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:
Dec. 23, 2014
Filed:
Nov. 11, 2008
Applicants:
Munehisa Okutsu, Wakayama, JP;
Takeshi Ihara, Wakayama, JP;
Inventors:
Munehisa Okutsu, Wakayama, JP;
Takeshi Ihara, Wakayama, JP;
Assignee:
Kao Corporation, Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07H 1/00 (2006.01); C07H 1/06 (2006.01); C08B 11/00 (2006.01); C08B 11/02 (2006.01); C08B 11/12 (2006.01); C08H 8/00 (2010.01); C08B 1/12 (2006.01); C08B 1/06 (2006.01); C08B 1/08 (2006.01);
U.S. Cl.
CPC ...
C08B 11/00 (2013.01); C08H 8/00 (2013.01); C08B 1/12 (2013.01); C08B 11/02 (2013.01); C08B 11/12 (2013.01); C08B 1/06 (2013.01); C08B 1/08 (2013.01);
Abstract
The present invention relates to a process for selectively producing a cellulose ether derivative with a very high reaction efficiency of an organohalide compound. There is provided a process for producing a cellulose ether derivative such as carboxymethyl cellulose and hydroxyethyl cellulose in which a low-crystalline powdery cellulose having a crystallinity of 50% or less is reacted with an organohalide compound such as ethylene chlorohydrin, a monohaloacetic acid and a salt of the monohaloacetic acid in the presence of a base.