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. 08, 2008
Filed:
Dec. 08, 2003
Haruhisa Masuda, Ibaraki, JP;
Hiromichi Nakata, Ibaraki, JP;
Eiji Nakamura, Ibaraki, JP;
Toshiyuki Zento, Ibaraki, JP;
Isamu Okamoto, Ibaraki, JP;
Motohiro Fukuda, Ibaraki, JP;
Haruhisa Masuda, Ibaraki, JP;
Hiromichi Nakata, Ibaraki, JP;
Eiji Nakamura, Ibaraki, JP;
Toshiyuki Zento, Ibaraki, JP;
Isamu Okamoto, Ibaraki, JP;
Motohiro Fukuda, Ibaraki, JP;
Kuraray Co., Ltd, Kurashiki-shi, JP;
Abstract
A thermoplastic polymer composition having good flexibility and excellent barrier properties with respect to gases and organic liquids, which can be adhesively bonded to a polyolefin resin, this composition comprising an ethylene-vinyl alcohol copolymer (A), a polymer mixture (B) composed of a block copolymer (I) mainly comprising a vinyl aromatic polymer block and a conjugated diene polymer block which may be hydrogenated, and a rubber softener (II), and a polyolefin resin (C), wherein at least part of the block copolymer (I) is modified at a modification ratio of 0.05 wt. % or higher so as to have a functional group capable of reacting with the ethylene-vinyl alcohol copolymer (A), wherein the ISO type A hardness of the thermoplastic polymer composition is not less than 30 and not higher than 90, and the oxygen permeation coefficient is 20,000 mL·20 μm/m·day·atm or less.