WESTON® 398 phosphite by SI Group is phosphite antioxidant stabilizer for HDPE, LLDPE, SBR, ABS and PVC. It improves the color and processing stability during recovery, drying, compounding... view more

WESTON® 439 phosphite ester by SI Group is phosphite antioxidant used to improve the color and light stability & clarity of rigid PVC and rigid vinyl chloride copolymers. It is used for food packaging applications... view more

WESTON® 504 by SI Group is a blend of 80% Weston TNPP phosphite and 20% Ultranox 27. It eliminates the pre-blending of antioxidants. It minimizes the risk of compounding errors and variability... view more

WESTON® 504B by SI Group is a blend of 80% Weston TNPP phosphite and 20% Ultranox 27. It eliminates the pre-blending of antioxidants. WESTON® 504B minimizes the risk of compounding errors and... view more

WESTON® DHOP phosphite ester by SI Group is a high molecular weight phosphite antioxidant. WESTON® DHOP phosphite ester is used as a secondary stabilizer for PVC resins... view more

WESTON® DPDP phosphite ester by SI Group is alkyl-aryl phosphite antioxidant. It is used as a color and processing stabilizer in polycarbonate, polyurethanes and ABS polymers. It is also used as a secondary... view more

WESTON® DPP phosphite ester by SI Group is diaryl phosphite antioxidant. It is used to improve the color of unsaturated polyesters. WESTON® DPP phosphite ester is used as a stabilizer in polyolefins. It is also used as a secondary... view more

WESTON® ODPP by SI Group is diphenyl isooctyl phosphite. It acts as a heat stabilizer. WESTON® ODPP is suitable for rigid PVC, TPU, polyester, ABS and PC... view more

WESTON® THOP by SI Group is a special diphosphite. WESTON® THOP acts as a secondary heat stabilizer in many polymers, including PVC (flexible & rigid) and polyurethane... view more