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:
Jul. 08, 2025
Filed:
Dec. 25, 2019
Applicant:
Zeon Corporation, Tokyo, JP;
Inventors:
Kentaro Ono, Tokyo, JP;
Sayaka Inoue, Tokyo, JP;
Assignee:
ZEON CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08L 9/04 (2006.01); B29B 17/02 (2006.01); C08J 3/16 (2006.01); C08J 11/06 (2006.01);
U.S. Cl.
CPC ...
C08L 9/04 (2013.01); B29B 17/02 (2013.01); C08J 3/16 (2013.01); C08J 11/06 (2013.01); B29B 2017/0217 (2013.01); B29B 2017/0289 (2013.01); C08J 2309/04 (2013.01); C08L 2207/24 (2013.01);
Abstract
A method of recovering nitrile rubber from water-containing crumbs includes crumb-like nitrile rubber using an extruder in which a screw is disposed inside a barrel so as to be capable of being rotationally driven. The barrel is formed with at least a washing zone. The method includes supplying washing water to the washing zone at a water pressure of 0.2 MPa or higher while mixing the crumb-like nitrile rubber and the supplied washing water in the washing zone, thereby washing the crumb-like nitrile rubber.