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:
Feb. 16, 2016
Filed:
Jan. 30, 2012
Toshiaki Aikawa, Osaka, JP;
Tetsuya Ikemoto, Osaka, JP;
Toshiaki Aikawa, Osaka, JP;
Tetsuya Ikemoto, Osaka, JP;
SUMITOMO CHEMICAL COMPANY, LIMITED, Tokyo, JP;
Abstract
A quaternary ammonium salt represented by formula (5) (wherein Rrepresents an alkyl group having 1 to 4 carbon atoms, Rrepresents an alkyl group having 1 to 10 carbon atoms, Rrepresents an alkyl group having 1 to 10 carbon atoms that is optionally substituted with one or more phenyl groups; or a phenyl group that optionally has one or more groups selected from the group consisting of alkyl groups having 1 to 10 carbon atoms and a trifluoromethyl group, Rrepresents an alkyl group having 1 to 4 carbon atoms, Rrepresents an alkyl group having 1 to 10 carbon atoms, C* represents an asymmetric carbon atom, and Xrepresents a halide ion) can be used as a catalyst having good stability under basic conditions.