Weston® Liquid Phosphite Antioxidants

Key Applications

polyolefin, SBR, ABS, PVC, polyurethane, polyester fibers​

Product Description

Weston® Liquid Phosphite Antioxidants are high-purity phosphite antioxidants that are effective heat, color and viscosity stabilizers providing additional synergies when used with hindered phenols. 


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namekey propertiesdocumentation
Weston® 398Weston®  398 is a phosphite stabilizer finding application for a wide variety of resin systems such as HDPE, LLDPE, SBR, ABS, PVC.SDS*TDS*
Weston® 399Weston® 399 is a versatile phosphite stabilizer used in a large number of polymers such as HDPE, LLDPE, SBR, ABS, PVC.SDS*TDS
Weston® 705Weston® 705 is an industry pioneering phosphite stabilizer which is free of nonylphenol. It can be used in a variety of polymer systems such as HDPE, LLDPE, SBR, NBR, SBC, SBS, ABS, PVC. Based on proprietary chemistry and technology, it has been developed as a replacement for TNPP wherever a TNPP alternative is sought.SDS*TDS*
Weston® TNPPWeston®  TNPP is a cost-effective phosphite stabilizer that improves color and processing stability during recovery, drying, compounding, processing and end use. Typically used with HDPE, LLDPE, SBR, ABS, PVC.SDS*TDS
Weston® TPPWeston® LPP (Liquid Productivity Platform) antioxidants have been designed as an alternative for conventional powder (solid) antioxidants. Liquid productivity technology enables the creation of customized blends that meet requirements of cost-effective performance and enhanced Responsible Care®.SDS*TDS*
Weston® DPPWeston ® DPP is a diaryl phosphite ester which has a high phosphorus content, relatively low molecular weight and can be used to improve the color of unsaturated polyesters. It can also be used as a stabilizer in polyolefin applications where regulatory food contact approval is not required.  Weston ® DPP also serves as a secondary stabilizer to improve the light/color stability and to prevent plate-out of PVC.SDS*TDS*
Weston® DHOPHigh molecular weight phosphite ester which has relatively high phosphorus content and a free hydroxyl number of approximately 20 mg KOH/g. It is useful as a secondary stabilizer for PVC where regulatory approval for food contact is not required.SDS*TDS*
Weston® EHDPWeston® EHDP is a color and processing stabilizer in ABS, polycarbonate, polyurethane, coatings, and PET fiber not requiring food contact approval. It can be used as a secondary stabilizer for improving color and heat stability in PVC.SDS*TDS*