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WESTON™ TPP
WESTON™ TPP is a versatile aryl phosphite ester antioxidant that regulates viscosity, improves color, and prevents scorch in a variety of polymers.
Fulfilled By ChemPoint
- Manufacturer: SI Group
- Product Line: SI Group Phosphite Antioxidants
- Product: WESTON™ Liquid Phosphite Antioxidants
- Industries: Adhesives | Plastics
- Authorized Countries: Canada | Mexico | United States
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Overview
WESTON™ TPP is a phosphite ester antioxidant that can be used in a variety of materials, including adhesives, coatings, styrenics, and polyurethanes, to improve color stability, prevent scorch, and regulate viscosity. It acts as a catalyst adjuvant when used in polyolefins.
Specifications
Appearance: Clear liquid
Specific gravity @ 25°C: 1.180–1.186
Acid number: 0.20 mg KOH/g max
Refractive index @ 25°C: 1.5880–1.5900
Phosphorus content: 10%
Color (APHA, Pt-Co): 50 max
Molecular weight: 310 g/mol
Flash point (closed cup): 146°C
Viscosity @ 38°C: 10.2 cps
Density @ 25°C: 1.18 g/mL
Vapor pressure @ 5 mm Hg: 205°C
Soluble: Most aprotic organic solvents
Insoluble: Water
Primary Chemistry: Triphenyl phosphite
Features & Benefits
Regulates viscosity and improves color stability in polyester
Catalyst adjuvant in polyolefins
Prevents scorch during curing in polyurethanes
Problems Solved
Scorch or color-stability issues in coatings, adhesives, styrenics, or polyurethanes
Viscosity changes or limited control in polyester formulations
Applications
Styrenics
Engineering thermoplastics
Related End Markets
Plastics
Related Functions
Adhesives
SI Group Phosphite Antioxidants Articles
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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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