6.
    发明专利
    未知

    公开(公告)号:CH599238A5

    公开(公告)日:1978-05-31

    申请号:CH613176

    申请日:1976-05-17

    Applicant: HOECHST AG

    Abstract: Production of tertiary phosphine oxides of the general formula R1R2R3P(O), in which R1, R2 and R3 each stand for identical or different, substituted or unsubstituted alkyl, aryl or aralkyl groups. The tertiary phosphine oxides are produced by oxidizing at temperatures higher than 200 DEG C one or more quaternary phosphonium halides of the general formula [R1R2R3R4P] X, in which R1 through R3 have the meanings given above, R4 has the same meaning as R1 through R3, and X stands for a halogen atom.

    7.
    发明专利
    未知

    公开(公告)号:ES2102697T3

    公开(公告)日:1997-08-01

    申请号:ES94101267

    申请日:1994-01-28

    Applicant: HOECHST AG

    Abstract: Halogen-free, flame-retardant polymeric compositions contain an intumescent flameproofing system which comprises ammonium polyphosphate and an organophosphorus nitrogen component. The organophosphorus nitrogen component is a phosphoric acid polyester of the formula or of the formula in which R is =CH2, =C2H4 or =C3H6, m is from 1 to 10, and n is from 1 to 6.

    8.
    发明专利
    未知

    公开(公告)号:DE3880602D1

    公开(公告)日:1993-06-03

    申请号:DE3880602

    申请日:1988-09-01

    Applicant: HOECHST AG

    Abstract: Flame-retardant polymer compsn. contains a flame retardant system of a P-N component (I), Al(OH)3 (II) and synergistic organic N cpd(s). (IIIA) and/or polyalcohol(s) (IIIB) and/or their derivs. Pref. (I) is ammonium polyphosphate (IA) in a concn. of 5-45 (wt.)% w.r.t. the polymer, pref. in the form of particles with a core of individual (IA) particles and shell of 0.5-25% water-sol., opt. cured synthetic resin, esp. a polycarbodiimide obtd. from a polyisocyanate with a carbodiimidisation catalyst, a polyurethane obtd. from a polyisocyanate and a poly-OH cpd., a polyisocyanurate obtd. from a polyisocyanate and a trimerisation catalyst, a polyurea obtd. from a polyisocyanate and water, a cured melamine/HCHO resin or a cured epoxide resin. (IIIA) is melamine (derivs.), (iso)cyanuric acid (derivs.) or a condensn. prod. of ethyleneurea and HCHO; and (IIIB) is (di)pentaerythritol (derivs.). The compsn. contains 1-25% (III) and 50-175% (II), whilst the ratio of (IA):(III) is 1-10:1 and the ratio of (II) to (IA)+(III) is 1-15:1. The polymer is a thermosetting material, pref. usnatd. polyester resin and pref. reinforced with glass fibres.

    10.
    发明专利
    未知

    公开(公告)号:DE3860298D1

    公开(公告)日:1990-08-16

    申请号:DE3860298

    申请日:1988-02-26

    Applicant: HOECHST AG

    Abstract: Stabilized pulverulent red phosphorus consisting substantially of particles with a size of at most 2 mm, encapsulated in a thin layer of an oxidation stabilizer consisting of at least one scarcely water-soluble or water-insoluble metal hydroxide and a melamine/formaldehyde-polycondensation product.

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