Reinforced aliphatic polyester molding composition having improved ductility/flow properties
AssigneeGeneral Electric Company
InventorFrank A. Hoefflin
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Abstract
Reinforced, molding compositions having improved ductility and melt flow properties. The present compositions contain a cyclo aliphatic polyester resin preferably comprising the reaction product of a cycloaliphatic C.sub.6 -C.sub.12 diol or chemical equivalent and C.sub.6 -C.sub.12 cycloaliphatic diacid or chemical equivalent, preferably an impact modifying amorphous resin which increases the ductility of the polyester resin but reduces the melt flow properties thereof, a high molecular weight polyetherester polymer which increases the melt flow properties of the polyester polymer without reducing the ductility thereof, and a glass filler to reinforce and stiffen the composition and form a reinforced molding composition.
Claims11
A reinforced, molding composition having improved ductility and melt flow properties comprising a uniform mixture of:
- (a) a cycloaliphatic polyester resin comprising the reaction product of an aliphatic C.sub.2 -C.sub.12 diol or chemical equivalent and a C.sub.6 -C.sub.12 aliphatic diacid or chemical equivalent, said cycloaliphatic polyester resin containing at least about 80% by weight of a cycloaliphatic dicarboxylic acid, or chemical equivalent, and/or of a cycloaliphatic diol or chemical equivalent;
- (b) 5% to about 25% by weight of an impact modifying amorphous resin which increases the ductility of the polyester resin (a) but reduces the melt flow properties thereof;
- (c) 2% to about 50% by weight of a high molecular weight polyetherester polymer which increases the melt flow properties of the impact-modified polyester polymer (a & b) without reducing the ductility thereof, and
- (d) 5% to about 50% by weight of a glass fiber filler to reinforce and stiffen the composition and form a reinforced molding composition.
Dependencies are inferred from the claim text.