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:
Nov. 18, 2014
Filed:
Apr. 20, 2011
Michael Hill, Hamburg, DE;
Sebastian Hoerold, Diedorf, DE;
Werner Krause, Huerth, DE;
Martin Sicken, Cologne, DE;
Michael Hill, Hamburg, DE;
Sebastian Hoerold, Diedorf, DE;
Werner Krause, Huerth, DE;
Martin Sicken, Cologne, DE;
Clariant Finance (BVI) Limited, Tortola, VG;
Abstract
The invention relates to a method for producing mixtures of alkylphosphonous acid and dialkylphosphinic acid salts, characterized in that a) a phosphinic acid source (I) is reacted with olefins (II) in the presence of a catalyst A to obtain a mixture of alkylphosphonous acid (III) and dialkylphosphinic acid (IV) or salts or esters thereof, and b) the thus obtained mixture of alkylphosphonous acid (III) and dialkylphosphinic acid (IV) or the salts or esters thereof is reacted with metal compounds of Mg, Ca, Al, Sb, Sn, Ge, Ti, Fe, Zr, Zn, Ce, Bi, Sr, Mn, Li, Na, K and/or a protonated nitrogen base to obtain the corresponding mixtures of alkylphosphonous acid salt (V) and dialkylphosphinic acid salt (VI) of said metals and/or a nitrogen compound, (V) (VI), wherein Y represents Mg, Ca, AI, Sb, Sn, Ge, Ti, Fe, Zr, Zn, Ce, Bi, Sr, Mn, Li, Na; K and/or a nitrogen compound and n represents ¼, ⅓, ½, 1.