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. 09, 2001
Filed:
Nov. 24, 1998
Applicant:
Inventors:
Norbert Weferling, Hürth, DE;
Hans-Peter Schmitz, Brühl, DE;
Günter Kolbe, Kerpen, DE;
Assignee:
Clariant GmbH, Frankfurt am Main, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07F 9/30 ;
U.S. Cl.
CPC ...
C07F 9/30 ;
Abstract
The invention relates to a process for preparing dialkylphosphinic acids and/or alkali metal salts thereof by reacting olefins with alkylphosphonous and/or hypophosphorous acid and/or alkali metal salts thereof, which comprises carrying out the reaction in the presence of a free-radical initiator. The invention also relates to the use of the products prepared by the abovementioned process for preparing flame retardants.