Patent ID: 6013706
Filing Date: 2000-01-11
Classification: C07F,C08K

Abstract:
A process for the preparation of hydrolysis-stable trivalent phosphorous compounds of the formula IP(OR.sup.1).sub.3 (I)of the formula II ##STR4## or the formula IIIR.sup.3 -[P(OR.sup.2).sub.2 ].sub.n (III)whereinn is 1 or 2R.sup.1 is a phenyl radical, which can be substituted by one or more linear or branched C.sub.1 -C.sub.8 -alkyl radicals or by C.sub.5 -C.sub.8 -cycloalkyl, C.sub.6 -C.sub.10 -aryl or C.sub.7 -C.sub.10 -aralkyl radicals,R.sup.2 is a linear or branched C.sub.8 -C.sub.20 -alkyl radical or a phenyl radical, which can be substituted by one or more linear or branched C.sub.1 -C.sub.8 -alkyl radicals or by C.sub.5 -C.sub.8 -cycloalkyl, C.sub.6 -C.sub.10 -aryl or C.sub.7 -C.sub.10 aralkyl radicals,R.sup.3, if n=1, is a phenyl or benzyl radical, which can carry I to 3 substituents, an .alpha.-methylbenzyl, .alpha.,.alpha.-dimethylbenzyl, or naphthyl radical or a naphthyl radical which carries 1 to 5 substituents, in which the substituents are identical or different and are a linear or branched C.sub.1 -C.sub.8 -alkyl radical, a C.sub.1 -C.sub.8 -alkoxy radical, a C.sub.1 -C.sub.12 -alkylthio radical, a C.sub.1 -C.sub.8 -dialkylamino radical, a C.sub.6-C.sub.10 -aryloxy radical or halogen having an atomic number of 9 to 35 andR.sup.3, if n=2, is a phenylene radical, a biphenylene radical, a naphthylene radical or a diphenylene oxide radical, which are unsubstituted or carry 1 to 4 linear or branched C.sub.1 -C.sub.8 -alkyl radicals,which comprises the steps of:treating the compounds of the formula I, II, or III in a solvent or a suspending agent with 0.005 to 5% by weight of an oxide, a hydroxide, a carbonate, a bicarbonate, or a carboxylate of a metal of groups 1a, 2a, 2d, or 7b of the periodic table of the elements, stirring the solution or suspension, andisolating the phosphorous compound.