Modified polyester compositions

Details Modified polyester compositions Modified polyester compositions

1979-01-08

1980-12-16

Ziegler, J.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 457R, 260 457P, 260 4575B, 260 459R, 525439, 525444, 525445, C08K 340, C08L 6700, C08L 6706

Patent

active

042396778

ABSTRACT:
Modified thermoplastic polyester compositions are provided which comprise (a) a poly-(1,4-butylene terephthalate) resin or polyester copolymer and, optionally, a poly(ethylene terephthalate) resin and (b) a modifier therefor comprising a combination of a linear or branched rubbery polyester end blocked copolymer of a vinyl aromatic and a conjugated diene and/or a polyester end blocked homopolymer of a conjugated diene or vinyl aromatic and an aromatic polycarbonate, and optionally (c) filler and/or reinforcing agent and/or (d) a flame retardant. Modifier (b) provides enhanced resistance to impact fracture, increased strength and improved resistance to heat distortion in articles molded from the compositions.

REFERENCES:
patent: 3953394 (1976-04-01), Fox et al.
patent: 3969306 (1976-07-01), Borman et al.
"Styrene-Diene-Lactone Block Copolymers", Hsieh, J. Applied Polymer Sci., vol. 22, 1119-1127, (1978).

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