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WESTON™ 439
WESTON™ 439 is a phosphite ester antioxidant designed to improve the color, clarity, and light stability of PVC and vinyl chloride copolymers.
WESTON™ 439 is a phosphite ester antioxidant that improves the color, light stability, and optical transparency of PVC and vinyl chloride copolymers. WESTON™ 439 offers high performance for PVC when used alongside primary metal stabilizers and epoxy stabilizers.
Specifications
Form: Liquid Color: Clear CAS number: 96152-48-6 Color (Pt-Co): 50 max Acid number: 0.20 mg KOH/g max Refractive index @ 25°C: 1.5040–1.5095 Phosphorus content: 5.4% Specific gravity @ 25°C: 0.965–0.990 Vapor Pressure @ 6 mm Hg: 175°C Flash point (closed cup): 177°C Soluble: Most common aprotic organic solvents Insolubility: Wate
Primary Chemistry: Poly 4,4' isopropylidenediphenol C12-15 alcohol phosphite
Features & Benefits
Approved for food contact when used in PVC Improves optical transparency Soluble in most common aprotic organic solvents Synergizes with primary metal stabilizers and epoxy stabilizers
Problems Solved
Clarity or color stability issues in PVC or vinyl polymers Degradation or staining in PVC when exposed to light or processing temperatures
Applications
Packaging Consumer goods Building and construction Automotive Appliances Windows Decks Flooring Fences
The portfolio of WESTON™ liquid phosphite antioxidants offers excellent synergism, improved color, and processing stability and offers a variety of food contact approvals depending on your plastic applications.
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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Thank you
Thank you for your inquiry and interest in ChemPoint. We will respond to you shortly.
ChemPoint will not under any circumstances release personal user information to individuals or companies. All information collection is solely used to support ChemPoint customers service communications. Read our Privacy Notice.
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