Back to results
US 5,310,791 AGranted
Low gloss polycarbonate blends obtained by using hydroxy functionalized graft copolymer
AssigneeGeneral Electric Company
InventorShripathy Vilasagar
Life of this patent
Estimating the term…
Abstract
A thermoplastic blend composition is provided containing an aromatic polycarbonate and a hydroxy functional graft copolymer. The compositions exhibit reduced gloss and are useful as molding resins.
Claims15
A thermoplastic blend composition consisting essentially of:
- (a) an aromatic polycarbonate polymer,
- (b) an hydroxy functional graft copolymer consisting of an hydroxy functional rigid polymeric portion grafted to a diene rubber substrate, wherein said hydroxy functional rigid polymeric portion is an hydroxy functional vinyl-vinyl aromatic-vinyl cyanide polymer.
A thermoplastic blend composition, consisting essentially of:
- (a) an aromatic polycarbonate polymer;
- (b) a hydroxyalkyl (meth)acrylate functionalized graft copolymer consisting of a diene rubber substrate and a hydroxyalkyl (meth)acrylate functionalized graft portion grafted thereto, said hydroxyalkyl (meth)acrylate functionalized graft portion being present in an amount sufficient to reduce the gloss of the blend composition, said hydroxyalkyl (meth)acrylate functionalized graft portion consisting of at least one hydroxy functional vinyl monomer, at least one vinyl aromatic monomer, and at least one vinyl cyanide monomer.
A thermoplastic blend composition consisting essentially of:
- (a) an aromatic polycarbonate polymer present at a level of from 50 to 75 weight percent based on the total weight of the composition;
- (b) a gloss-reducing amount of a functionalized graft copolymer comprising a polybutadiene rubber substrate and a hydroxyethyl methacrylate-styrene-acrylonitrile copolymer portion grafted thereon, said functionalized graft polymer being present at a level of from 5 to 25 weight percent based on the total weight of the copolymer;
- and
- (c) a styrene-acrylonitrile polymer present at a level of from 10 to 35 weight percent based on the total weight of the composition.
1 more element
Dependencies are inferred from the claim text.