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    23.
    发明专利
    未知

    公开(公告)号：DE102005054151A1

    公开(公告)日：2007-05-16

    申请号：DE102005054151

    申请日：2005-11-14

    Applicant: BASF AG

    Inventor： GUENTHERBERG NORBERT ,  HOFMANN JUERGEN ,  WASMER KARL-HEINZ ,  LOTH WOLFGANG ,  SCHIERHOLZ JENS-UWE ,  SCHMAUS PAULUS ,  MOURS MARIAN ,  SCHADE CHRISTIAN ,  ITTEMANN PETER ,  HEINEN HARTMUT ,  CZAUDERNA BERNHARD ,  SAUER MICHAEL ,  BARDON RAINER ,  KRUEGER MARCO

    IPC: C08F6/10 ,  B01D1/06 ,  B01D19/00 ,  C08J3/00 ,  F28F1/40

    Abstract: The invention relates to a tube bundle heat exchanger (R) for removing dissolved substances from a polymer solution (P) by degassing, having a bundle of tubes (R) which are arranged parallel to one another and vertically and are fastened at both ends in each case in one tube plate (B), and having a degassing region below the lower tube plate (B), having an insert (1) in each tube (R), which insert (1) narrows the free throughflow cross section through the tube (R), and wherein the polymer solution (P) is supplied into the tubes (R) in a single-phase liquid state, and having a casing space around the tubes (R) which is traversed by a heat carrier, wherein the degassing takes place by means of a pressure drop between the inlet pressure of the polymer solution (P) in the tube bundle heat exchanger (R) and the degassing region, characterized in that each insert (1) is designed in such a way as to generate a pressure step between the inlet pressure and the pressure in the degassing region, by means of which pressure step a predefined low residual content of dissolved substances is obtained in the degassed polymer, and an additional heat input which is necessary for this purpose takes place via the heat carrier into the single-phase liquid polymer solution (P).

    25.
    发明专利
    未知

    公开(公告)号：DE59803025D1

    公开(公告)日：2002-03-21

    申请号：DE59803025

    申请日：1998-06-23

    Applicant: BASF AG

    Inventor： GUENTHERBERG NORBERT ,  KOCH JUERGEN ,  ITTEMANN PETER ,  SEIBRING JOACHIM ,  GRABOWSKI SVEN ,  MC KEE EDMUND ,  MOSBACH NORBERT ,  HEINEN HARTMUT ,  CZAUDERNA BERNHARD ,  NIESSNER NORBERT

    IPC: C08L51/06 ,  C08F279/04 ,  C08L25/12 ,  C08L25/14 ,  C08L51/04 ,  C08L55/02

    Abstract: A thermoplastic molding composition having little intrinsic color is produced from a graft copolymer and a thermoplastic polymer. The graft copolymer is produced from a soft elastomeric particulate graft base obtained by polymerization of a conjugated diene alone or with a small amount of a monoethylenically unsaturated monomer, upon which is grafted a vinylaromatic monomer and acrylonitrile and optionally another monoethylenically unsaturated monomer. The thermoplastic polymer is a copolymer of a vinylaromatic monomer and acrylonitrile and optionally an additional monoethylenically unsaturated monomer. The thermoplastic molding composition has a low level of intrinsic color coupled with good mechanical properties and can be processed by, for example, extrusion, injection molding, calendaring, blow molding, compression molding, or sintering.

    26.
    发明专利
    未知

    公开(公告)号：BR9810666A

    公开(公告)日：2000-09-26

    申请号：BR9810666

    申请日：1998-06-23

    Applicant: BASF AG

    Inventor： GUENTHERBERG NORBERT ,  KOCH JUERGEN ,  ITTEMAN PETER ,  SEIBRING JOACHIM ,  GRABOWSKI SVEN ,  KEE GRAHAM EDMUND MC ,  MOSBACH NORBERT ,  CZAUDERNA BERBHARD ,  NIESSNER NORBERT ,  HEINEN HARTMUT

    IPC: C08L51/06 ,  C08F279/04 ,  C08L25/12 ,  C08L25/14 ,  C08L51/04 ,  C08L55/02

    Abstract: A thermoplastic molding composition having little intrinsic color is produced from a graft copolymer and a thermoplastic polymer. The graft copolymer is produced from a soft elastomeric particulate graft base obtained by polymerization of a conjugated diene alone or with a small amount of a monoethylenically unsaturated monomer, upon which is grafted a vinylaromatic monomer and acrylonitrile and optionally another monoethylenically unsaturated monomer. The thermoplastic polymer is a copolymer of a vinylaromatic monomer and acrylonitrile and optionally an additional monoethylenically unsaturated monomer. The thermoplastic molding composition has a low level of intrinsic color coupled with good mechanical properties and can be processed by, for example, extrusion, injection molding, calendaring, blow molding, compression molding, or sintering.

    29.
    发明专利
    未知

    公开(公告)号：AT151096T

    公开(公告)日：1997-04-15

    申请号：AT93912794

    申请日：1993-05-26

    Applicant: BASF AG

    Inventor： ALICKE GERHARD ,  WEILBACHER MANFRED ,  WOLFF BERNARDO ,  HEINEN HARTMUT ,  DIETZEN FRANZ-JOSEF ,  WEBER REINHOLD ,  HAHN MANFRED

    IPC: C08J9/12 ,  C08J9/14 ,  C08L25/06

    Abstract: PCT No. PCT/EP93/01320 Sec. 371 Date Nov. 22, 1994 Sec. 102(e) Date Nov. 22, 1994 PCT Filed May 26, 1993 PCT Pub. No. WO93/24560 PCT Pub. Date Dec. 9, 1993.Process for the production of foam boards having a minimum thickness of 20 mm and a cross-sectional area of at least 50 cm2 by extruding a mixture of the styrene polymer, from 1 to 10% by weight, based on the styrene polymer, of a blowing agent, wherein the blowing agent contains at least one ether from the group consisting of dimethyl ether, methyl ethyl ether and methyl vinyl ether.

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