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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 9605133 B1

PDFFull Text
Date of Patent:
Mar. 28, 2017

Filed:

Apr. 30, 2014

Polyvinyl alcohol aqueous solution

Applicant:

Sekisui Chemical Co., Ltd., Osaka, JP;

Inventor:

Yasuyuki Ieda, Shiga, JP;

Assignee:

SEKISUI CHEMICAL CO., LTD., Osaka, JP;

Attorney:

Wenderoth, Lind & Ponack, L.L.P.

Primary Examiner:

Michael M Bernshteyn

Int. Cl.
CPC ...
C08K 5/54 (2006.01); B29C 41/12 (2006.01); C08J 7/04 (2006.01); C08J 5/18 (2006.01); C08K 5/01 (2006.01); C08K 5/06 (2006.01); C08K 5/5419 (2006.01); C08K 5/101 (2006.01); C08K 5/103 (2006.01); C08K 5/47 (2006.01);
U.S. Cl.
CPC ...
C08K 5/5419 (2013.01); B29C 41/12 (2013.01); C08J 5/18 (2013.01); C08J 7/047 (2013.01); C08K 5/01 (2013.01); C08K 5/06 (2013.01); C08K 5/101 (2013.01); C08K 5/103 (2013.01); C08K 5/47 (2013.01); C08J 2329/04 (2013.01); C08J 2429/04 (2013.01);
Abstract

The present invention provides a polyvinyl alcohol aqueous solution capable of suppressing contamination by components other than polyvinyl alcohol to form a film that contains few air bubbles and is excellent in adhesion to a base material, and a laminated film formed of the polyvinyl alcohol aqueous solution. The present invention relates to a polyvinyl alcohol aqueous solution including polyvinyl alcohol, a surface tension regulator, and water, the surface tension regulator being at least one selected from the group consisting of a polyether silicone compound, a glycerol compound, a cyclic hydrocarbon compound, a propylene glycol compound, and a fatty acid ester compound, the polyvinyl alcohol aqueous solution containing 500 to 10000 parts by weight of water based on 100 parts by weight of the polyvinyl alcohol and having a surface tension of 45 to 72 mN/m.

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