Long-term heat aging
Synergy with phenolic antioxidants extends oven-aging life well beyond the phenolic alone.
SUNNOX® DLTDP
DLTDP Thioester Antioxidant Supplier
SUNNOX® DLTDP (dilauryl thiodipropionate) is a thioester secondary antioxidant. Used with a phenolic primary such as 1010 ou 1076, it markedly extends long-term heat aging in polyolefins, ABS and rubber.
CAS 123-28-4 · Thioester · Secondary antioxidant
- Lote COA com cada remessa
- Amostras para seus testes
- Suporte técnico para seu teste
Visão geral do produto & principais benefícios
DLTDP decomposes hydroperoxides into stable products, so it removes the fuel for continued oxidation during long service at elevated temperature. On its own it is a weak antioxidant; combined with a hindered phenol it gives a strong synergy for heat-aging performance. Typical blends run at 1:1 para 1:3 fenólico:DLTDP.
Low melting point
Melts at 38–42 °C and disperses easily in compounding and masterbatch.
Cost-effective boost
Often lets you hold or reduce the phenolic level for the same heat-aging target.
Especificações técnicas
| Parâmetro | Valor típico |
|---|---|
| Nome do produto | DLTDP antioxidante |
| Marca | SUNNOX® DLTDP |
| Nº CAS. | 123-28-4 |
| Nome Químico | Dilauryl 3,3'-thiodipropionate |
| Fórmula Molecular | C30H58O4S |
| Peso molecular | 514.8 |
| Aparência | White crystalline powder or flake |
| Ponto de fusão | 38–42 °C |
| Acid Value | ≤0.05 mg KOH/g |
| Volatile Matter | ≤0.05% |
Typical specification. Every shipment is supplied with a batch COA; the limits that apply to your order are confirmed in the quotation and contract.
Applications by Polymer
Pick an application to see how DLTDP is normally used and what to confirm before your trial.
Poliolefinas
Used with 1010 ou 1076 in PP and PE parts that must pass long oven-aging tests, such as appliance and automotive components.
Verifique antes do teste
- Heat-aging test (temperatura, horas)
- Phenolic antioxidant and its level
- Odor requirements for the part
abdômen & Styrenics
Improves heat-aging of ABS and HIPS together with a phenolic antioxidant.
Verifique antes do teste
- Grade and other additives
- Service temperature
- Color target
Borracha, Adesivos & Lubrificantes
Used in rubber, hot-melts and lubricants as a heat-aging synergist.
Verifique antes do teste
- Base polymer or oil
- Operating temperature
- Existing antioxidant package
Seleção & comparação
Selecting an Antioxidant System
| Sua necessidade | O que geralmente funciona |
|---|---|
| Color and melt-flow stability during extrusion or molding | Phosphite secondary antioxidant (168) with a phenolic primary |
| Long-term heat aging in service | High-MW phenolic primary (1010), often with a thioester (DLTDP / DSTDP) |
| Thin film, fibra, low-melting compounding | Lower-melting phenolic (1076) for easy dispersion |
| Repeated processing / conteúdo reciclado | Raise the phosphite share in the blend and check yellowing after each pass |
| Humid storage or long transit | Hydrolysis-resistant phosphite such as 168; keep bags sealed |
| Food-contact articles | Ask for the grade-specific food-contact statement before trials |
| Replacing an existing grade | Envie seu TDS ou COA atual; we match on the parameters you approve |
Antioxidant Comparison
Swipe or scroll horizontally to see all columns →
| Produto | Tipo | Mol. peso | Ponto de fusão | Main job | Typical starting level* |
|---|---|---|---|---|---|
| SUNNOX® DLTDP | Thioester · secondary | 514.8 | 38–42 °C | Heat-aging synergist | 0.1–0.3% with a phenolic |
| SUNNOX® DSTDP | Thioester · secondary | 683.2 | 63–69 °C | Heat-aging synergist, menor volatilidade | 0.1–0.3% with a phenolic |
| SUNNOX® 1010 | Hindered phenol · primary | 1177.6 | 110–125 °C | Long-term thermal protection | 0.05–0.3% |
| SUNNOX® 1076 | Hindered phenol · primary | 530.9 | 50–55 °C | Long-term protection, easy dispersion | 0.05–0.3% |
| SUNNOX® DTDTP | Thioester · secondary | 542.9 | Líquido | Heat-aging synergist, pourable | 0.1–0.5% with a phenolic |
*Starting points for trials, not fixed recommendations. The right level depends on resin, catalyst residue, processing temperature and service life. Primary and secondary antioxidants do different jobs and are not interchangeable.
Embalagem & armazenar
Embalagem
25 kg net bags or cartons with a PE inner liner. Palletized; private-label packing on request.
Armazenar
Keep sealed in a cool, seco, ventilated place away from heat and direct sun. See the SDS for full handling details.
Tempo de espera & terms
Typically 3–15 business days from order confirmation, depending on quantity. FOB, CIF or DAP to major ports.
Do primeiro e-mail ao fornecimento aprovado
Name the failure you want to prevent
Yellowing or melt-flow change during processing points to the phosphite share; embrittlement or cracking after months in service points to the phenolic and thioester share. Note recycled content and the number of extrusion passes.
Start from a proven blend
Most polyolefin packages start from a phenolic primary plus a phosphite secondary, then adjust. Send your current package and we suggest a starting blend for the trial instead of changing several variables at once.
Compare os números que importam
For powders: ensaio, melting range, volatiles and light transmittance at 425/500 nm (a direct read on color). Ask for the same parameters on our COA that appear on your incoming-inspection sheet.
Bloqueie os termos de fornecimento
Agree packaging, monthly volume, destination port and required documents up front. Um número CAS correspondente por si só não qualifica uma nova fonte; run your trial and keep the approved lot COA as the reference.
Diga-nos sua necessidade. Nós combinamos a nota.
Start with your polymer, quantidade e destino. Add your current grade or specification and we will quote against it.
| Informação | Exemplo |
|---|---|
| Polymer / Material | PP, Educação Física, abdômen, composto, lote mestre |
| Aplicativo | Moldagem por injeção, extrusão, filme, fibra |
| Aditivo atual | Classe ou fornecedor que você usa hoje |
| Especificação necessária | Your TDS, COA or key limits |
| Quantidade | Trial order / monthly / volume anual |
| Embalagem | Standard 25 kg or specific requirement |
| Destino | País e porto |
| Documentos necessários | COA, FDS, ALCANÇAR, food-contact statement |
Produtos relacionados
SUNNOX® DSTDP
Higher-melting thioester synergist with lower volatility for long-term heat aging.
Ver produto →SUNNOX® 1010
High-MW hindered phenolic primary antioxidant for long-term thermal protection with low volatility.
Ver produto →SUNNOX® 1076
Low-melting hindered phenolic primary antioxidant, easy to disperse in film and compounding.
Ver produto →SUNNOX® DTDTP
Liquid thioester synergist for ABS, PP and adhesives where a pourable additive is easier to dose.
Ver produto →Antioxidant DLTDP FAQ
Can DLTDP be used alone?
It is not effective alone. Use it with a hindered phenolic antioxidant; uma 1:1 para 1:3 fenólico:DLTDP ratio is a common starting point.
DLTDP or DSTDP?
Both work the same way. DSTDP has a higher melting point (63–69 °C) and lower volatility; DLTDP (38–42 °C) disperses more easily at low processing temperatures.
Does DLTDP affect odor or color?
Thioesters can add slight odor at high loadings and can interact with HALS in outdoor packages. Tell us the end use and we suggest the right balance.
Posso obter uma amostra antes de fazer o pedido?
Sim. Diga-nos o polímero, o teste que você planeja realizar e a quantidade necessária. As amostras são enviadas com um COA para que você possa comparar o lote com o material atual.
E se um COA não corresponder à especificação acordada?
Envie-nos a especificação acordada e o COA mostrando a diferença (parâmetro, unidade e método de teste). Verificamos com o registro do lote de produção antes de você aceitar o material, e substitua ou teste novamente quando o lote estiver fora das especificações.
