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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 12110358 B1

PDFFull Text
Date of Patent:
Oct. 08, 2024

Filed:

Nov. 02, 2017

Synthetic polyisoprene latex

Applicant:

Zeon Corporation, Tokyo, JP;

Inventors:

Junji Kodemura, Tokyo, JP;

Shunjin Aihara, Tokyo, JP;

Yoshitaka Satoh, Tokyo, JP;

Assignee:

ZEON CORPORATION, Tokyo, JP;

Attorney:

Oliff PLC

Primary Examiner:

David J Buttner

Assistant Examiner:

Surbhi M Du

Int. Cl.
CPC ...
C08F 36/08 (2006.01); B29C 41/00 (2006.01); B29K 105/00 (2006.01); B32B 7/12 (2006.01); C08C 2/06 (2006.01); C08C 19/00 (2006.01); C08F 4/46 (2006.01); C08F 136/08 (2006.01); C08J 5/02 (2006.01); C08J 5/18 (2006.01); C08L 9/10 (2006.01); C08L 47/00 (2006.01); C09J 5/00 (2006.01); C09J 109/10 (2006.01);
U.S. Cl.
CPC ...
C08F 36/08 (2013.01); B29C 41/003 (2013.01); B32B 7/12 (2013.01); C08C 2/06 (2013.01); C08C 19/00 (2013.01); C08F 4/461 (2013.01); C08F 136/08 (2013.01); C08J 5/02 (2013.01); C08J 5/18 (2013.01); C08L 9/10 (2013.01); C08L 47/00 (2013.01); C09J 5/00 (2013.01); C09J 109/10 (2013.01); B29K 2105/0064 (2013.01); B32B 2553/00 (2013.01); C08J 2309/10 (2013.01); C09J 2409/00 (2013.01);
Abstract

A synthetic polyisoprene latex containing synthetic polyisoprene, wherein the synthetic polyisoprene constituting the synthetic polyisoprene latex includes a low-molecular weight synthetic isoprene chain having a molecular weight of less than 1,000,000 at a content rate of 10 to 70% by weight and a high-molecular weight synthetic isoprene chain having a molecular weight of 1,000,000 or more at a content rate of 30 to 90% by weight. Also, a method for producing the synthetic polyisoprene latex, wherein the synthetic polyisoprene containing the low-molecular weight synthetic isoprene chain and the high-molecular weight synthetic isoprene chain is obtained by polymerizing a monomer containing isoprene in an organic solvent by use of an organic alkali metal catalyst.

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