Poly(biphenyl ether sulfone) resins having improved UV yellowing resistance
AssigneeSolvay Advanced Polymers, L.L.C.
InventorJohn A. Rock
Life of this patent
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Abstract
Poly(biphenyl ether sulfone) resins are improved in resistance to UV yellowing when blended with up to 50 wt % polyetherimide. Flame retardant blends of poly(biphenyl ether sulfone) and polyetherimide are particularly useful in fabricating appearance parts for aircraft interiors.
Claims8
A flame retarded composition comprising poly(biphenyl ether sulfone), a zinc borate flame retardant, a fluorocarbon polymer and titanium dioxide, wherein said composition further comprises from about 5 to about 40 wt. % of a polyetherimide resin having units of the following structure;
- wherein Ar1 and Ar2 are radicals independently selected from the group consisting of p-phenylene, m-phenylene, biphenyl, bisphenol A and bisphenol S, based on combined weight of said poly(biphenyl ether sulfone) and said polyetherimide resin.
An article comprising a blend of poly(biphenyl ether sulfone), a zinc borate flame retardant, a fluorocarbon polymer, titanium dioxide and from about 5 to about 40 wt. % of a polyetherimide comprising units having the following structure:
- based on combined weight of said poly(biphenyl ether sulfone) and said polyetherimide resin.
A method for improving the UV yellowing resistance of poly(biphenyl ether sulfone) comprising the step of blending therewith from about 5 to about 40 wt. % of a polyetherimide comprising units having the following structure:
- based on combined weight of said poly(biphenyl ether sulfone) and said polyetherimide resin.
Dependencies are inferred from the claim text.