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    Fire resistant plastic materials for film for high elongation
    43.
    发明专利
    Fire resistant plastic materials for film for high elongation 未知

    公开(公告)号：DE4444711A1

    公开(公告)日：1996-06-20

    申请号：DE4444711

    申请日：1994-12-15

    Applicant: BASF AG

    Inventor： MARCZINKE BERND LOTHAR DR ,  MUELLER PATRIK DR ,  KOESSLER LUDWIG ,  SCHERR GUENTER DR ,  BROSIUS SIBYLLE DR ,  GUENTHER ERHARD DR ,  HOFMANN JUERGEN

    IPC: C08K5/3492 ,  C08L23/10 ,  C08L51/06 ,  D01F6/46

    Abstract: Plastic materials with a melt flow index 230/2.16 of 0.1-100 g/10 minutes contain: (a1) propylene homopolymer with a melt flow index 230/2.16 of 0.1-100 g/10 minutes, or(a2) statistical copolymer of propylene and 2-10C alkene-1 with a comonomer content of less than 15 wt.%, or (a3) a mixt. of 25-97 wt.% of a copolymer of propylene and 0.1-15 wt.% 2-10C alkene-1 and 3-75 wt.% of another propylene copolymer contg. 15-80 wt.% 2-10C alkene-1 units, or(a4) a mixt. of 25-97 wt.% propylene homopolymer and 3-75 wt.% propylene/2-10C alkene-1 copolymer, with a comonomer content of 15-80 wt.% w.r.t. the second polymer, (b) a propylene or ethylene polymer grafted with 0.1-5 wt.% alpha , beta -unsatd. carboxylic acid or acid deriv., with a melt flow index 230/2.16 of 0.01-400 g/10 minutes, and (c) a nitrogen cpd. of formula (I): R =H, 1-30C alkyl, 2-30C alkyl or alk-1-enyl substd. with O atom(s) and/or amino gps., or a gp. of formula (II):HO-(CHR -CHR )m- (II)R =H, 1-4C alkyl or amino; andm=1-100. Also claimed are: (i) a process for the prodn. of the materials, by reacting components (a)-(c) together at 180-280 deg C and 1-100 bar for a mean residence time of 0.2-10 minutes; and(ii) film, fibres and mouldings made from the materials.

    46.
    发明专利
    未知

    公开(公告)号：DE59204397D1

    公开(公告)日：1996-01-04

    申请号：DE59204397

    申请日：1992-04-29

    Applicant: BASF AG

    Inventor： HUNGENBERG KLAUS-DIETER DR ,  SCHWAGER HARALD DR ,  RUEMPLER KLAUS-DIETER DR ,  MUELLER PATRIK DR

    IPC: C08F2/34 ,  C08F2/38 ,  C08F4/642 ,  C08F4/646 ,  C08F210/06 ,  C08F255/02 ,  C08F297/08

    Abstract: Propylene-ethylene copolymers having a melt flow index of from 2 to 200 g/min, at 230 DEG C and under a weight of 2.16 kg, are obtainable by two-step polymerisation from the gas phase in an agitated fixed bed in the presence of hydrogen as molecular weight regulator by means of a Ziegler-Natta catalyst system comprising a titanium-containing solids component which contains a magnesium compound on finely divided silica or alumina or an aluminosilicate of the empirical formula SiO2.aAl2O3, where a is a value of from 0.001 to 2, and an aluminium component, in which a) in a first polymerisation step, propylene is polymerised at a pressure of from 20 to 40 bar and a temperature of from 60 to 90 DEG C, the ratio between the partial pressures of hydrogen and propylene being set to from 1:100 to 10:100, and subsequently b) in a second polymerisation step, a mixture of propylene and ethylene is polymerised onto the propylene product from the first polymerisation step, at a pressure of from 10 to 30 bar, this pressure being at least 7 bar below the pressure in the first polymerisation step, at a temperature of from 40 to 100 DEG C, and the weight ratio between the monomers reacted in the first polymerisation step and those reacted in the second polymerisation step being set in the range from 1:1 to 20:1. t

    47.
    发明专利
    未知

    公开(公告)号：DE4419845A1

    公开(公告)日：1995-12-14

    申请号：DE4419845

    申请日：1994-06-07

    Applicant: BASF AG

    Inventor： KOELLE PETER DR ,  MUELLER PATRIK DR ,  HEMMERICH RAINER DR

    IPC: C08F4/64 ,  C08F4/642 ,  C08F4/646 ,  C08F10/00

    Abstract: Processing Ziegler-Natta (S-N) catalyst systems contg. (a) a Ti-contg. solid component contg. electron donor(s), in the form of a suspension in inert solvent, and as co-catalyst; (b) an Al cpd.; and (c) opt. other electron donor cpds. comprises removing the solvent from suspension (a) by (1) filtering the suspension and then (2) removing more solvent by applying a pressure difference at not above 100 degrees C. Also claimed are the obtd. catalyst systems.

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