Patent ID: 6265599
Filing Date: 2001-07-24
Classification: C07F,Y02P

Abstract:
A process for preparing a mixture of amino-containing phosphazenes having the following formula (I):N.sub.n P.sub.n (NH.sub.2).sub.x (OR).sub.2n-x (I)wherein n is an integer and n.gtoreq.3;x is an integer of 1x.ltoreq.2n; andR is phenyl or C.sub.3 -C.sub.6 alkyl, said process comprising the following steps:a) introducing NH.sub.3 into a reactant mixture comprising HOR, mixed phosphazenes of (NPCL.sub.2).sub.n and a tertiary amine to undergo reactions at a temperature of 30-100.degree. C. for a period of time, wherein n is defined as above;b) removing a solid comprising NH.sub.4 Cl precipitate from the resulting reaction mixture from step a) by a solid-liquid separation means; andc) removing volatile compounds from the resulting liquid from step b) by evaporation to obtain a mixed product consisting essentially of amino-containing phosphazenes having the formula (I).