FLAME-RETARDANT AGENTS STABLE TO HYDROLYSIS, BASED ON AMMONIUM POLYPHOSPHATE

    公开(公告)号:CA1262500A

    公开(公告)日:1989-10-24

    申请号:CA489466

    申请日:1985-08-27

    Applicant: HOECHST AG

    Abstract: HOE 85/H 025 JK FLAME-RETARDANT AGENTS STABLE TO HYDROLYSIS, BASED ON AMMONIUM POLYPHOSPHATE A flame-retardant agent based on free flowing, pulverulent ammonium polyphosphate of the general formula H(n-m)+2(NH4)mPnO3m+1 in which n stands for an integer with an average value of: about 20 to 800 and the ratio of m/n is about 1, consists substantially of a) about 75 to 99.5 mass % ammonium polyphosphate and b) about 0.5 to 25 mass % of a reaction product of a polyisocyanate and a trimerization catalyst, the resulting polyisocyanurate encapsulating the individual ammonium polyphosphate particles.

    FLAME - RETARDANT AGENTS STABLE TO HYDROLYSIS, BASED ON AMMONIUM POLYPHOSPHATE

    公开(公告)号:CA1258010A

    公开(公告)日:1989-08-01

    申请号:CA489250

    申请日:1985-08-22

    Applicant: HOECHST AG

    Abstract: FLAME-RETARDANT AGENTS STABLE TO HYDROLYSIS, BASED ON AMMONIUM POLYPHOSPHATE A flame-retardant agent based on free flowing, pulverulent ammonium polyphosphate of the general formula H(n-m)+2(NH4)mPn03n+1 in which n stands for an integer with an average value of about 20 to 800 and the ratio of m/n is about 1, consists substantially of a) about 75 to 94.5 mass %, ammonium polyphosphate and b) about 0.5 to 25 mass % of a reaction product of a polyisocyanate and a polyhydroxy compound, the resulting polyurethane encapsulating the individual ammonium polyphosphate particles.

    SELF-EXTINGUISHING POLYOLEFIN COMPOSITION

    公开(公告)号:AU578143B2

    公开(公告)日:1988-10-13

    申请号:AU5433686

    申请日:1986-03-03

    Applicant: HOECHST AG

    Inventor: STAENDEKE HORST

    Abstract: Self-extinguishing polymeric composition based on a polyolefin, especially polypropylene, of improved thermal stability containing an intumescent fire-retardant system comprised of a phosphorus constituent and a carbonaceous nitrogen constituent. The composition contains more particularly, as the phosphorus constituent, a product consisting substantially of (a) 75-99.5 wgt % pulverulent free flowing ammonium polyphosphate of the following general formula H(n-m)+2(NH4)mPnO3n+1 in which n stands for an integer having an average value of from about 20 to 800 and the ratio of m/n is about 1, and (b) about 0.5-25 wgt % of a water-insoluble, optionally cured artificial resin encapsulating the individual ammonium polyphosphate particles.

Patent Agency Ranking