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US 4,393,161 AGranted
High impact, high modulus reinforced aromatic carbonate polymeric mixtures
AssigneeGeneral Electric Company
InventorsPetrus C. A. M. Van Abeelen, Hans de Munck
Life of this patent
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Abstract
High impact, high modulus thermoplastic molding compositions comprise (a) an aromatic carbonate polymer; (b) a polystyrene resin; (c) a fibrous reinforcing agent essentially free of any sizing agent; and (d) a small amount of a polysiloxane having a substantial content of Si--H bonds.
Claims7
A high impact strength, high modulus thermoplastic composition comprising an intimate admixture of:
- (a) an aromatic carbonate polymer or copolymer;
- (b) a polystyrene resin, the total weight of (a) plus (b) being from about 35 to about 95 parts of the composition;
- (c) from about 5 to about 65 parts by weight of a pristine fibrous reinforcing agent;
- and
- (d) from about 0.05 to about 4 parts by weight of a hydrogen siloxane comprising units of the formula:
- ##STR3## wherein R is hydrogen, C.sub.1 -C.sub.10 alkyl, phenyl or a mixture thereof, and n plus m is at least about 4.
3 more elements
A high impact strength, high modulus thermoplastic composition consisting essentially of an intimate admixture of:
- (a) an aromatic carbonate polymer or copolymer;
- (b) a polystyrene resin, the total weight of (a) plus (b) being from about 35 to about 95 parts of the composition;
- (c) from about 5 to about 65 parts by weight of a pristine fibrous reinforcing agent;
- and
- (d) from about 0.05 to about 4 parts by weight of a hydrogen siloxane comprising units of the formula:
- ##STR4## wherein R is hydrogen, C.sub.1 -C.sub.10 alkyl, phenyl or a mixture thereof, and n plus m is at least about 4.
3 more elements
Dependencies are inferred from the claim text.