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:
Jun. 23, 1987
Filed:
Jul. 18, 1985
Applicant:
Inventor:
Erwin Weiss, Hofheim am Taunus, DE;
Assignee:
Hoechst Aktiengesellschaft, Frankfurt am Main, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07F / ;
U.S. Cl.
CPC ...
568 14 ;
Abstract
Tertiary phosphine oxides are prepared by the oxidation of tertiary phosphine sulfides with H.sub.2 O.sub.2 in a solvent composed of at least about 20% by weight, preferably at least about 50% by weight, of optionally halogenated, lower aliphatic carboxylic acids and/or their anhydrides; it is particularly preferred if the solvent is composed only of acetic acid. The reaction products are end products and intermediates in a variety of areas such as, for example, the sectors of plant protection and polymers.