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:
Apr. 22, 2014
Filed:
May. 10, 2005
Osamu Nakamura, Koga, JP;
Tomoyoshi Hakamata, Koga, JP;
Akira Nomoto, Koga, JP;
Tohcello Co., Ltd., Tokyo, JP;
Abstract
The gas-barrier film of the present invention basically comprises a polymer of a polyvalent metal salt of an unsaturated carboxylic acid compound which gives an infrared absorption spectrum in which the ratio of the absorbance Aat around 1,700 cmattributable to V C═O of the carboxylic acid group to the absorbance A at around 1,520 cmattributable to V C═O of the carboxylate ion, A/A, is lower than 0.25, and this gas-barrier film and a gas-barrier layered body having the film can be manufactured by applying a solution of a polyvalent metal salt of an unsaturated carboxylic acid compound having a degree of polymerization lower than 20 to at least one side of a substrate layer and then polymerizing the polyvalent metal salt of the unsaturated carboxylic acid compound.