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. 08, 1991
Filed:
Apr. 12, 1990
Jorg Gitzel, Hattersheim am Main, DE;
Hans-Tobias Macholdt, Darmstadt, DE;
Wolfgang Knaup, Burgkirchen, DE;
Hoechst Aktiengesellschaft, Frankfurt am Main, DE;
Abstract
Phosphonium compounds of formula (I): ##STR1## in which at least one of the radicals R.sub.1 to R.sub.4 is a fluorine-substituted, saturated alkyl radical having 1 to 30 carbon atoms and 3 to 50 fluorine atoms, which can contain further substituents, or at least one of the radicals R.sub.1 to R.sub.4 is a fluorine-substituted aryl radical or an aralkyl radical substituted by fluorine on the aromatic ring, it being possible for the aryl or aralkyl radical to be further substituted on the aromatic ring, and the alkyl bridge between the phosphorus atom and the aromatic ring, in the case of an aralkyl radical, containing 1 to 30 carbon atoms, and at most three of the radicals R.sub.1 to R.sub.4 independently of the others are hydrogen atoms, unsaturated or saturated, substituted or unsubstituted C.sub.1 -C.sub.30 alkyl radicals or aryl or aralkyl radicals which can be substituted on the aromatic ring, and R.sub.5 to R.sub.8 are aryl radicals, aralkyl radicals or halogenoaryl radicals, and their preparation by reacting compounds of formula (II): ##STR2## in which R.sub.1 to R.sub.4 are as defined and X.sup.- is a halogen anion, with a borate salt, in water or mixtures of water and an organic solvent, at about 20.degree. C. to about 90.degree. C.