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. 20, 1998
Filed:
Jan. 16, 1996
Applicant:
Inventor:
Bernice I Feuer, Berkeley Heights, NJ (US);
Assignee:
Hoechst Celanese Corp., Somerville, NJ (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C08B / ; C08B / ; C08B / ;
U.S. Cl.
CPC ...
536107 ; 536110 ;
Abstract
Methods of synthesizing starch acetate containing at least 20% high molecular weight carbohydrates using a MSA catalyst alone, or in combination with a co-catalyst promoting cross-linking, such a phosphoric acid, are described. The MSA is desirably added slowly following beginning of the exothermic reaction of starch, acetic acid and acetic anhydride.