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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 10703895 B1

PDFFull Text
Date of Patent:
Jul. 07, 2020

Filed:

Dec. 19, 2016

Water-soluble film and method for manufacturing same

Applicant:

Nippon Shokubai Co., Ltd., Osaka-shi, Osaka, JP;

Inventors:

Daisuke Michitaka, Osaka, JP;

Masami Hattori, Osaka, JP;

Hirotaka Mizoguchi, Osaka, JP;

Assignee:

Nippon Shokubai Co., Ltd., Osaka, JP;

Attorney:

Hamre, Schumann, Mueller & Larson, P.C.

Primary Examiner:

Ruiyun Zhang

Int. Cl.
CPC ...
C08L 33/02 (2006.01); C08J 5/18 (2006.01); C08L 29/10 (2006.01); C08L 101/02 (2006.01); C11D 3/37 (2006.01); C08L 101/14 (2006.01); C08F 220/06 (2006.01); B65D 65/46 (2006.01); C08L 29/04 (2006.01); C08L 29/06 (2006.01); C11D 17/04 (2006.01);
U.S. Cl.
CPC ...
C08L 33/02 (2013.01); B65D 65/46 (2013.01); C08F 220/06 (2013.01); C08J 5/18 (2013.01); C08L 29/04 (2013.01); C08L 29/06 (2013.01); C08L 29/10 (2013.01); C08L 101/02 (2013.01); C08L 101/14 (2013.01); C11D 3/3753 (2013.01); C11D 3/3757 (2013.01); C11D 3/3788 (2013.01); C11D 17/042 (2013.01); C08J 2300/14 (2013.01); C08J 2329/04 (2013.01); C08J 2329/06 (2013.01); C08J 2333/02 (2013.01); C08J 2333/14 (2013.01); C08J 2400/14 (2013.01); C08J 2429/04 (2013.01); C08J 2429/06 (2013.01); C08J 2433/02 (2013.01); C08L 2203/16 (2013.01);
Abstract

The present invention provides a water-soluble film having excellent solubility in cold water, high strength, and excellent hard-water resistance. The present invention also provides a method for simply producing such a water-soluble film. One aspect of the present invention relates to a water-soluble film including a polymer containing an anionic group other than a sulfonic acid (salt) group, and a water-soluble resin. The anionic group-containing polymer excludes an acrylic acid homopolymer. Another aspect of the present invention relates to a method for producing a water-soluble film that includes a polymer containing an anionic group other than a sulfonic acid (salt) group, and a water-soluble resin. The method includes mixing a polymer containing an anionic group other than a sulfonic acid (salt) group and a water-soluble resin.

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