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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.:

US 8969475 B1

PDFFull Text
Expired
Date of Patent:
Mar. 03, 2015

Filed:

Jan. 03, 2013

Method for preparing a modified ethylene-vinyl alcohol copolymer

Applicant:

The Yokohama Rubber Co., Ltd., Tokyo, JP;

Inventor:

Naoyuki Morooka, Hiratsuka, JP;

Assignee:

The Yokohama Rubber Co., Ltd., Tokyo, JP;

Attorney:

Novak Druce Connolly Bove + Quigg LLP

Primary Examiner:

Ling Choi

Assistant Examiner:

Ronald Grinsted

Int. Cl.
CPC ...
C08F 8/02 (2006.01); C08L 29/04 (2006.01); C08L 23/26 (2006.01); C08G 81/02 (2006.01); B32B 27/08 (2006.01); B32B 27/30 (2006.01); B60C 1/00 (2006.01); C08F 8/42 (2006.01); F16L 11/08 (2006.01); F16L 11/04 (2006.01);
U.S. Cl.
CPC ...
C08F 8/02 (2013.01); B32B 27/08 (2013.01); B32B 27/30 (2013.01); B60C 1/0008 (2013.04); C08F 8/42 (2013.01); F16L 11/08 (2013.01); F16L 2011/047 (2013.01); B60C 2005/145 (2013.04);
Abstract

Ethylene-vinyl alcohol copolymers have superior gas barrier properties, but are inferior in bending fatigue resistance. The present invention improves bending fatigue resistance without reducing the gas barrier property and heat resistance. An ethylene-vinyl alcohol copolymer having an ethylene content of 20 to 50 percent by mole is modified by incorporating 0.01 to 1% mol of a structural unit expressed by the following formula (3): wherein, n indicates an integer of 2 to 5, m indicates an integer of 10 to 20, and Rindicates a Cto Caliphatic hydrocarbon group provided that Rmay contain a mercapto group, thioester group, sulfenamide, vinyl group, methacryloxy group, or acryloxy group. The modified ethylene vinyl alcohol copolymer may be used as a gas barrier resin and this gas barrier resin may be shaped or laminated and used in various applications such as in pneumatic tires and hoses.

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Morooka, Naoyuki. (2015). Method for preparing a modified ethylene-vinyl alcohol copolymer (U.S. Patent No. 8969475). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/8969475

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