Long-lasting protection
The regenerative HALS mechanism gives long protection; set the loading in your own weathering trial.
SUNLIGHT® 770
HALS 770 Light Stabilizer Supplier
SUNLIGHT® 770 is a low-molecular-weight hindered amine light stabilizer (HALS) for polyolefins, cross-linked polyethylene and olefin copolymers. It is often used together with a UV absorber, an antioxidant or a polymeric HALS.
CAS 52829-07-9 · Monomeric HALS
- Lot COA with every shipment
- Samples for your trials
- Technical support for your trial
Product overview & key benefits
HALS 770 (bis(2,2,6,6-tetramethyl-4-piperidyl) sebacate) traps the free radicals formed by UV exposure and regenerates, so it protects for a long time at low loading. Its low molecular weight (480.7) lets it move to the part surface quickly, which suits thick parts; for thin film and fiber it is often blended with a polymeric HALS such as 944.
Thick parts
Fast migration to the surface suits thick moldings.
Works with other stabilizers
The TDS notes synergy with antioxidants and UV absorbers; it is often combined with 944 for longer life.
Technical specifications
| Parameter | Typical value |
|---|---|
| Product Name | Light Stabilizer 770 |
| Brand | SUNLIGHT® 770 |
| CAS No. | 52829-07-9 |
| Chemical Name | Bis(2,2,6,6-tetramethyl-4-piperidyl) sebacate |
| Molecular Formula | C28H52N2O4 |
| Molecular Weight | 480.7 |
| Appearance | White solid |
| Melting Point | 81.0–86.0 °C |
| Loss on Drying | ≤0.50% |
| Light Transmittance, 425 nm | ≥98.0% |
| Light Transmittance, 500 nm | ≥99.0% |
| Ash | ≤0.10% |
| Purity | ≥99.0% |
| Color | ≤25 APHA |
Standard values from the SUNLIGHT® 770 TDS (V6.2). Every shipment is supplied with a batch COA; the limits that apply to your order are confirmed in the quotation and contract.
Applications by Material
The TDS lists polyolefins, cross-linked polyethylene and olefin copolymers. Pick a group to see what to confirm before your trial.
PP & PE Parts
Listed in the TDS for polyolefin materials, especially thicker parts where a low-molecular-weight HALS reaches the surface quickly.
Check before trial
- Part thickness
- Pigment system
- Target weathering life
Cross-linked Polyethylene
Listed in the TDS for cross-linked polyethylene. Share the cross-linking method and other additives.
Check before trial
- Cross-linking method
- Peroxide or silane system
- Existing antioxidants
Olefin Copolymers
Listed in the TDS for olefin copolymers, usually alongside an antioxidant and a UV absorber.
Check before trial
- Copolymer grade
- Exposure
- Existing stabilizer package
Selection & comparison
Selecting a Light Stabilizer
| Your requirement | What usually works |
|---|---|
| Thick PP and PE parts | Low-MW HALS (770) for fast migration to the surface |
| Thin films, tapes and fibers | Polymeric HALS (944, 622) for low volatility and extraction resistance |
| Agricultural film exposed to pesticides | Polymeric HALS with good resistance to acidic residues; ask about the specific chemicals |
| Automotive and industrial coatings | Liquid HALS (292) with a UV absorber |
| Acid-catalyzed coatings | Non-basic NOR-type HALS (123) |
| Long outdoor life | HALS plus UV absorber, often a blend of a low-MW and a polymeric HALS |
| Replacing an existing grade | Send your current TDS or COA; we match on the parameters you approve |
Light Stabilizer Comparison
Swipe or scroll horizontally to see all columns →
| Product | Type | Best fit |
|---|---|---|
| SUNLIGHT® 770 | Monomeric HALS | Thick polyolefin parts |
| SUNLIGHT® 944 | Polymeric HALS | PP/PE film, tape, fiber |
| SUNLIGHT® 622 | Polymeric HALS | PE film, PP fiber |
| SUNSORB® 326 | Benzotriazole UV absorber | Used with HALS in polyolefins |
| SUNSORB® 531 | Benzophenone UV absorber | Used with HALS in PE and PP |
Combining a HALS with a UV absorber is usual for outdoor use. Set the levels in your own trial.
Packaging & storage
Packaging
25 kg cartons with a plastic inner bag, or packed to customer requirement.
Storage
Keep the container tightly closed in a dry, well-ventilated place. See the SDS for full handling details.
Lead time & terms
Regular grades are usually in stock. For large volumes, lead time is confirmed in the quotation. We quote FOB and CIF.
From first email to approved supply
Define the exposure
Note the climate, the expected service life and your weathering test (xenon or QUV hours, retained elongation, gloss or ΔE). For agricultural film, list the pesticides and fumigants the film will meet.
Pick molecular weight for the part
Low-MW HALS move to the surface quickly and suit thick parts; polymeric HALS resist loss from thin films and fibers. Many outdoor packages blend both.
Check interactions
HALS are basic and can interact with acidic additives, halogenated flame retardants, some pigments and sulfur-containing antioxidants. Send your full formulation so we can flag conflicts before the trial.
Lock in supply terms
Agree physical form (powder or granule), packaging, monthly volume and documents up front. A matching CAS number alone does not qualify a new source; run your weathering test and keep the approved lot COA as the reference.
Tell us your requirement. We match the grade.
Start with your material, part thickness, quantity and destination. Add your current stabilizer package and we will quote against it.
| Information | Example |
|---|---|
| Polymer / Material | PP, PE, ABS, compound, masterbatch |
| Application | Injection molding, extrusion, film, fiber |
| Current additive | Grade or supplier you use today |
| Required specification | Your TDS, COA or key limits |
| Quantity | Trial order / monthly / annual volume |
| Packaging | Standard 25 kg or specific requirement |
| Destination | Country and port |
| Documents needed | COA, SDS, REACH, food-contact statement |
Related products
SUNSORB® 531
Benzophenone UV absorber for polyolefins and PVC, cost-effective and widely used.
View product →Light Stabilizer 770 FAQ
770 or 944?
770 is best for thick parts; 944 (polymeric) is better for thin film and fiber. Many outdoor packages blend both.
How much SUNLIGHT® 770 should I add?
The level depends on your polymer, part thickness, other additives and test conditions, so set it in your own trial. The TDS is available on request.
Can I use 770 in agricultural film?
Low-MW HALS can be lost from thin film; polymeric HALS such as 944 or 622 are usually preferred there.
Can I get a sample before ordering?
Yes. Tell us the polymer, the test you plan to run and the quantity you need. Samples ship with a COA so you can compare the lot against your current material.
What if a COA does not match our agreed specification?
Send us the agreed specification and the COA showing the difference (parameter, unit and test method). We check it with the production batch record before you accept the material, and replace or re-test where the lot is out of specification.
