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:
Mar. 08, 1977
Filed:
Sep. 04, 1974
Shuichi Matsumoto, Yokohama, JA;
Ryuichi Nakamura, Tokyo, JA;
Seiji Fukuhara, Kawasaki, JA;
Kazuo Suzuki, Yokohama, JA;
Koei Komatsu, Tokyo, JA;
Japan Synthetic Rubber Co., Ltd., Tokyo, JA;
Abstract
Novel polymers or copolymers of norbornene-carboxylic acid amides can be obtained by contacting, in the presence or absence of an inert solvent, (I) at least one compound selected from the group consisting of 5-norbornene-2-carboxylic acid amide, 5-norbornene-2,3-dicarboxylic acid diamide and substituted derivatives thereof, or (II) a mixture of the said compound (I) with at least one compound selected from the group consisting of norbornenes having at least one substituent selected from the group consisting of ester groups, nitrile groups, esterified hydroxyl groups, acid imide groups, halogens and acid anhydride groups and cyclic olefins, with a catalyst composed of (a) at least one compound selected from the group consisting of compounds of W, Mo and Re and (b) at least one compound selected from the group consisting of compounds of elements of Groups IA, IIA, IIB, IIIA, IVA and IVB of the Deming Periodic Table, said compounds having at least one element-carbon bond or element-hydrogen bond.