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:
Nov. 18, 1980
Filed:
Jun. 29, 1979
Applicant:
Inventor:
Chee-Gen Wan, North Brunswick, NJ (US);
Assignee:
Halcon Research and Development Corp., New York, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
C07B / ; C07C / ; C07C / ; C08B / ;
U.S. Cl.
CPC ...
536 69 ; 260546 ; 260549 ; 536 71 ; 562550 ; 562607 ;
Abstract
Cellulose acetate is produced from methanol, carbon monoxide and cellulose in an integrated series of steps wherein acetic anhydride produced in a first step by the carbonylation of methyl acetate is used to acetylate cellulose to produce cellulose acetate and to co-produce acetic acid, the co-produced acetic acid is dehydrated and the dehydrated acetic acid reacted with methanol to produce methyl acetate which is then fed to the first step and carbonylated to produce additional quantities of acetic anhydride.