| 摘要 |
Linear polymers of formula -[R2P=N-]-n, wherein R is a C1- 20 alkyl group and n has a value greater than 2, are prepared by heating at 25-300 DEG C. one of the following compounds: [R2P(NH2)2]Cl; [R2P(NH2)=N-P(NH2)R2]Cl and <FORM:1121184/C3/1> n is preferably 10-10,000 and Example 2 describes the preparation of a polymer of formula [(CH3)2PN]n of molecular weight 7640.ALSO:The invention comprises phosphorus compounds of the formulae (I) [R2P(NH2)2]Cl; (II) [R2P(NH2) = N-P(NH2)R2]Cl and <FORM:1121184/C2/1> in which R represents a C1-C20 alkyl group. The compounds of formula (III) may be prepared by reacting a monochlorophosphine R2PCl under anhydrous conditions with a hydrazine or a hydrazine mono- or di-hydrohalide and compounds of formulae (I) and (II) may be prepared by reacting the monochlorophosphine in an inert solvent with ammonia and chloramine, the chloramine being introduced into the reaction zone at the same time as or after the ammonia. The hydrazine hydrochloride which is used as starting material may carry one, two or three alkyl groups on one of the nitrogen atoms. The new compounds are used as polymer intermediates.
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