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WESTON™ PDDP
WESTON™ is an alkyl-aryl phosphite ester antioxidant that provides color and processing stability in polymers that do not require food contact approvals. It is similar to WESTON™ DPDP but with a higher molecular weight and lower phosphorus content.
WESTON™ PDDP is an alkyl-aryl phosphite ester antioxidant that provides color and processing stability in polycarbonate, polyurethanes, ABS polymers, PET fibers, and coatings. It also functions as a secondary antioxidant in PVC.
Specifications
Appearance: Clear liquid Specific gravity @ 25°C: 0.938–0.947 Acid number: 0.05 mg KOH/g Refractive index @ 25°C: 1.4780–1.4810 Phosphorus content: 7.1% Color (APHA, Pt-Co): 50 max Molecular weight: 438 g/mol Flash point (closed cup): 182°C Viscosity @ 38°C: 12.0 cps Density @ 25°C: 0.94 g/mL Vapor pressure @ 5 mm Hg: 190°C Soluble: Most common aprotic organic solvents Insoluble: Water
Primary Chemistry: Phenyl diisodecyl phosphite
Features & Benefits
Functions as a secondary antioxidant for color and heat stability in PVC
Problems Solved
Low phosphorus content or molecular weight in phosphite ester antioxidants or stabilizers Heat or color stability issues in non-food PVC polymers or applications
The portfolio of WESTON™ liquid phosphite antioxidants offers excellent synergism, improved color, and processing stability and offers a variety of food contact approvals depending on your plastic applications.
The SI Group portfolio of WESTON™ phosphite antioxidants protects plastics and elastomers from peroxide decomposers and offers excellent synergism with primary antioxidants, such as hindered phenols.
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Thank you
Thank you for your inquiry and interest in ChemPoint. We will respond to you shortly.
ChemPoint will not under any circumstances release personal user information to individuals or companies. All information collection is solely used to support ChemPoint customers service communications. Read our Privacy Notice.
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