Patent ID: 11873375
Assignee: SHPP GLOBAL TECHNOLOGIES B.V.
Field: Macromolecular chemistry, polymers (Chemistry)
Classification: CPC C | IPC C

Claim 0:
1. A reinforced polycarbonate composition comprising
30-60 weight percent of a bisphenol A homopolycarbonate; and
10-40 weight percent of a high heat polycarbonate having a glass transition temperature of 170° C. or higher determined per ASTM D3418 with a 20° C./min heating rate; and
8-16 weight percent of a poly(carbonate-siloxane) and 1-10 weight percent of a phosphorous-containing flame retardant comprising a phosphazene present in amount effective to provide 0.5 to 1.5 weight percent phosphorous,
wherein the phosphazene is a phenoxy cyclotriphosphazene, octaphenoxy cyclotetraphosphazene, decaphenoxy cyclopentaphosphazene, or a combination thereof, or the phosphazene is of formulas, , or a combination thereof, wherein
w1 is 3-10,000,
w2 is 3-25, and
each Rw is independently a C1-12 alkyl, C2-12 alkenyl, C1-12 alkoxy, C6-12 aryl, C6-12 aryloxy, or polyoxy(C1-6 alkylene) group; and
0.01-0.5 weight percent of an anti-drip agent; and
5-30 weight percent of glass fibers; and
optionally, up to 5 weight percent of an additive composition,
wherein each amount is based on the total weight of the reinforced polycarbonate composition, which sums to 100 weight percent; and
wherein a molded sample of the polycarbonate composition has
a heat deflection temperature of greater than 115° C., as measured according to ISO 75 at 0.45 megapascal,
a Vicat B120 softening temperature of at least 130° C. as measured according to ISO 306, and
a flame test rating of V0 as measured according to UL-94 at a thickness of 0.8 millimeter.