Long-term heat aging
Synergy with phenolic antioxidants extends oven-aging life well beyond the phenolic alone.
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
Présentation du produit
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 à 1:3 phénolique:DLTDP.
Typical specification. Every shipment is supplied with a batch COA; the limits that apply to your order are confirmed in the quotation and contract.
Key Benefits
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.
Spécifications techniques
Typical specification. Every shipment is supplied with a batch COA; the limits that apply to your order are confirmed in the quotation and contract.
| Parameter | Typical value |
|---|---|
| Nom du produit | DLTDP antioxydant |
| Marque | SUNNOX® DLTDP |
| Numéro CAS. | 123-28-4 |
| Nom chimique | Dilauryl 3,3'-thiodipropionate |
| Formule moléculaire | C30H58O4S |
| Masse moléculaire | 514.8 |
| Apparence | White crystalline powder or flake |
| Point de fusion | 38–42 °C |
| Acid Value | ≤0.05 mg KOH/g |
| Volatile Matter | ≤0.05% |
Applications by Polymer
Pick an application to see how DLTDP is normally used and what to confirm before your trial.
Polyoléfines
Used with 1010 ou 1076 in PP and PE parts that must pass long oven-aging tests, such as appliance and automotive components.
What to confirm for your application
- Heat-aging test (température, heures)
- Phenolic antioxidant and its level
- Odor requirements for the part
abdos & Styrenics
Improves heat-aging of ABS and HIPS together with a phenolic antioxidant.
What to confirm for your application
- Grade and other additives
- Service temperature
- Color target
Caoutchouc, Adhésifs & Lubrifiants
Used in rubber, hot-melts and lubricants as a heat-aging synergist.
What to confirm for your application
- Base polymer or oil
- Operating temperature
- Existing antioxidant package
Emballage & Storage
Emballage
25 kg net bags or cartons with a PE inner liner. Palletized; private-label packing on request.
Storage
Keep sealed in a cool, sec, ventilated place away from heat and direct sun. See the SDS for full handling details.
Délai de mise en œuvre & terms
Typically 3–15 business days from order confirmation, depending on quantity. GOUSSET, CIF or DAP to major ports.
Technique & Buying Information
Antioxidant DLTDP Buyer Guide
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 the numbers that matter
For powders: essai, 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.
Lock in supply terms
Agree packaging, monthly volume, destination port and required documents up front. A matching CAS number alone does not qualify a new source; run your trial and keep the approved lot COA as the reference.
Request a Quotation for Antioxidant DLTDP
Start with your polymer, quantité et destination. Add your current grade or specification and we will quote against it.
| Information | Example |
|---|---|
| Polymer / Material | PP, PE, abdos, composé, mélange maître |
| Application | Injection molding, extrusion, film, fibre |
| Current additive | Grade or supplier you use today |
| Required specification | Your TDS, COA or key limits |
| Quantity | Trial order / monthly / annual volume |
| Emballage | Standard 25 kg or specific requirement |
| Destination | Country and port |
| Documents needed | COA, FDS, ATTEINDRE, food-contact statement |
Related Antioxidants
SUNNOX® DSTDP
Higher-melting thioester synergist with lower volatility for long-term heat aging.
View product →SUNNOX® 1010
High-MW hindered phenolic primary antioxidant for long-term thermal protection with low volatility.
View product →SUNNOX® 1076
Low-melting hindered phenolic primary antioxidant, easy to disperse in film and compounding.
View product →Sunnox® dtdtp
Liquid thioester synergist for ABS, PP and adhesives where a pourable additive is easier to dose.
View product →Antioxidant DLTDP FAQ
Can DLTDP be used alone?
It is not effective alone. Use it with a hindered phenolic antioxidant; un 1:1 à 1:3 phénolique: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.
Can I get a sample before ordering?
Oui. 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.
Discuss Your Antioxidant DLTDP Requirements
Send your application, specification and quantity to request a quotation or supporting documents.