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- Manufacturer: SI Group
- Product Line: SI Group Phosphite Antioxidants
- Product: WESTON™ Liquid Phosphite Antioxidants
- Industries: Adhesives | Elastomers | Plastics
- Authorized Countries: Canada | Mexico | United States
WESTON™ 705T
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.
Quantity
Documents
Specifications
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%
Primary Chemistry:
Proprietary Phosphite
- Manufacturer: SI Group
- Product Line: SI Group Phosphite Antioxidants
- Product: WESTON™ Liquid Phosphite Antioxidants
- Industries: Adhesives | Elastomers | Plastics
- Authorized Countries: Canada | Mexico | United States
Manufacturer
Product Line
Industries
Authorized Countries
Canada
Mexico
United States
Overview
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.
Specifications
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%
Primary Chemistry:
Proprietary Phosphite
Features & Benefits
- 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
Problems Solved
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
Applications
Food packaging
Related Chemistries
Plastics
Related Functions
Adhesives
Related Processes
SI Group Phosphite Antioxidants Articles
SI Group WESTON™ Phosphite Antioxidants
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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