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    POLYMERIC PHOSPHAZENES
    9.
    发明专利
    POLYMERIC PHOSPHAZENES 未知

    公开(公告)号：CA1013361A

    公开(公告)日：1977-07-05

    申请号：CA176580

    申请日：1973-07-17

    Applicant: FMC CORP

    Inventor： FRANKO-FILIPASIC BORIVOJ R ,  ORWOLL EDWARD F ,  START JOHN F

    IPC: C08G79/00 ,  C08G79/02 ,  D01F2/08 ,  D06M15/673 ,  C08G33/16

    Abstract: 1390306 Preparing polymeric phosphazenes FMC CORP 16 Aug 1973 [17 Aug 1972] 38713/73 Heading C2P [Also in Division C3] A polymeric phosphazene is obtained by reacting a phosphonitrilic chloride polymer with a metallic alkoxide or an alkanol in the presence of an acid acceptor, the alkyl portion of the alkoxide or alkanol containing 1 to 12 carbon atoms, to produce a chlorine-containing phosphazene ester containing 1 to 15% unreacted chlorine by weight and heating the chloroester at 100‹ to 250‹ C. to form a condensed polymeric phosphazene ester of increased molecular weight. The starting polymer may be a linear or cyclic polymer but is preferably a mixture of linear and cyclic polymers. The condensation step which may be carried out in the presence of a catalyst, e.g. copper, involves elimination of alkyl halide and the final product may contain residual chloride. The products are useful as flame retardants for regenerated cellulose.

    POLYMERIC PHOSPHAZENES
    10.
    发明专利
    POLYMERIC PHOSPHAZENES 未知

    公开(公告)号：CA1002060A

    公开(公告)日：1976-12-21

    申请号：CA163344

    申请日：1973-02-09

    Applicant: FMC CORP

    Inventor： FRANKO-FILIPASIC BORIVOJ R ,  ORWOLL EDWARD F ,  PATEL VITHAL C

    IPC: C08K5/00 ,  C08G79/00 ,  C08G79/02 ,  C08K5/51 ,  D01F1/07 ,  D01F2/08 ,  D01F2/10 ,  C08G

    Abstract: 1425853 Liquid polymeric phosphazene derivatives FMC CORP 9 Feb 1973 [11 Feb 1972] 6411/73 Heading C2P [Also in Division C3] Substantially water-insoluble liquid polymeric phosphazenes are prepared by reacting a phosphonitrilate comprising groups of the formula representing both cyclic and linear oligomers in which n is at least 3 for cyclic oligomers and at least 2 for linear oligomers, at least some of X and Y represent the same or different OR groups where R is substituted or unsubstituted C 1 -C 12 aliphatic, C 4 -C 6 cycloaliphatic, or C 6 -C 10 aromatic groups, or heterocyclic radicals having up to 12 carbon atoms, the remainder, if any, of X and Y being halogen atoms, with a phosphorus halide: POX 1 3 , PX 1 3 or PSX 1 3 , where X 1 is a halogen atom, or with a phosphonitrilic halide cyclic or linear oligomer comprising groups of the structure wherein X 1 is Cl or Br and n is as defined above at 50-200‹ C. In another embodiment, the products are obtained by self-reaction at elevated temperature, e.g. 50-200‹ C., of compounds comprising groups of the Formula I above representing both cyclic and linear oligomers in which n is as defined above and X and Y are as defined above and in which 10 to 90 mol. per cent of the X and Y substituents are halogen whereby there is a concomitant increase in the weight percentage of phosphorus in the polymeric phosphazene product. In each type of process the reaction may be carried out in an inert solvent or diluent, e.g. octane or chlorobenzene. The reaction may also be carried out in the presence of copper metal, e.g. an active copper powder, as catalyst and the extent of reaction can be monitored by measurement of organic chloride evolved or analysis for residual chloride. The products generally comprise phosphazene units randomly linked together by an oxygen bridge connecting phosphorus atoms of neighbouring units. In examples the radical R is n-propyl. The products are useful as flame retardants for regenerated cellulose filaments and filamentary articles.

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