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    55.
    发明专利
    未知

    公开(公告)号：DE59706634D1

    公开(公告)日：2002-04-18

    申请号：DE59706634

    申请日：1997-12-23

    Applicant: BASF AG

    Inventor： GUENTHERBERG NORBERT ,  HOFMANN JUERGEN

    IPC: B01F25/64 ,  C08F6/22 ,  C08F265/04 ,  C08F279/02 ,  B01F5/16

    Abstract: A process for the continuous coagulation of aqueous dispersions of graft rubbers suitable for toughening thermoplastics is described. In the process, dispersions are transported through an apparatus having at least one shear element with a slotted stator and a rotating of the rotor within the stator, so that said dispersions are passed radially from the inside to the outside as a result of the rotation of the rotor in the shear element and, during or after passage through the slots of the rotor and stator, are subjected to such strong shearing that they coagulate, resulting in graft rubber coagulums which can be readily worked up even at a solids content of more than 50% by weight of elastomers.

    56.
    发明专利
    未知

    公开(公告)号：DE10050023A1

    公开(公告)日：2002-04-11

    申请号：DE10050023

    申请日：2000-10-06

    Applicant: BASF AG

    Inventor： GUENTHERBERG NORBERT ,  HOFMANN JUERGEN ,  MAILAHN ELMAR ,  OHLIG HILMAR

    IPC: B29B7/38 ,  B29B7/82 ,  B29C47/10 ,  B29C48/38 ,  B29B7/46 ,  B29B7/88 ,  B29C47/38 ,  B01F7/08 ,  C08J3/20 ,  C08J5/18

    Abstract: The invention relates to a mixing device comprising at least one screw injection moulding machine (S1) and a screw injection moulding machine (S2). (S1) is provided with heating devices at least in the plasticising and homogenising section, and the outlet pertaining to (S2) is connected to the screw cylinder of (S1) in the plasticising or homogenising section pertaining to (S1). It is essential that (S1) and (S2) are connected by means of a connecting device provided with a cooling device which acts up to the inner wall of the screw cylinder of (S1). The invention also relates to methods for producing thermoplastically processable moulding materials, especially additive batches, consisting of at least one thermoplastic component (K1) and at least one component (K2). The melting or decomposition temperature (TS ) of (K2) is at least ca. 50 DEG C lower than the temperature (TW ) which limits the lower end of the thermoforming range of (K1), (K2) only largely being melted after coming into contact with (K1).

    Process for producing tough modified thermoplastics
    58.
    发明专利
    Process for producing tough modified thermoplastics 未知

    公开(公告)号：CZ107699A3

    公开(公告)日：2000-09-13

    申请号：CZ107699

    申请日：1997-09-12

    Applicant: BASF AG

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

    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: PCT No. PCT/EP97/05000 Sec. 371 Date Mar. 25, 1999 Sec. 102(e) Date Mar. 25, 1999 PCT Filed Sep. 12, 1997 PCT Pub. No. WO98/13412 PCT Pub. Date Apr. 2, 1998A process for preparing thermoplastics or polymer blends comprising (A) from 5 to 95% of a water-moist elastomer component containing up to 60% of residual water, (B) from 5 to 95% of a thermoplastic polymer, (C) from 0 to 95% of a further polymer, and (D) from 0 to 70% of additives, said process comprising mixing the components A to D in an extruder with mechanical dewatering of component A, wherein the extruder has at least two rotating screws and, in the conveying direction, is essentially composed of a metering section into which component A is fed, a squeeze section which serves for dewatering component A and contains a retarding element and an associated dewatering orifice which is present upstream of the retarding element by a distance corresponding to at least one screw diameter, a feed section in which the thermoplastic polymer B is introduced as a melt into the extruder, a plastication section with mixing or kneading elements, a devolatilization section with an orifice and in which the remaining water is removed as steam, and a discharge zone.

    59.
    发明专利
    未知

    公开(公告)号：DE19855459A1

    公开(公告)日：2000-06-08

    申请号：DE19855459

    申请日：1998-12-01

    Applicant: BASF AG

    Inventor： GUENTHERBERG NORBERT ,  HOFMANN JUERGEN ,  LUDWIG ALEXANDER ,  HEINEN HARTMUT ,  EHRMANN GERD ,  BARGHOORN PETER ,  KLEINKE ANDREAS

    IPC: B29B15/04 ,  B29C47/00 ,  B29C48/67 ,  C08F6/22 ,  C08J3/16

    Abstract: The invention relates to the essentially salt-free coagulation of plastic or rubber dispersions using shearing forces. A device with at least one shearing element (3) is used to this end. Said device has a stator (7) and a rotor (9) which is arranged inside said stator, the surfaces of the stator and the rotor that point towards each other each being flat. Alternatively, at least the rotor has a structure which is configured on its surface and which points in the direction of the stator from said surface. A gap (11) with a predetermined gap width is configured between the stator and the rotor. The method is carried out in such a way that the dispersion to be coagulated is guided through the gap (11) between the stator (7) and the rotor (9) and precipitated through the rotation of the rotor at a predetermined shear speed and with a predetermined shear deformation.

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