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:
Jan. 17, 2012
Filed:
Aug. 30, 2006
Tomoyoshi Hakamata, Ibaraki, JP;
Akira Nomoto, Ibaraki, JP;
Osamu Nakamura, Ibaraki, JP;
Yoshihisa Inoue, Chiba, JP;
Kou Tsurugi, Chiba, JP;
Nobuhiro Tanabe, Chiba, JP;
Yoshihiro Yamamoto, Chiba, JP;
Tomoyoshi Hakamata, Ibaraki, JP;
Akira Nomoto, Ibaraki, JP;
Osamu Nakamura, Ibaraki, JP;
Yoshihisa Inoue, Chiba, JP;
Kou Tsurugi, Chiba, JP;
Nobuhiro Tanabe, Chiba, JP;
Yoshihiro Yamamoto, Chiba, JP;
Tohcello Co., Ltd., Tokyo, JP;
Abstract
Disclosed is an excellent gas barrier laminate whose gas-barrier property has little dependency on temperature and which hardly causes fracture even when the laminate is stretched. A gas barrier film comprising a polymer (A) of an unsaturated carboxylic acid compound monovalent metal salt (a), wherein the polymer (A) contains a modified vinyl alcohol polymer (B); a gas barrier laminate comprising a base layer and the gas barrier film formed on at least one surface of the base layer; and a method for production of a gas barrier laminate comprising the steps of: coating a solution of an unsaturated carboxylic acid compound monovalent metal salt (a) having a polymerization degree less than 20 on at least one surface of a base layer, wherein the solution contains a modified vinyl alcohol polymer (B); performing the polymerization to form a layer of the polymer (A) of the unsaturated carboxylic acid compound monovalent metal salt (a) containing the modified vinyl alcohol polymer (B).