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:
Aug. 10, 2010
Filed:
Apr. 16, 2007
Applicants:
Yuji Okada, Tokyo, JP;
Kenji Ebara, Tokyo, JP;
Inventors:
Yuji Okada, Tokyo, JP;
Kenji Ebara, Tokyo, JP;
Assignee:
Asahi Kasei Chemicals Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F 2/00 (2006.01); C07C 7/148 (2006.01); C07C 7/173 (2006.01); C08F 212/08 (2006.01);
U.S. Cl.
CPC ...
Abstract
An object of the present invention is to provide highly pure α-methylstyrene by efficiently removing polar substances present in the α-methylstyrene. The present invention discloses a method for purifying α-methylstyrene by reacting polar substances contained in the α-methylstyrene in the presence of a basic substance, and separating a reaction product of the polar substance and the α-methylstyrene.