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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 11034799 B1

PDFFull Text
Date of Patent:
Jun. 15, 2021

Filed:

Feb. 16, 2017

Method for manufacturing polymer latex

Applicant:

Zeon Corporation, Tokyo, JP;

Inventors:

Masatoshi Ishiba, Tokyo, JP;

Shunjin Aihara, Tokyo, JP;

Junji Kodemura, Tokyo, JP;

Assignee:

ZEON CORPORATION, Tokyo, JP;

Attorney:

Oliff PLC

Primary Examiner:

Joseph S Del Sole

Assistant Examiner:

Lawrence D Hohenbrink, Jr

Int. Cl.
CPC ...
C08J 3/07 (2006.01); C08J 5/02 (2006.01); C08C 1/15 (2006.01); C08C 1/10 (2006.01); C08C 2/00 (2006.01); B29C 41/00 (2006.01); B29C 41/14 (2006.01); C09J 109/00 (2006.01); C09J 153/02 (2006.01); C08L 9/10 (2006.01); C08L 53/02 (2006.01); B29K 105/00 (2006.01);
U.S. Cl.
CPC ...
C08J 3/07 (2013.01); B29C 41/003 (2013.01); B29C 41/14 (2013.01); C08C 1/10 (2013.01); C08C 1/15 (2013.01); C08C 2/00 (2013.01); C08J 5/02 (2013.01); C09J 109/00 (2013.01); C09J 153/02 (2013.01); B29K 2105/0064 (2013.01); C08J 2309/00 (2013.01); C08J 2353/02 (2013.01); C08L 9/10 (2013.01); C08L 53/02 (2013.01);
Abstract

A method for producing a polymer latex, including an emulsification step of mixing a polymer solution obtained by dissolution of synthetic polyisoprene and/or a styrene-isoprene-styrene block copolymer in an organic solvent, with an aqueous solution including 0.1 to 30 parts by weight of a rosinate based on 100 parts by weight in total of the synthetic polyisoprene and the styrene-isoprene-styrene block copolymer, and emulsifying the resultant in water to thereby obtain an emulsified liquid, a solvent removal step of removing the organic solvent in the emulsified liquid, and a concentration step of concentrating the emulsified liquid from which the organic solvent is removed, and also adjusting the content rate of the rosinate in the emulsified liquid after concentration, in the range of 0.1 to 3 parts by weight based on 100 parts by weight in total of the synthetic polyisoprene and the styrene-isoprene-styrene block copolymer in the emulsified liquid.

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