IP Library › Granted Patent US 10,858,498
Granted Patent B2
US 10,858,498 · App. 16/061,389 · Granted Dec 8, 2020

Group of pellets of ethylene-vinyl alcohol copolymer resin composition

Inventors: Ayano Nakashima (Osaka, JP); Takamichi Tanabe (Osaka, JP); Nobuaki Sato (Osaka, JP); Eisaku Yokoya (Osaka, JP); Seiichi Honda (Osaka, JP); Kaoru Inoue (Osaka, JP)
Assignee: MITSUBISHI CHEMICAL CORPORATION
C08K5/09B29B9/12C08K5/098C08L29/04B29B9/06B29B9/065
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Quick Facts
Patent No.
US 10,858,498
App. No.
16/061,389
Granted
Dec 8, 2020
Kind
B2
Abstract

An ethylene-vinyl alcohol copolymer resin composition pellet group is provided, which is excellent in long-run processability. The ethylene-vinyl alcohol copolymer resin composition pellet group is a group of pellets of an ethylene-vinyl alcohol copolymer resin composition containing an ethylene-vinyl alcohol copolymer and a divalent metal salt, wherein not greater than 3% of the pellets have a b*-value of not less than 5 after the pellets are heat-treated at 230° C. for 30 minutes.

Claims (5)

1. A group of pellets of an ethylene-vinyl alcohol copolymer resin composition comprising:

an ethylene-vinyl alcohol copolymer; and

a divalent metal salt;

wherein when the pellets are heat-treated at 230° C. for 30 minutes, not greater than 3% of the pellets have a b*-value of not less than 5, and

wherein the divalent metal salt is present in a proportion of 0.0005 to 0.0008 parts by weight on a metal basis based on 100 parts by weight of the ethylene-vinyl alcohol copolymer in the ethylene-vinyl alcohol copolymer resin composition.

Assignments (2)
MERGER Recorded May 2, 2019
From: THE NIPPON SYNTHETIC CHEMICAL INDUSTRY CO., LTD.
To: MITSUBISHI CHEMICAL CORPORATION
Reel/Frame 049110/0285 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jun 12, 2018
From: NAKASHIMA, AYANO; TANABE, TAKAMICHI; SATO, NOBUAKI; YOKOYA, EISAKU; HONDA, SEIICHI; INOUE, KAORU
To: THE NIPPON SYNTHETIC CHEMICAL INDUSTRY CO., LTD.
Reel/Frame 046053/0740 →