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:
Jan. 07, 1992
Filed:
Oct. 27, 1989
Applicant:
Inventors:
James R Gross, Appleton, WI (US);
Michael P Greuel, Akron, OH (US);
Assignee:
Kimberly-Clark Corporation, Neenah, WI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08B / ; C08B / ; C08B / ;
U.S. Cl.
CPC ...
536111 ; 536124 ;
Abstract
A method for producing a water-swellable, water-insoluble carboxyalkyl starch. The steps of the method involving forming an aqueous dispersion of starch; adding to said aqueous dispersion carboxyalkylating reactants under conditions sufficient to form a water-soluble carboxyalkyl starch having an average degree of substitution between about 0.25 and 1.5; and recovering the carboxyalkyl starch by evaporative drying at a temperature within the range of from about 50.degree. C. to about 150.degree. C.