Copolymer blend of improved impact resistance
AssigneePhillips Petroleum Company
InventorFay W. Bailey
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Abstract
A vinylarene-olefinically unsaturated nitrile copolymer, such as a styrene-acrylonitrile copolymer, is blended with a resinous conjugated diene-vinylarene copolymer, such as a butadiene-styrene copolymer, to improve the impact resistance of the latter.
Claims13
A composition comprising:
- (a) resinous, non-elastomeric block copolymer of conjugated diene and vinylarene and (b) copolymer of monovinylarene and olefinically unsaturated nitrile having the structure ##STR3## wherein R is a member of the group consisting of hydrogen, an alkyl group having from 1-6 carbon atoms and a halogen;
- and wherein the amount of (b) in said composition ranges up to about 30 weight percent based upon the total weight of (a) and (b).
A method for improving the impact resistance of a resinous, non-elastomeric block copolymer of conjugated diene and vinylarene comprising blending said resinous, non-elastomeric block copolymer with up to 30 weight percent of a copolymer of monovinylarene and olefinically unsaturated nitrile having the structure ##STR4## wherein R is a member of the group consisting of hydrogen, an alkyl group having from 1-6 carbon atoms and a halogen;
- and wherein said weight percent is based upon the total weight of said copolymers.
Dependencies are inferred from the claim text.