Tetra (lower alkaryl) p-phenylene diphosphate-polycarbonate...

C - Chemistry – Metallurgy – 08 – L

Patent

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400/5607, 400/75

C08L 69/00 (2006.01) C07F 9/12 (2006.01) C08K 5/523 (2006.01)

Patent

CA 2034403

RD0019~24 Abstract of the Disclosure A polycarbonate-di(alkaryl) p-phenylene diphosphate plasticizer matrix has a tensile strength and elastic modulus higher than neat polycarbonate. By blending an impact modifier with the matrix, resin blends having a wide variety of impact and tensile properties are prepared. The matrix can be used for thin wall instrument housings which can be injection molded to close tolerance. The di(alkaryl) p-phenylene diphosphate has the formula Image wherein each Ak1 is independently hydrogen or a methyl radical and each Ak2 is independently a monovalent hydrocarbon radical having from one to four carbon atoms.

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