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Toughened polyester compositions are obtained by blending from 60% to 90% by weight of a modified star block copolymer with from 10% to 40% by weight of a polybutylene terephthalate polyester. The modified star block copolymers are free-radically grafted with an effective amount of an epoxy containi...

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Bibliographische Detailangaben
1. Verfasser:	MODIC, MICHAEL, JOHN, HOUSTON, TX 77077, US
Format:	Patent
Sprache:	ger
Schlagworte:	CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP
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Beschreibung
Zusammenfassung:	Toughened polyester compositions are obtained by blending from 60% to 90% by weight of a modified star block copolymer with from 10% to 40% by weight of a polybutylene terephthalate polyester. The modified star block copolymers are free-radically grafted with an effective amount of an epoxy containing compound such as glycidal acrylate or glycidal methacrylate to give a ductile composition having a 1/8 inch notched Izod impact strength of at least 10.0 ft-lb/in at -20 degrees C.