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:
May. 20, 2008
Filed:
Sep. 01, 2004
Applicants:
Yuichi Sugano, Niigata, JP;
Takafumi Abe, Chigasaki, JP;
Toshifumi Abe, Tsuchiura, JP;
Inventors:
Assignee:
Taiyo Nippon Sanso Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C 67/20 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method for producing MMA-dwhich includes a step of exchanging D in hydroxyl group of methanol-drepresented by the formula: CDOD with H to prepare the methanol-drepresented by the formula CDOH and simultaneously recovering a deuterium-containing compound, and a step of reacting methanol-dwith sulfuric acid salt of methacrylic acid amide represented by the formula CD=(CD)CO(NH.HSO) to prepare MMA-drepresented by the formula: CD=(CD)COOCD.