WESTON™ 705T is a nonylphenol-free phosphite antioxidant, designed as a drop-in replacement for TNPP with a 20% lower loading rate. This grade is similar to WESTON™ 705 phosphite additive but with improved hydrostability.
SI Group's WESTON™ 705T is an industry-pioneering liquid phosphite stabilizer additive free of nonylphenol. It can be used in various polymer systems, such as HDPE, LLDPE, SBR, NBR, SBC, SBS, ABS, and PVC. This grade is based on proprietary chemistry and technology to replace TNPP in food contact plastics packaging. Weston™ 705T has improved hydrostability when compared to WESTON™ 705.
Form: Liquid, free of particulates
Color: Clear
Phosphorus content: 5.0%
Assay: >98%
Specific gravity @ 25°C: 1.004–1.035
Acid number: <0.5 mg KOH/g
TIPA content: 0.5%
Nonylphenol-free
Drop-in replacement for TNPP, reduces loading by 20% while matching TNPP performance
Superior solubility in PE
Compared to AO168/ALKANOX™ 240:
Tenfold reduction in plate-out
Tenfold reduction in gel formation
90% less additive blooming
Threefold improvement in melt flow retention allows for increased usage of regrind
Threefold improvement in color retention upon exposure to NOx gas
Broad food contact approvals
High loading rate of traditional TNPP and phosphite antioxidants
Low hydrostability of traditional phosphite antioxidants
Regulatory restrictions for the use of TNPP antioxidants in food contact applications
Nonylphenol in liquid phosphite antioxidants
Food packaging
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.
Compounders and recyclers face multiple challenges with the stabilization and processing of recycled plastics. Learn more and explore our solutions
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