US 7,592,409 B2
	Styrene acrylonitrile isoprene triblock copolymer
Dane Kenton Parker, Coshocton, Ohio (US); Frank James Feher, Copley, Ohio (US); and Viswanath Mahadevan, Copley, Ohio (US)
Assigned to The Goodyear Tire & Rubber Company, Akron, Ohio (US)
Filed on Jun. 29, 2007, as Appl. No. 11/823,890.
Application 11/823890 is a division of application No. 11/454742, filed on Jun. 16, 2006.
Application 11/454742 is a division of application No. 11/186305.
Application 11/186305 is a division of application No. 10/721718, filed on Nov. 25, 2003, granted, now 6,992,156.
Application 11/186305 is a continuation in part of application No. 11/186305, filed on Jul. 21, 2005, granted, now 7,098,280.
Claims priority of provisional application 60/437542, filed on Dec. 31, 2002.
Prior Publication US 2008/0051543 A1, Feb. 28, 2008
Int. Cl. C08F 291/02 (2006.01); C08F 291/12 (2006.01)

U.S. Cl. 526—347  [526/348.6]

11 Claims

1. A block polymer which is comprised of an A block and a B block, wherein the A block is a polymer block which is comprised of a vinyl aromatic monomer and wherein the B block is a polymer block which is comprised of (a) at least one monomer selected from the group consisting of acrylonitrile and methacrylonitrile and (b) isoprene, wherein the block copolymer has an A-B-A triblock polymer architecture.