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US 4,906,689 AGranted
Low-gloss aromatic carbonate polymer blend
AssigneeGeneral Electric Company
InventorOmar M. Boutni
Life of this patent
Estimating the term…
Abstract
A low gloss thermoplastic blend is produced by blending an aromatic polycarbonate with a very high rubber ABS made by emulsion polymerization.
Claims10
A low-gloss thermoplastic blend the thermoplastic components of which consist essentially of:
- (a) from about 65 to about 95 percent by weight of an aromatic carbonate polymer;
- and
- (b) from about 5 to about 35 percent by weight of at least one very high rubber emulsion-polymerized ABS (acrylonitrile/butadiene/styrene) said rubber being from about 34 to about 55 weight percent of said ABS.
A low-gloss thermoplastic blend the thermoplastic components of which consist essentially of:
- (a) from about 70 to about 90 percent by weight of an aromatic carbonate polymer;
- and
- (b) from about 10 to about 30 percent by weight of at least one very high rubber emulsion-polymerized ABS polymer, said rubber being from about 34 to about 55 weight percent of said ABS.
A thermoplastic blend having a gloss as measured at 60? by ASTM test method D-1003 of equal or less than 35, the thermoplastic components of which consist essentially of:
- (a) from less than about 90 percent to about 70 percent of an aromatic polycarbonate;
- and
- (b) about 10 percent by weight to about 30 percent by weight of a powdered ABS having about 41 to about 55 percent butadiene rubber content and made by emulsion polymerization.
Dependencies are inferred from the claim text.