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US 4,393,170 AGranted
Polymeric blends
AssigneePhillips Petroleum Company
InventorJohn R. Haws
Life of this patent
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Abstract
A polymeric blend containing (a) copolymer of lactone with conjugated diene or monovinylarene or both conjugated diene and monovinylarene, (b) acrylic ester polymer, and (c) coumarone-indene resin. A polymeric blend as described above also containing (d) conjugated diene monovinylarene teleblock copolymer.
Claims6
A composition of matter that is a blend of polymers comprising:
- (a) a block copolymer of lactone with a comonomer chosen from the group consisting of (1) conjugated diene, (2) monovinylarene, and (3) both conjugated diene and monovinylarene,
- (b) acrylic ester polymer,
- (c) coumarone-indene resin, and
- (d) conjugated diene-monovinylarene teleblock copolymer represented by the general formula (A--B--).sub.n Y wherein A represents a block of polymerized monovinylarene monomer, B represents a block of polymerized conjugated diene units or alternatively a random or random tapered block copolymer of conjugated diene and monovinylarene monomers, Y is the residual unit from a polyfunctional coupling agent or a polyfunctional initiating species and n has a value from 2 to 6.
1 more element
Dependencies are inferred from the claim text.