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. 30, 1996
Filed:
Jun. 10, 1994
Applicant:
Inventors:
William Bauer, Jr, Huntingdon Valley, PA (US);
Nelson I Quiros, Telford, PA (US);
Rita K Upmacis, North Wales, PA (US);
Assignee:
Rohm and Haas Company, Philadelphia, PA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
560218 ;
Abstract
This invention is a method for removing certain carbonyl containing impurities from .alpha.,.beta.-unsaturated carboxylic acid ester with an aqueous solution of a bisulfite or dithionite salt.