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. 03, 2009
Filed:
Mar. 22, 2005
Applicants:
Katsuhisa Masumoto, Ibaraki, JP;
Makoto Itagaki, Katano, JP;
Inventors:
Katsuhisa Masumoto, Ibaraki, JP;
Makoto Itagaki, Katano, JP;
Assignee:
Sumitomo Chemical Company, Limited, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 67/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention relates to a method for producing 3-methyl-2-butenyl acetate which comprises reacting 3-methyl-2-buten-1-ol with acetic anhydride in the presence of an inorganic base catalyst and a method for producing purified 3-methyl-2-butenyl acetate which comprises subjecting crude 3-methyl-2-butenyl acetate to a step (A) of contacting it with an aqueous solution of an alkali metal hydrogen sulfite, or a step (B) of contacting it with an aqueous solution of a base, or both steps (A) and (B).