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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 10570266 B1

PDFFull Text
Date of Patent:
Feb. 25, 2020

Filed:

May. 22, 2017

Saponified ethylene-vinyl ester copolymer composition pellet, and production method therefor

Applicant:

The Nippon Synthetic Chemical Industry Co., Ltd., Osaka, JP;

Inventor:

Tomonori Yoshida, Osaka, JP;

Assignee:

MITSUBISHI CHEMICAL CORPORATION, Tokyo, JP;

Attorney:

Greenblum & Bernstein, P.L.C.

Primary Examiner:

Arrie L Reuther

Int. Cl.
CPC ...
C08K 3/00 (2018.01); C08K 3/34 (2006.01); C08L 29/04 (2006.01); B29C 48/39 (2019.01); B29C 48/40 (2019.01); B29C 48/76 (2019.01); C08J 3/205 (2006.01); B29B 7/48 (2006.01); B29B 7/84 (2006.01); B29B 7/72 (2006.01); B29B 7/90 (2006.01); B29C 48/285 (2019.01); C08K 7/14 (2006.01); B29B 7/42 (2006.01); C08K 3/26 (2006.01); C08K 7/20 (2006.01); C08K 3/22 (2006.01); B29K 23/00 (2006.01);
U.S. Cl.
CPC ...
C08K 3/346 (2013.01); B29B 7/48 (2013.01); B29B 7/845 (2013.01); B29C 48/39 (2019.02); B29C 48/40 (2019.02); B29C 48/762 (2019.02); C08J 3/2056 (2013.01); C08L 29/04 (2013.01); B29B 7/421 (2013.01); B29B 7/483 (2013.01); B29B 7/726 (2013.01); B29B 7/90 (2013.01); B29C 48/285 (2019.02); B29K 2023/086 (2013.01); C08J 2329/04 (2013.01); C08K 3/22 (2013.01); C08K 3/26 (2013.01); C08K 7/14 (2013.01); C08K 7/20 (2013.01);
Abstract

An EVOH resin composition excellent in inorganic compound dispersibility and a method of producing an EVOH resin composition excellent in productivity and inorganic compound dispersibility are provided. The EVOH resin composition contains an EVOH resin (A) and an inorganic compound (B), and has a crystallinity of not lower than 36%. The EVOH resin composition is produced by: feeding an EVOH resin (A), an inorganic compound (B) and water (C) into a kneading apparatus including a screw-type side feeder (); melt-kneading the resulting EVOH resin mixture while driving the screw-type side feeder (); and expelling water vapor from the screw-type side feeder () to reduce the water content of the EVOH resin mixture to lower than 5 weight % while suppressing leakage of the EVOH resin kneaded body from the screw-type side feeder ().

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