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:
Aug. 01, 2000
Filed:
Oct. 15, 1997
Applicant:
Inventors:
Assignee:
Kuraray Co., Ltd., Kurashiki, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B29D / ; B32B / ; B32B / ;
U.S. Cl.
CPC ...
428 347 ; 428 366 ; 428 367 ; 428500 ; 428515 ;
Abstract
A gas barrier material having an oxygen permeability of not higher than 30 ml.multidot.20 .mu.m/m.sup.2 .multidot.day.multidot.atm measured at 20.degree. C., 100% RH, which comprises a polymer containing not less than 30 mol % of repeating units of formula (1): ##STR1## wherein R.sup.1 is a C.sub.1-2 alkyl group, and R.sup.2 is hydrogen or a C.sub.1-3 alkyl group. This gas barrier material exhibits very good gas barrier properties under conditions of high humidity, and it possesses superior clarity and melt moldability.