Modified polyester compositions containing mineral filler

Details Modified polyester compositions containing mineral filler Modified polyester compositions containing mineral filler

1979-02-12

1981-07-28

Seccuro, Carman J.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 37PC, 525 67, C08L 6900, C08L 6702

Patent

active

042809495

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, (b) a modifier therefor comprising a combination of an acrylic or methacrylic monomer grafted polymer of a conjugated diene alone or combined with a vinyl aromatic and an aromatic polycarbonate, and (c) a mineral filler selected from clay, mica and/or talc alone or combined with glass fibers and, optionally, (d) a flame retardant. Modifier (b) and mineral filler (c) provide enhanced resistance to impact fracture, increased strength and improved resistance to heat distortion in articles molded from the compositions.

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