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. 30, 1979
Filed:
Mar. 02, 1977
Eberhard Auer, Erftstadt, DE;
Alexander Ohorodnik, Erftstadt, DE;
Hoechst Aktiengesellschaft, Frankfurt am Main, DE;
Abstract
[2-(HALOGENOFORMYL)-VINYL]-ORGANYL-PHOSPHINIC ACID HALIDES OF THE GENERAL FORMULA ##STR1## in which R.sub.1 stands for an alkyl group having 1 to 8 carbon atoms, an aryl group or a substituted derivative of these groups, R.sub.2 stands for a hydrogen atom, an alkyl group having 1 to 8 carbon atoms, an aryl group or a substituted derivative of these groups, and X stands for a chlorine or bromine atom, are produced. To this end, a 2 halogenoacrylic acid or a substitution product thereof of the general formula ##STR2## in which R.sub.2 and X have the meanings given above, is reacted at 15.degree.-90.degree. C. with an organyldihalogenophosphane of the general formula