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    Polyamide continuous extraction process
    21.
    发明专利
    Polyamide continuous extraction process 未知

    公开(公告)号：CZ20001930A3

    公开(公告)日：2000-11-15

    申请号：CZ20001930

    申请日：1998-11-24

    Applicant: BASF AG

    Inventor： HILDEBRAND PETER ,  LANG REINHARD ,  LUDWIG ALFONS ,  PIPPER GUNTER

    IPC: C08J3/12 ,  B29B9/16 ,  C08G69/16 ,  C08G69/46

    Abstract: A process for continuous extraction of polyamide particles in an essentially vertical extraction column using an aqueous extractant comprises using an extraction column that is divided into two zones and performing an extraction with a recirculating 15-40% strength by weight aqueous epsi-caprolactam solution in the first zone and then with countercurrent water at a from 5 to 40° C. lower temperature in the second zone. The process provides for economical extraction of polyamides with a low level of monomers and oligomers.

    CONTINUOUS POLYAMIDE EXTRACTION PROCESS
    22.
    发明专利
    CONTINUOUS POLYAMIDE EXTRACTION PROCESS 未知

    公开(公告)号：SK6972000A3

    公开(公告)日：2000-11-07

    申请号：SK6972000

    申请日：1998-11-24

    Applicant: BASF AG

    Inventor： HILDENBRAND PETER ,  LANG REINHARD ,  LUDWIG ALFONS ,  PIPPER GUNTER

    IPC: B29B9/16 ,  C08G69/16 ,  C08J3/12 ,  C08G69/46

    Abstract: A process for continuous extraction of polyamide particles in an essentially vertical extraction column using an aqueous extractant comprises using an extraction column that is divided into two zones and performing an extraction with a recirculating 15-40% strength by weight aqueous epsi-caprolactam solution in the first zone and then with countercurrent water at a from 5 to 40° C. lower temperature in the second zone. The process provides for economical extraction of polyamides with a low level of monomers and oligomers.

    23.
    发明专利
    未知

    公开(公告)号：BR9908249A

    公开(公告)日：2000-10-31

    申请号：BR9908249

    申请日：1999-02-22

    Applicant: BASF AG

    Inventor： MOHRSCHLADT RALF ,  HILDEBRANDT VOLKER ,  PIPPER GUNTER ,  FUCHS EBERHARD

    IPC: C08G69/18 ,  C08G69/20

    Abstract: In a process for producing polyamides by polymerization of lactams in the presence of metal oxides as heterogeneous catalysts, the metal oxides are used in a form which permits mechanical removal from the reaction mixture and are removed from the reaction mixture in the course of or on completion of the polymerization.

    24.
    发明专利
    未知

    公开(公告)号：DK0927212T3

    公开(公告)日：2000-08-28

    申请号：DK97943850

    申请日：1997-09-19

    Applicant: BASF AG

    Inventor： LAUN MARTIN ,  KOWITZ CHRISTOPH ,  BAUER PETER ,  BEIMBORN DIETER BERNHARD ,  BRUCHMANN BERND ,  FALLER UWE ,  PAGGA UDO ,  PIPPER GUNTER ,  WARZELHAN VOLKER

    IPC: C08J5/00 ,  C08G18/42 ,  C08G18/76 ,  C08G18/79 ,  C08G63/20 ,  C09D5/00 ,  C09D167/00 ,  C09D175/04 ,  D01F6/84 ,  D01F6/92

    Abstract: PCT No. PCT/EP97/04908 Sec. 371 Date Mar. 17, 1999 Sec. 102(e) Date Mar. 17, 1999 PCT Filed Sep. 19, 1997 PCT Pub. No. WO98/12242 PCT Pub. Date Mar. 20, 1998Biodegradable polyesters based on A) 95-99.99 mol % of at least one polyester A containing as monomeric building blocks of an acid component comprising a11) 20-95 mol % of at least one aliphatic or cycloaliphatic dicarboxylic acid or its ester-forming derivative and a12) 5-80 mol % of at least one aromatic dicarboxylic acid or its ester-forming derivative and at least one dihydroxy compound or at least one amino alcohol or their mixtures, and B) 0.01-5 mol % of a mixture comprising mono-, bi-, tri-, tetra- and higher-nuclear isocyanurates or corresponding compounds containing two, three or four functional groups capable of reacting with the end groups of polyester A, or mixtures of the isocyanurates and the corresponding compounds, as well as molding compositions comprising said polyesters, their manufacture and their use in the manufacture of moldings, filsm, fibers and coatings.

    29.
    发明专利
    未知

    公开(公告)号：ES2122792T3

    公开(公告)日：1998-12-16

    申请号：ES96902980

    申请日：1996-02-03

    Applicant: BASF AG

    Inventor： WARZELHAN VOLKER ,  PIPPER GUNTER ,  SEELIGER URSULA ,  BAUER PETER ,  BEIMBORN DIETER BERNHARD ,  YAMAMOTO MOTONORI

    IPC: C08G63/60 ,  C08G63/66 ,  C08J9/04 ,  C08G63/672 ,  C08G63/91 ,  C08L3/00 ,  C08L67/00 ,  C08L101/16 ,  C09J167/00 ,  D21H19/28

    Abstract: PCT No. PCT/EP96/00458 Sec. 371 Date Aug. 14, 1997 Sec. 102(e) Date Aug. 14, 1997 PCT Filed Feb. 3, 1996 PCT Pub. No. WO96/25448 PCT Pub. Date Aug. 22, 1996Biodegradable polymers comprising a polyether ester P1 obtained by reacting a first mixture of 20-95 mol% of adipic acid or ester-forming derivatives thereof or mixtures thereof, 5-80 mol% of terephthalic acid or ester-forming derivatives thereof or mixtures thereof, and 0-5 mol% of a compound containing sulfonate groups, and a second mixture of 15-99.8 mol% of a dihydroxy compound selected from the group consisting of C2-C6-alkanediols and C5-C10-cycloalkanediols, 85-0.2 mol% of a dihydroxy compound IHO-[(CH2)n-O]m-H(n=2, 3 or 4, m=2-250) with 0-5 mol%, based on the first mixture, of a compound D having at least three groups capable of ester formation, and a bisoxazoline C1, their preparation and their use in the manufacture of biodegradable molding materials.

    30.
    发明专利
    未知

    公开(公告)号：DE59600710D1

    公开(公告)日：1998-11-26

    申请号：DE59600710

    申请日：1996-02-03

    Applicant: BASF AG

    Inventor： WARZELHAN VOLKER ,  PIPPER GUNTER ,  SEELIGER URSULA ,  BAUER PETER ,  BEIMBORN DIETER ,  YAMAMOTO MOTONORI

    IPC: C08J9/04 ,  C08G63/60 ,  C08G63/66 ,  C08G63/672 ,  C08G63/91 ,  C08L3/00 ,  C08L67/00 ,  C08L101/16 ,  C09J167/00 ,  D21H19/28

    Abstract: PCT No. PCT/EP96/00458 Sec. 371 Date Aug. 14, 1997 Sec. 102(e) Date Aug. 14, 1997 PCT Filed Feb. 3, 1996 PCT Pub. No. WO96/25448 PCT Pub. Date Aug. 22, 1996Biodegradable polymers comprising a polyether ester P1 obtained by reacting a first mixture of 20-95 mol% of adipic acid or ester-forming derivatives thereof or mixtures thereof, 5-80 mol% of terephthalic acid or ester-forming derivatives thereof or mixtures thereof, and 0-5 mol% of a compound containing sulfonate groups, and a second mixture of 15-99.8 mol% of a dihydroxy compound selected from the group consisting of C2-C6-alkanediols and C5-C10-cycloalkanediols, 85-0.2 mol% of a dihydroxy compound IHO-[(CH2)n-O]m-H(n=2, 3 or 4, m=2-250) with 0-5 mol%, based on the first mixture, of a compound D having at least three groups capable of ester formation, and a bisoxazoline C1, their preparation and their use in the manufacture of biodegradable molding materials.

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