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.:
Date of Patent:
Apr. 02, 2019
Filed:
Sep. 07, 2015
Applicant:
Asahi Kasei Kabushiki Kaisha, Tokyo, JP;
Inventor:
Tetsuji Tokiwa, Tokyo, JP;
Assignee:
Asahi Kasei Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08C 2/02 (2006.01); B29B 13/06 (2006.01); C08F 36/00 (2006.01); C08F 6/10 (2006.01); C08F 8/00 (2006.01); B29B 7/48 (2006.01); C08C 19/22 (2006.01); C08C 19/25 (2006.01); C08J 3/00 (2006.01); B29K 9/00 (2006.01);
U.S. Cl.
CPC ...
C08C 2/02 (2013.01); B29B 7/48 (2013.01); B29B 13/06 (2013.01); C08C 19/22 (2013.01); C08C 19/25 (2013.01); C08F 6/10 (2013.01); C08F 8/00 (2013.01); C08F 36/00 (2013.01); C08J 3/005 (2013.01); B29K 2009/00 (2013.01); C08J 2309/06 (2013.01);
Abstract
The present invention provides a process for producing a conjugated diene polymer, the process including a production step of producing a conjugated diene polymer solution containing a conjugated diene polymer and a solvent, and a devolatilization step of heating the conjugated diene polymer solution while conveying the conjugated diene polymer solution with an apparatus having rotary twin screws, thereby devolatilizing the solvent, in which a motor current value of the screw in the devolatilization step and a motor current value of the screw under no load satisfy a predetermined relational expression.