioxidante primario (1010)

Antioxidante secundario (168)

= Sistema Combinado

Guía de decisión del comprador

Elija antioxidante 1010

Elija antioxidante 168

Elija un sistema combinado

Aplicaciones

polipropileno (PÁGINAS)

Polietileno (educación física)

Plásticos de ingeniería

Procesamiento de polímeros (General)

Por qué fuente SUNCHEM

Productos relacionados

antioxidante 1010

antioxidante 168

Centro de conocimientos sobre antioxidantes

Preguntas frecuentes

¿Cuál es la diferencia entre antioxidante 1010 y antioxidante 168?

¿Debo usar antioxidante? 1010 o antioxidante 168?

Puede antioxidante 1010 y antioxidante 168 ser utilizados juntos?

¿Cómo funcionan juntos los antioxidantes primarios y secundarios??

Necesita ayuda para elegir el sistema antioxidante adecuado?

antioxidante 168 Proveedor en China para la estabilidad del procesamiento de polímeros

Información del producto de un vistazo

Descripción general del producto

QUE ES ANTIOXIDANTE 168?

¿POR QUÉ SE UTILIZA??

¿A QUÉ DESAFÍOS ENFRENTAN LOS COMPRADORES SIN ÉL??

¿CÓMO AYUDA A LOS FABRICANTES DE POLÍMEROS??

Especificaciones técnicas

INFORMACIÓN QUÍMICA

PROPIEDADES

NOTAS DE APLICACIÓN

Aplicaciones & Industrias atendidas

Poliolefinas (educación física / PÁGINAS)

Plásticos de ingeniería (Pensilvania, MASCOTA)

Película & Extrusión de fibra

capitalización & lote maestro

Envases de polímeros en contacto con alimentos

Por qué antioxidante 168 Se utiliza con antioxidante 1010

Comparación / Equivalentes — antioxidante 168 vs antioxidante 1010

¿Por qué utilizar antioxidantes? 168 Desde SUNCHEM

Selección de Productor Calificado

Calidad & Soporte de documentos

Exportar & Coordinación de Logística

Soluciones de abastecimiento flexibles

Gestión de suministros a largo plazo

Proceso de la cadena de suministro de SUNCHEM

Documentos & Calidad

Documentos Públicos

Documentos controlados

embalaje, Cantidad mínima de pedido & Logística

embalaje

Cantidad mínima de pedido & Plazo de entrega

Exportar & Envío