The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 07, 2006
Filed:
Jun. 05, 2002
Kazunori Taguchi, Kawasaki, JP;
Yasuo Tsunogae, Kawasaki, JP;
Hitomi Takeuchi, Kawasaki, JP;
Yasuhiro Wakisaka, Kawasaki, JP;
Kei Sakamoto, Kawasaki, JP;
Kazunori Taguchi, Kawasaki, JP;
Yasuo Tsunogae, Kawasaki, JP;
Hitomi Takeuchi, Kawasaki, JP;
Yasuhiro Wakisaka, Kawasaki, JP;
Kei Sakamoto, Kawasaki, JP;
Zeon Corporation, Tokyo, JP;
Abstract
A ring-opened metathesis copolymer and its hydrogenated product having a desired monomer unit ratio and a high molecular weight and having hydroxyl groups or hydroxycarbonyl groups can be obtained by conducting a ring-opening metathesis copolymerization of a norbornene-type monomer having hydroxyl groups or hydroxycarbonyl groups with an unsubstituted norbornene-type monomer having at least three rings in the presence of a catalyst predominantly comprised of an organic ruthenium compound having coordinated therewith a neutral electron-donating ligand, and, if desired, hydrogenating the resulting copolymer. The thus-obtained ring-opened metathesis copolymer and its hydrogenation product are characterized by having a low water absorption, good adhesion to metal and other materials, good compatibility with a curing agent and other compounds, and high heat resistance, and exhibiting reduced signal retardation and signal noise.