US 7,402,631 B2
	Acrylic rubber and cross-linkable acrylic rubber composition
Isao Kubota, Yokohama (Japan); and Nobukazu Kaihatsu, Yokohama (Japan)
Assigned to Zeon Corporation, Tokyo (Japan)
Appl. No. 10/590,732 PCT Filed Feb. 24, 2005, PCT No. PCT/JP2005/002996 § 371(c)(1), (2), (4) Date Aug. 25, 2006, PCT Pub. No. WO2005/082960, PCT Pub. Date Sep. 09, 2005.
Claims priority of application No. 2004-052911 (JP), filed on Feb. 27, 2004.
Prior Publication US 2007/0173621 A1, Jul. 26, 2007
Int. Cl. C08F 8/32 (2006.01)

U.S. Cl. 525—329.2  [526/309; 526/318; 525/379; 525/381; 525/382]

6 Claims

1. An acrylic rubber, comprising an alkoxyalkyl(meth)acrylate monomer unit in an amount of 70.1 to 99.8 wt %, a methacrylonitrile monomer unit in an amount of 0.1 to 9.9 wt % and a butenedionic acid monoester monomer unit in an amount of 0.1 to 20 wt %.