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    12.
    发明专利
    未知

    公开(公告)号：DE19946519A1

    公开(公告)日：2001-08-16

    申请号：DE19946519

    申请日：1999-09-28

    Applicant: BASF AG

    Inventor： GUENTHERBERG NORBERT ,  CZAUDERNA BERNHARD ,  HOFMANN JUERGEN ,  ITTEMANN PETER ,  KURPS ARMIN

    IPC: B01F7/00 ,  C08K5/00 ,  C09K15/08 ,  C09K15/14 ,  C09K15/20 ,  C08J3/20 ,  C08K5/13 ,  C08K5/36 ,  C08K5/524 ,  B01F5/16

    Abstract: The invention relates to a method for producing stabilizer dispersions for stabilizing plastic dispersions, containing the following: f) a dispersing agent, liquor A; g) at least one compound B, which acts as a tensile; h) optionally, at least one phenolic antioxidant C; i) optionally, at least one co-stabilizer D, containing sulfur or phosphorus; and j) optionally, other auxiliary materials and/or additives. At least one of the components C or D is present in the stabilizer dispersion and the components B, C and D are in powder or liquid form. The components A to D are continuously mixed using a mixer and are homogenized in a dispersing mechanism. The finished stabilizer dispersion is continuously removed from the dispersing mechanism. The invention also relates to the use of a device consisting of a housing in which one or more rotors rotate at high speed in corresponding stators on a motor-driven shaft, for the continuous production of stabilizer dispersions.

    13.
    发明专利
    未知

    公开(公告)号：DE19913661A1

    公开(公告)日：2000-09-28

    申请号：DE19913661

    申请日：1999-03-25

    Applicant: BASF AG

    Inventor： ANDERLIK RAINER ,  MEHLER CHRISTOF ,  GRUTKE STEFAN ,  HOFMANN JUERGEN

    IPC: B29C47/10 ,  B29B7/90 ,  B29B7/88 ,  C08K3/34

    Abstract: The invention relates to a continuous method of incorporating at least one solids powder A into a melt containing at least a thermoplastic polymer B, in an extruder. The polymer B is fed into the extruder at one end either in the form of granules which are then melted in the extruder or in the form of a melt, and the solids powder A is fed into the extruder at the same point and/or downstream of the point at which the polymer B is fed into the extruder. Downstream of the feed-in point(s) of A and B water is injected into the extruder.

    PROCESS FOR PRODUCING THERMOPLASTICS
    16.
    发明专利
    PROCESS FOR PRODUCING THERMOPLASTICS 未知

    公开(公告)号：CA2266420A1

    公开(公告)日：1998-04-02

    申请号：CA2266420

    申请日：1997-09-12

    Applicant: BASF AG

    Inventor： GUENTHERBERG NORBERT ,  MAILAHN ELMAR ,  OHLIG HILMAR ,  HOFMANN JUERGEN ,  CZAUDERNA BERNHARD ,  BUS KLAUS ,  GRABOWSKI SVEN

    IPC: B29B7/48 ,  B29B7/58 ,  B29B13/06 ,  B29C48/40 ,  B29C48/67 ,  B29C48/76 ,  B29C63/00 ,  C08J3/20 ,  C08J3/205 ,  C08J5/18 ,  C08L21/00 ,  C08L51/04 ,  B29C47/40 ,  B29C47/64 ,  B29C47/76

    Abstract: A process is disclosed for producing thermoplastics modified to be impactresistant or polymer blends containing such modified thermoplastics. The thermoplastics or polymer blends contain: (A) 5 to 95 wt % of at least one water-wet elastomer component A which contains up to 60 wt % residual water; (B) 5 to 95 wt % of at least one thermoplastic polymer B; (C) 0 to 95 wt % of at least another polymer C; and (D) 0 to 70 wt % additives D. The elastomer component A is mixed with the thermoplastic polymer B, if available with the other polymer C and if available with the additives D in a screw-machine while mechanically dewatering the elastomer component A. The process is characterised in that components A, B, C and D are supplied to an extruder with at least two screws that rotate in the same or opposite directions and have a diameter Dscrew. Seen in the feeding direction (downstream), the extruder substantially consists of at least one dosing section in which the elastomer component A is supplied to the extruder by a dosing device; at least one squeezing section for dewatering the elastomer component A having at least one pressure element and at least a corresponding dewatering opening located upstream of the (first) pressure element at a distance therefrom equal to at least one screw diameter Dscrew; at least one feeding section in which the thermoplastic polymer B is fed into the extruder as a molten mass; at least one plasticising section fitted with mixing and/or kneading elements; at least one degassing section with at least one degassing hole in which the residual water is removed as steam; and an extraction zone. The water expelled through the dewatering openings is partially or totally present in the liquid phase, and components C and/or are supplied together or separately, either together with components A and/or B or separately from A and B in one or more of the above-mentioned extruder sections.

    17.
    发明专利
    未知

    公开(公告)号：DE59501358D1

    公开(公告)日：1998-03-05

    申请号：DE59501358

    申请日：1995-09-09

    Applicant: BASF AG

    Inventor： MARCZINKE BERND LOTHAR DR ,  SCHWAGER HARALD DR ,  SEILER ERHARD DR ,  HOFMANN JUERGEN

    IPC: C08F255/00 ,  C08K5/3415 ,  C08L23/04 ,  C08L23/10 ,  C08L23/14

    Abstract: Partly crosslinked polyolefin mixt. consists of: (a) a polymer of 25-97 wt.% propylene polymer (IA) contg. 0-15 wt.% copolymerised 2-10C alk-l-ene cpds. (II) and 3-75 wt.% propylene polymer (IB) contg. 15-80 wt.% copolymerised (III); (b) a random ethylene copolymer with 5-20 wt.% copolymerised 3-10C alk-l-ene cpds. and a density of 0.890-0.930 g/cc at room temp.; (c) a homogeneous mixt. of a high mol. polyisobutylene (IV) with an Mn of at least 80,000 and a polyolefin; and (d) a bis-maleimido cpd. of formula (V). In (V): R = 1-20C alkyl, opt. with ether O atom(s) in the chain, 5-7C cycloalkyl or 6-15C aryl, opt. with 1-10C alkyl, 1-6C alkoxy and/or 1-4C dialkylamino substit(s).; or an R -Z-R gp.; R , R = 1-10C alkyl, 5-7C cycloalkyl or 6-10C aryl, opt. with 1-10C alkyl, 1-6C alkoxy and/or 1-4C dialkylamino substit(s).; Z = 1-10C alkyl, 1-4C dialkylamino, -O- or -SO2-. Also claimed are: (i) a method for producing the mixt.; and (ii) films, fibres, mouldings and foam made from the mixt.

    Purification of polyarylene ether
    18.
    发明专利
    Purification of polyarylene ether 未知

    公开(公告)号：DE19545968A1

    公开(公告)日：1997-06-12

    申请号：DE19545968

    申请日：1995-12-11

    Applicant: BASF AG

    Inventor： HEITZ THOMAS DR ,  HOFMANN JUERGEN ,  KOCH JUERGEN DR

    IPC: B29B15/06 ,  C08G61/12 ,  C08G65/46 ,  C08L71/10

    Abstract: A process for the purification of polyarylene ethers (I), comprises: (a) making a melt of (I); (b) adding up to 1.5 wt.% water; and (c) removing the water together with the impurities. Preferably, the amount of water added in stage (b) is up to 1 wt%. Stage (b) is carried out under pressure and stage (c) is carried out under normal or reduced pressure. The process is preferably carried out in an extruder, with a polyarylene ether ketone as the starting material.

    20.
    发明专利
    未知

    公开(公告)号：DE59108444D1

    公开(公告)日：1997-02-13

    申请号：DE59108444

    申请日：1991-09-19

    Applicant: BASF AG

    Inventor： BAUMGARTNER EHRENFRIED DR ,  HOFMANN JUERGEN ,  JUNG RUDOLF H DR ,  MOORS RAINER DR ,  SCHAECH HANSJOERG

    IPC: C08F279/02 ,  C08F2/02 ,  C08F2/04 ,  C08F2/06 ,  C08F4/32 ,  C08F279/00 ,  C08F279/04

    Abstract: A process for the continuous preparation of high-impact polystyrene-acrylonitrile (ABS) by the free radical-initiated polymerisation of a mixture of from 60 to 90% by weight of at least one vinyl aromatic monomer and from 10 to 40% by weight of at least one further ethylenically unsaturated monomer in the presence of from 5 to 30% by weight, based on the sum of the monomers, of polybutadiene having a solution viscosity (5% strength by weight in styrene at 25 DEG C) of from 25 to 95 mPa.s and optionally in a solvent, in at least three series-connected reactors operating essentially with no back-mixing, at reaction temperatures of from 50 to 170 DEG C, phase inversion occurring in one of the reactors, the polymerisation being carried out as far as phase inversion at a temperature of 90 DEG C or below and being initiated by free radicals formed from the decomposition of tert.-butyl peresters whose half life period at 90 DEG C is not more than 20 minutes, the polybutadiene content, based on the total reaction mixture, being at least 10% by weight, and at most 25% of the entire amount of chain-transfer agent (regulator) required being added before phase inversion and the remainder thereafter.

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