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    PROCESS FOR PRODUCING THERMOPLASTICS
    1.
    发明专利
    PROCESS FOR PRODUCING THERMOPLASTICS 未知

    公开(公告)号：CA2266420C

    公开(公告)日：2003-12-02

    申请号：CA2266420

    申请日：1997-09-12

    Applicant: BASF AG

    Inventor： OHLIG HILMAR ,  MAILAHN ELMAR ,  GRABOWSKI SVEN ,  BUS KLAUS ,  CZAUDERNA BERNHARD ,  HOFMANN JURGEN ,  GUNTHERBERG NORBERT

    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 impact-resistant 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 D screw. 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 D screw; 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.

    4.
    发明专利
    未知

    公开(公告)号：ES2158515T3

    公开(公告)日：2001-09-01

    申请号：ES97910284

    申请日：1997-09-12

    Applicant: BASF AG

    Inventor： GUNTHERBERG NORBERT ,  HOFMANN JURGEN ,  MAILAHN ELMAR ,  OHLIG HILMAR ,  CZAUDERNA BERNHARD ,  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: 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.

    COMPUESTO DE MOLDEO TERMOPLASTICOS.
    5.
    发明专利
    COMPUESTO DE MOLDEO TERMOPLASTICOS. 未知

    公开(公告)号：MX9504393A

    公开(公告)日：1998-10-31

    申请号：MX9504393

    申请日：1995-10-18

    Applicant: BASF AG

    Inventor： GUNTHERBERG NORBERT ,  WEBER MARTIN ,  GRUBER FREDDY ,  LINDENSCHMIDT GERHARD

    IPC: B29C45/00 ,  B29C48/03 ,  B29C48/305 ,  C08F265/06 ,  C08L9/06 ,  C08L21/00 ,  C08L25/02 ,  C08L25/04 ,  C08L51/00 ,  C08L51/04 ,  C08L51/06 ,  C08L53/02 ,  C08L71/02 ,  B29C39/00

    Abstract: Compuestos de moldeo termoplástico a partir de A) 30 hasta 98% en peso de un polimerizado de injerto a partir de ak) 30 hasta 90% en peso de un nucleo de injerto elástico como caucho, obtenido por copolimerizacion de ak/1) 80 hasta 99,99% en peso de un (C1-C10-alquil) éster de ácido acrílico, ak/2) 0,01 hasta 20% en peso de un monomero reticulante, y ak/3) 0 hasta 40% en peso de uno o varios otros monomeros, as) 10 hasta 70% en peso de una cáscara de injerto a partir de as/1) 50 hasta 100% en peso de un compuesto de estireno de la formula general (I); en la que R1 y R2 significan hidrogeno o C1-C8-alquilo, y/o un (C1-C8-alquil) éster del ácido acrílico o metacrílico, y as/2) 0 hasta 50% en peso de uno o varios monomeros adicionales, B) 1 hasta 50% en peso de un polimerizado termoplástico a partir de b1) 50 hasta 100% en peso de estireno y/o alfa-metilestireno, b2) 0 hasta 50% en peso de acrilonitrilo, y b3) 0 hasta 50% en peso de uno o varios monomeros adicionales, y C) 1 hasta 70% en peso de un copolímero a partir de c1) 30 hasta 90% en peso estireno y/o alfa-metilestireno, c2) 10 hasta 70% en peso butadieno, y c3) 0 hasta 30% en peso de uno o varios monomeros adicionales donde los dobles enlaces olefínicos han sido hidolizados completamente o casi completamente.

    Thermoplastic moulding compounds
    6.
    发明专利
    Thermoplastic moulding compounds 未知

    公开(公告)号：AU4622097A

    公开(公告)日：1998-04-14

    申请号：AU4622097

    申请日：1997-09-09

    Applicant: BASF AG

    Inventor： GUNTHERBERG NORBERT ,  KNOLL KONRAD ,  WEBER MARTIN ,  LINDENSCHMIDT GERHARD

    IPC: C08J5/18 ,  C08F297/04 ,  C08L25/12 ,  C08L51/00 ,  C08L53/02

    Abstract: PCT No. PCT/EP97/04912 Sec. 371 Date Mar. 17, 1999 Sec. 102(e) Date Mar. 17, 1999 PCT Filed Sep. 9, 1997 PCT Pub. No. WO98/12256 PCT Pub. Date Mar. 26, 1998The invention relates to thermoplastic molding compositions comprising A) from 30 to 98% by weight of a graft copolymer comprising aK) from 30 to 90% by weight of an elastomeric graft core, aS) from 10 to 70% by weight of a graft shell comprising aS/1) from 50 to 100% by weight of a styrene compound or a C1-C8-alkyl acrylate or methacrylate, or a mixture thereof, and aS/2) from 0 to 50% by weight of one or more other monomers, B) from 1 to 50% by weight of a thermoplastic polymer and C) from 1 to 70% by weight of an elastomeric block copolymer prepared by anionic polymerization of the monomers with addition of a potassium compound soluble in non-polar solvents (Step 1) followed by hydrogenation of all or virtually all the olefinic double bonds of the polymer obtained in Step 1, as described in greater detail herein.

    DEVICE FOR EXTRUDING THERMOPLASTS
    9.
    发明专利
    DEVICE FOR EXTRUDING THERMOPLASTS 未知

    公开(公告)号：AU2003264278A1

    公开(公告)日：2004-04-19

    申请号：AU2003264278

    申请日：2003-09-08

    Applicant: BASF AG

    Inventor： GUNTHERBERG NORBERT ,  CZAUDERNA BERNHARD ,  SAUER MICHAEL ,  BARDON RAINER ,  AN YOHWAN

    IPC: B29C48/395 ,  B29C48/76 ,  B29C47/76

    Abstract: The extruder has one or more degassing openings which are fitted with either a woven metal wire mesh, a finely perforated plate or a slit screen. Water is extracted either partially or completely in the fluid state. At least one dewatering opening is located upstream in front of a first metering unit and another downstream from the latter. Meshes are held in a frame pressed against the openings and in particular are folded onto an opening or attached to the latter by a bayonet connection. A preferred extruder has twin screws and: a) one or more metering sections in which thermoplastic material containing water or another vaporizable fluid is fed into the barrel and one or more dewatering openings; b) a compression section for dewatering a thermoplastic and including a restrictor and a dewatering opening; c) a feed section in which further thermoplastic melt is added; d) a mixing, kneading and/or plasticizing section; e) a degassing section in which residual water is extracted as steam via a dewatering opening; f) a metering section. All dewatering openings are fitted with a woven mesh, fine perforated plate or slit screen. Initial thermoplastic components contain not more than90wt% and are mixed with additional components while degassing and dewatering. Independent claims are included for: a) a process for manufacturing thermoplastics in which thermoplastic materials are fed into the claimed equipment, degassed and then metered; b) use of a metal wire mesh, fine perforated plate and/or slit screen for covering a degassing and/or dewatering opening in the claimed extruder.

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