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:
Sep. 15, 2015
Filed:
Dec. 19, 2011
Kashiko Kawai, Kanagawa, JP;
Yusuke Obu, Kanagawa, JP;
Tomohiro Miyai, Kanagawa, JP;
Shunya Nangou, Kanagawa, JP;
Nan Zhang, Kanagawa, JP;
Kashiko Kawai, Kanagawa, JP;
Yusuke Obu, Kanagawa, JP;
Tomohiro Miyai, Kanagawa, JP;
Shunya Nangou, Kanagawa, JP;
Nan Zhang, Kanagawa, JP;
TOYO SEIKAN GROUP HOLDINGS, LTD., Tokyo, JP;
Abstract
A gas barrier laminate having an undercoating (A) which comprises a main resin, an isocyanate type curing agent and an alkaline compound of a polyvalent metal; and a barrier layer (B) of a polycarboxylic acid polymer forming an ionic crosslinking due to the polyvalent metal among the carboxyl groups; formed on at least one surface of a plastic base material (P), wherein a region (b) free of the alkaline compound of the polyvalent metal is formed in the undercoating (A) on the side of the barrier layer (B), the content of nitrogen in the region (b) being larger than the content of nitrogen in the undercoating (A) other than the region (b), the gas barrier laminate having excellent gas barrier property, retort resistance, producibility as well as excellent flexibility without developing interlayer peeling even if it is folded and featuring excellent interlayer adhesion.