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:
Jun. 22, 1982
Filed:
Mar. 24, 1980
Applicant:
Inventors:
V M Yasnovsky, Sloatsburg, NY (US);
Donald M MacDonald, Monroe, NY (US);
Assignee:
International Paper Company, New York, NY (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C08B / ;
U.S. Cl.
CPC ...
536 58 ; 536 70 ; 536 71 ;
Abstract
Treatment of dissolving pulp derived from wood with small quantities of C.sub.2 -C.sub.18 carboxylic acids and subsequent storage of the treated pulp, under conditions where little acid evaporation can occur, for periods of about two hours or more results in a product which has more uniform reactivity toward standard activation techniques in subsequent esterification reactions which produce known cellulose esters. At certain concentrations conventional activation techniques may be dispensed with.