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    POLYPROPYLENE MOLDING COMPOSITION AND PROCESS FOR ITS PREPARATION
    2.
    发明专利
    POLYPROPYLENE MOLDING COMPOSITION AND PROCESS FOR ITS PREPARATION 未知

    公开(公告)号：IN140973B

    公开(公告)日：1977-01-08

    申请号：IN666CA1975

    申请日：1975-04-02

    Applicant: HOECHST AG

    Inventor： STRAMETZ H ,  LEUGERING H ,  RUST K ,  ENGELMANN M

    IPC: C08F2/00 ,  C08L23/00 ,  C08F2/14 ,  C08F297/00 ,  C08F297/08 ,  C08L7/00 ,  C08L21/00 ,  C08L23/06 ,  C08L23/08 ,  C08L23/10 ,  C08L23/12 ,  C08L23/16 ,  C08L101/00 ,  C08F29/02

    Abstract: 1508033 Polyolefin compositions HOECHST AG 7 April 1975 [8 April 1974] 14080/75 Headings C3P and C3M Moulding compositions comprising (1) 70 to 90 weight per cent of crystalline polypropylene, (2) 2 to 10 weight per cent of an ethylene/propylene copolymer and (3) 8 to 25 weight per cent of polyethylene wherein the melt flow index of the composition is less than that of the polypropylene component and greater by a factor of 1À3 to 7À0 than that of polypropylene prepared by means of the same catalyst as the moulding composition and having the same reduced specific viscosity, may be prepared by (a) preparing polypropylene of melt flow index 5 to 80 g./10 mins. by polymerizing propylene at 0À5 to 40 kg/cm. and 40 to 110‹ C. in the presence of a stereo specific catalyst and 0- 1 to 20% by volume, based on the propylene, of hydrogen, (b) introducing ethylene at a propylene partial pressure of less than 0À5 kg./ cm. and 40‹ to 110‹ C. and (c) preparing polyethylene in a third step at a propylene partial pressure of less than 0À001 kg./cm. and a total pressure of 0À5 to 40 kg./cm. and at 40‹ to 110‹ C. in the presence of 1 to 50% by volume of hydrogen. In examples the polymers are prepared by sequential polymerization in the presence of catalysts comprising titanium trichloride and diethyl aluminium chloride.

    6.
    发明专利
    未知

    公开(公告)号：BR6909937D0

    公开(公告)日：1973-01-25

    申请号：BR20993769

    申请日：1969-06-19

    Applicant: HOECHST AG

    Inventor： LEUGERING H ,  SCHAUM H

    IPC: C08L53/00

    Abstract: 1,264,825. Block polymer-polyethylene compositions. FARBWERKE HOECHST A.G. 19 June, 1969 [19 June, 1968], No. 31033/69. Heading C3P. A composition comprises (a) 70 to 99À5% of an ethylene-propylene block copolymer having 1 to 30% ethylene and a melt index i 10 at 190‹ C. of 0À5 to 60 and (b) 0À5 to 30% of a polyethylene having a melt index i 2 at 190‹ C. of 0À4 to 80. The compositions may be obtained by mixing above the softening points of the polymers i.e. 150‹ to 300‹ C.

    7.
    发明专利
    未知

    公开(公告)号：BR8103040A

    公开(公告)日：1982-02-09

    申请号：BR8103040

    申请日：1981-05-15

    Applicant: HOECHST AG

    Inventor： WEINLICH J ,  PLEWAN O ,  LEUGERING H

    IPC: C08L27/06 ,  C08J3/18 ,  C08L51/00 ,  C09D127/06 ,  C08F263/04

    Abstract: A process is described for the preparation of mixtures for processing as plastisols or organosols, wherein at least one known plasticizer, at least one first vinyl chloride copolymer and at least one vinyl chloride homopolymer or a second vinyl chloride copolymer are mixed together, if appropriate with the addition of further known substances. The first copolymer is a specific vinyl chloride graft copolymer, of which 5 to 70% by weight are employed, relative to the total quantity of polymers present in the mixture. It contains 99.5 to 88% by weight of polymerized units of vinyl chloride, 0.1 to 11.9% by weight of polymerized units of vinyl acetate and 0.1 to 2.2% by weight of polymerized units of ethylene. The remaining polymer(s) employed is/are prepared in accordance with customary processes. Mixtures prepared in this manner produce plastisols or organosols which have a low viscosity and good stability on storage and which also enable uniform coatings to be obtained by applying a thin layer.

    POLYPROPYLENE MOULDING COMPOSITION AND PROCESS FOR ITS PREPARATION
    10.
    发明专利
    POLYPROPYLENE MOULDING COMPOSITION AND PROCESS FOR ITS PREPARATION 未知

    公开(公告)号：ZA752172B

    公开(公告)日：1976-04-28

    申请号：ZA752172

    申请日：1975-04-07

    Applicant: HOECHST AG

    Inventor： STRAMETZ H ,  LEUGERING H ,  RUST K ,  ENGELMANN M

    IPC: C08F2/00 ,  C08L23/00 ,  C08F2/14 ,  C08F297/00 ,  C08F297/08 ,  C08L7/00 ,  C08L21/00 ,  C08L23/06 ,  C08L23/08 ,  C08L23/10 ,  C08L23/12 ,  C08L23/16 ,  C08L101/00 ,  C08F

    Abstract: 1508033 Polyolefin compositions HOECHST AG 7 April 1975 [8 April 1974] 14080/75 Headings C3P and C3M Moulding compositions comprising (1) 70 to 90 weight per cent of crystalline polypropylene, (2) 2 to 10 weight per cent of an ethylene/propylene copolymer and (3) 8 to 25 weight per cent of polyethylene wherein the melt flow index of the composition is less than that of the polypropylene component and greater by a factor of 1À3 to 7À0 than that of polypropylene prepared by means of the same catalyst as the moulding composition and having the same reduced specific viscosity, may be prepared by (a) preparing polypropylene of melt flow index 5 to 80 g./10 mins. by polymerizing propylene at 0À5 to 40 kg/cm. and 40 to 110‹ C. in the presence of a stereo specific catalyst and 0- 1 to 20% by volume, based on the propylene, of hydrogen, (b) introducing ethylene at a propylene partial pressure of less than 0À5 kg./ cm. and 40‹ to 110‹ C. and (c) preparing polyethylene in a third step at a propylene partial pressure of less than 0À001 kg./cm. and a total pressure of 0À5 to 40 kg./cm. and at 40‹ to 110‹ C. in the presence of 1 to 50% by volume of hydrogen. In examples the polymers are prepared by sequential polymerization in the presence of catalysts comprising titanium trichloride and diethyl aluminium chloride.

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