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:
Oct. 02, 1979
Filed:
Jan. 05, 1978
Applicant:
Inventors:
Andrea A DeGuia, North Plainfield, NJ (US);
Robert W Stackman, Morristown, NJ (US);
Anthony B Conciatori, Chatham, NJ (US);
Assignee:
Celanese Corporation, New York, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08B / ;
U.S. Cl.
CPC ...
536114 ; 252 / ;
Abstract
This invention provides an improved process for producing alkyl ethers of polygalactomannan gum by contacting polygalactomannan gum with alkyl halide in the presence of a metal hydroxide catalyst and a quaternary ammonium phase-transfer agent.