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Secondary Antioxidants




  Secondary Antioxidants
 Product Name     Product Description
  ALKANOX® 240 phosphite ALKANOX® 240 phosphite is an organo-phosphite antioxidant that exhibits excellent hydrolytic stability.
  NAUGARD® 412S thioester NAUGARD® 412S thioester is a low-volatility, high molecular weight, organic sulfur-containing antioxidant developed for polyolefins and engineering thermoplastics.
  NAUGARD® DLTDP thioester NAUGARD® DLTDP thioester is an FDA sanctioned antioxidant for use in polyolefins and other polymeric systems. 
  NAUGARD® DSTDP thioester NAUGARD® DSTDP thioester is an FDA sanctioned antioxidant for use in polyolefins and other polymeric systems. 
  NAUGARD® DTDTDP thioester NAUGARD® DTDTDP thioester is used as a secondary antioxidant to act synergistically when combined with phenolic antioxidants. It is suitable for use in polystyrene, ABS, and rubbers. 
  ULTRANOX® 626 phosphite ULTRANOX® 626 phosphite is a high performance solid organophosphite antioxidant that contains no more than 1.0% by weight of Triisopropanolamine  
  ULTRANOX® 626A phosphite ULTRANOX® 626A phosphite is a high performance solid organophosphite antioxodant that contains no more than 1.0% by weight of Triisopropanolamine. ULTRANOX® 626A phosphite is a granular version of ULTRANOX® 626 phosphite.
  ULTRANOX® 627AV phosphite ULTRANOX® 627AV phosphite is a high performance solid organophosphite antioxidant that contains no more than 1.0% by weight of Triisopropanolamine. ULTRANOX® 627A phosphite is a free flowing version of ULTRANOX® 626 phosphite with an inorganic neutralizer for improved handling characteristics. 
  WESTON® 398 phosphite WESTON® 398 phosphite is a versatile phosphite stabilizer which is useful in a large number of polymers such as HDPE, LLDPE, SBR, ABS, PVC and others.
  WESTON® 398T phosphite WESTON® 398T phosphite is a versatile phosphite stabilizer which is useful in a large number of polymers such as HDPE, LLDPE, SBR, ABS, PVC and others.  
  WESTON® 399 phosphite WESTON® 399 phosphite is a versatile phosphite stabilizer which is useful in a large number of polymers such as HDPE, LLDPE, SBR, ABS, PVC and others.  
  WESTON® 430 phosphite WESTON® 430 phosphite is a speciality alkyl phosphite. It has a hydroxyl number of 395 mg KOH/gm. It is an effective heat, color and viscosity stabilizer for a variety of polymers including polyester fibers and polyurethanes.
  WESTON® 439 phosphite ester WESTON® 439 phosphite ester is used to improve the color and light stability and clarity of PVC and vinyl chloride copolymers.  
  WESTON® 618F phosphite WESTON® 618F phosphite is a phosphite that is a highly effective color and molecular weight stabilizer for polyolefins, polyesters, elastomers, styrenics, engineering thermoplastics, and adhesive formulations. It also contributes to the thermal and UV stability of these polymers. This product is available in a flake form.
  WESTON® 619F phosphite WESTON® 619F phosphite is a phosphite that is a highly effective color and molecular weight stabilizer for polyolefins, polyesters, elastomers, styrenics, engineering thermoplastics, and adhesive formulations.   
  WESTON® 705 phosphite WESTON® 705 phosphite is a versatile phosphite stabilizer and nonylphenol-free. It is useful in a variety of polymer applications such as HDPE, LLDPE, SBR, NBR, SBC, SBS, ABS, PVC and others. Based on proprietary chemistry, it has been designed to replace TNPP in those instances where a TNPP alternative is sought. New advances in Polyethylene technology combined with the insatiable desire for continuous improvement in productivity and safety requires new and new and higher performing additive stabilization systems. WESTON® 705 antioxidant delivers a more consistent solution at the plant resulting in lowering operating and supply chain costs and a safer work environment. SI Group’s next generation nonylphenol-free, phosphite antioxidant is specifically designed to overcome the shortcomings of conventional solid phosphites. WESTON® 705 antioxidant not only meets all present performance and regulatory requirements but has been designed with the future in mind. For more information on WESTON® 705, please click here
  WESTON® 705T phosphite WESTON® 705 is the first nonylphenol-free liquid phosphite antioxidant to receive broad FDA and global food contact approval and today it is the most tested polymer antioxidant ever put on the market and the only one that has successfully passed these new higher standards. It is also useful in a variety of other polymer applications such as SBR, NBR, SBC, SBS, ABS and PVC.
  WESTON® DHOP phosphite ester WESTON® DHOP phosphite ester is a high molecular weight phosphite which has a relatively high phosphorus content. It has a free hydroxyl number of approximately 20 mg KOH/g. WESTON DHOP phosphite is useful as a secondary stabilizer for PVC resins where regulatory approval for food contact is not required.
  WESTON® DPDP phosphite ester WESTON® DPDP phosphite ester is an alkyl-aryl phosphite which is used as a color and processing stabilizer in polycarbonate, polyurethanes, ABS polymers, and coatings where regulatory approval for food contact is not required. It is also used as a secondary stabilizer in polyvinyl chloride.
  WESTON® DPP phosphite ester WESTON® DPP phosphite ester is a diaryl phosphite which can be used to improve the color of unsaturated polyesters. In polyolefins, WESTON® DPP phosphite ester can be used as a stabilizer in applications where regulatory approval for food contact is not required. It is also used as a secondary stabilizer to improve the light and color stability and to prevent plate-out of polyvinyl chloride. This product has a high phosphorus content and a relatively low molecular weight.
  WESTON® DPTDP phosphite ester WESTON® DPTDP phosphite ester 
  WESTON® EHDP phosphite ester WESTON® EHDP phosphite ester is an alkyl-aryl phosphite which can be used as a color and processing stabilizer in ABS, polycarbonate, polyurethane, coatings, and PET fiber where regulatory approval for food contact is not required. It can be used as a secondary stabilizer to improve color and heat stability in PVC.
  WESTON® PDDP phosphite ester WESTON® PDDP phosphite ester is an alkyl-aryl phosphite which can be used as a color and processing stabilizer in ABS, polycarbonate, polyurethane, coatings, and PET fiber where regulatory approval for food contact is not required. 
  WESTON® PNPG phosphite ester WESTON® PNPG phosphite ester is a specialty alkyl-aryl phosphite with a very high phosphorus content. It is an effective secondary stabilizer for a variety of polymers.
  WESTON® PTP phosphite ester WESTON® PTP phosphite ester is a specialty product useful when a high molecular weight phosphite is needed. It has a free hydroxl number of approximately 275 mg KOH/g. WESTON® PTP phosphite ester is used in foamed polyurethanes to control color development and prevent bun scorching.
  WESTON® TDP phosphite ester WESTON® TDP phosphite ester is a trialkyl phosphite which is useful as a secondary stabilizer in ABS, polyethylene terephthalate, PET fibers, coatings, lubricants, PVC, polycarbonate and polyurethanes.  It can also be used in polyolefins where regulatory approval for food contact is not required.
  WESTON® TLP phosphite ester WESTON® TLP phosphite ester is a trialkyl phosphite which can be used as a lubricant additive to improve antifriction and antiwear characteristics. It also functions as a sulfur deactivator. 
  WESTON® TLTTP phosphite WESTON® TLTTP phosphite is a unique phosphite which contains sulfur. It can be used as an effective heat and thermal stabilizer for a variety of polymers where regulatory approval for food contact is not required.  
  WESTON® TNPP phosphite WESTON® TNPP phosphite is a versatile phosphite stabilizer which is useful in a large number of polymers such as HDPE, LLDPE, SBR, ABS, PVC and others. 
  WESTON® TPP phosphite ester WESTON® TPP phosphite ester is a versatile aryl phosphite which can be used as a stabilizer in many types of polymers.