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. 29, 1989
Filed:
Oct. 05, 1988
Applicant:
Inventor:
Mark R Johnson, Grayslake, IL (US);
Assignee:
The Dow Chemical Company, Midland, MI (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ; C07C / ; C07C / ;
U.S. Cl.
CPC ...
570200 ; 570144 ;
Abstract
A process for preparing ring-halogenated .alpha.-methylstyrenes from the corresponding .alpha.-halocumenes is disclosed. The dehydrohalogenation is accomplished using only water and optionally an organic solvent. The process eliminates the need for added base and a phase-transfer catalyst.