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. 05, 2022
Filed:
Jun. 07, 2019
Applicant:
Mitsubishi Chemical Corporation, Tokyo, JP;
Inventors:
Assignee:
MITSUBISHI CHEMICAL CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08F 210/02 (2006.01); C08F 216/06 (2006.01); C08F 8/16 (2006.01); C08J 3/12 (2006.01); C08L 29/04 (2006.01); B32B 27/28 (2006.01);
U.S. Cl.
CPC ...
C08F 216/06 (2013.01); B32B 27/28 (2013.01); C08F 8/16 (2013.01); C08F 210/02 (2013.01); C08J 3/12 (2013.01); C08L 29/04 (2013.01); C08F 2500/24 (2013.01);
Abstract
Ethylene-vinyl alcohol copolymer pellets comprise an ethylene-vinyl alcohol copolymer and water, and have a water content of not higher than 0.5 wt. %, wherein the ratio (Y/Z) of a lactone ring content (Y) to the sum (Z) of a carboxylic acid content (X) and the lactone ring content (Y) in terminal structures of the ethylene-vinyl alcohol copolymer is not less than 60 mol %. The pellets are excellent in high-temperature thermal decomposition-suppressing effect and thermal stability, and are free from odor emanation and coloration even if being processed at a higher temperature.