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:
Oct. 28, 1980
Filed:
Feb. 02, 1979
Applicant:
Inventors:
Ryuzo Nishiyama, Takatsuki, JP;
Kanichi Fujikawa, Kusatsu, JP;
Yasuhiro Tsujii, Kusatsu, JP;
Itaru Shigehara, Kusatsu, JP;
Assignee:
Ishihara Sangyo Kaisha Limited, Osaka, JP;
Primary Examiner:
Int. Cl.
CPC ...
C07G / ;
U.S. Cl.
CPC ...
570193 ;
Abstract
1-Bromo-3,5-dichlorobenzene is reacted with magnesium in a solvent and acetone is added to react it with the reaction product and a mineral acid is added to hydrolyze the resulting .alpha.-(3,5-dichlorophenyl) isopropoxymagnesium bromide and then, the product is dehydrated to obtain 3,5-dichloro-.alpha.-methylstyrene. 3,5-Dichloro-.alpha.-methylstyrene is useful intermediate for various agricultural chemicals, medicines and dyes and also useful monomer for rubbers, plastics and resins.