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. 17, 2012
Filed:
Nov. 30, 2005
Yusaku Inaba, Ibaraki, JP;
Masayuki Okura, Ibaraki, JP;
Mototaka Kawashima, Tokyo, JP;
Toppan Printing Co., Ltd., Tokyo, JP;
Abstract
An aqueous polymerizable monomer composition including an α,β-unsaturated carboxylic acid monomer and a polyvalent metal ion in an amount sufficient to neutralize 10 to 90% of a carboxyl group of the α,β-unsaturated carboxylic acid monomer in the form of a solution or dispersion in water in an amount of 20 to 85% by weight based on the whole amount of the composition, a gas barrier film including an ionically crosslinked polycarboxylic acid polymer film formed by subjecting a coating film of the aqueous polymerizable monomer composition to a polymerization treatment and having an oxygen transmission rate of at most 50×10cm(STP)/(m·s·MPa) as measured under conditions of a temperature of 30° C. and a high relative humidity of 80%, and a production process of the film.