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    13.
    发明专利
    未知

    公开(公告)号：BR9608052A

    公开(公告)日：1999-02-17

    申请号：BR9608052

    申请日：1996-03-28

    Applicant: BASF AG

    Inventor： KOPIETZ MICHAEL ,  GOETZ WALTER ,  HORLE HELMUT ,  HOFMANN JUERGEN

    IPC: C08G69/26 ,  C08G69/04 ,  C08G69/28 ,  C08G73/10 ,  G03F7/004 ,  G03F7/038 ,  G11B5/48 ,  G11B21/00 ,  H05K1/05

    Abstract: A polymer based on a dicarboxylic acid and a diamine is prepared by polycondensation in an extruder, by(a) heating a mixture of a dicarboxylic acid having from 4 to 12 carbon atoms and a diamine having from 4 to 12 carbon atoms, which mixture is solid at room temperature and has a residual moisture content of less than 5% by weight, to a temperature in the range from 150 to 400° C. under autogenous pressure in a contrarotating twin-screw extruder to give a product A,(b) feeding the product A to a corotating twin-screw extruder, with the product A being exposed to a temperature in the range from 150 to 400° C. and residual water present and also water from the polycondensation being removed through the degassing openings, to give a product B, with the proviso that the corotating twin-screw extruder has at least two segments having different pressures.

    14.
    发明专利
    未知

    公开(公告)号：AT174361T

    公开(公告)日：1998-12-15

    申请号：AT96909142

    申请日：1996-03-28

    Applicant: BASF AG

    Inventor： GOETZ WALTER ,  HOFMANN JUERGEN ,  KOPIETZ MICHAEL ,  HORLE HELMUT

    IPC: C08G69/26 ,  C08G69/04 ,  C08G69/28 ,  C08G73/10 ,  G03F7/004 ,  G03F7/038 ,  G11B5/48 ,  G11B21/00 ,  H05K1/05

    Abstract: A polymer based on a dicarboxylic acid and a diamine is prepared by polycondensation in an extruder, by(a) heating a mixture of a dicarboxylic acid having from 4 to 12 carbon atoms and a diamine having from 4 to 12 carbon atoms, which mixture is solid at room temperature and has a residual moisture content of less than 5% by weight, to a temperature in the range from 150 to 400° C. under autogenous pressure in a contrarotating twin-screw extruder to give a product A,(b) feeding the product A to a corotating twin-screw extruder, with the product A being exposed to a temperature in the range from 150 to 400° C. and residual water present and also water from the polycondensation being removed through the degassing openings, to give a product B, with the proviso that the corotating twin-screw extruder has at least two segments having different pressures.

    17.
    发明专利
    未知

    公开(公告)号：DE19830389A1

    公开(公告)日：2000-01-13

    申请号：DE19830389

    申请日：1998-07-08

    Applicant: BASF AG

    Inventor： GOETZ WALTER ,  HANELT RAINER ,  SKUPIN GABRIEL

    IPC: A22C13/00 ,  C08J5/18 ,  C08L67/02 ,  C08L67/04 ,  C08L67/00 ,  C08L89/00

    Abstract: The invention relates to the utilization of shaped materials based on at least one biologically degradable polyactide or polyester or the mixtures thereof for producing foils for air-dried or smoked food products. The invention also relates to a method of production of said foils and biaxially oriented and thermofixed tubular films from a shaped material based on at least one biologically degradable polyactide or polyester or the mixtures thereof.

    18.
    发明专利
    未知

    公开(公告)号：DE59601843D1

    公开(公告)日：1999-06-10

    申请号：DE59601843

    申请日：1996-10-22

    Applicant: BASF AG

    Inventor： GLUECK ALEXANDER ,  GOETZ WALTER ,  LEY GREGOR

    IPC: C08L33/02 ,  C08L75/00 ,  C08L75/04 ,  C08L77/00 ,  C08L77/02 ,  C08L77/06 ,  C08L77/12 ,  C08L79/08

    Abstract: PCT No. PCT/EP96/04582 Sec. 371 Date Jan. 29, 1998 Sec. 102(e) Date Jan. 29, 1998 PCT Filed Oct. 22, 1996 PCT Pub. No. WO97/16490 PCT Pub. Date May 9, 1997Homo- or copolymers A composed of A1) 40-100% by weight of monomers of the general formula I A2) 0-60% by weight of monomers of the general formula II and A3) 0-10% by weight of further monomers capable of free radical polymerization, the percentages by weight of the monomers A1) to A3) summing to 100% and R1 and R4 being identical or different radicals and each being hydrogen or C1-C4-alkyl, R2, R3, R5, R6 being identical or different radicals and each being hydrogen or C1-C4-alkyl, with the proviso that at least two radicals from the group consisting of R1, R2 and R3 and from the group consisting of R4, R5 and R6 are hydrogen, and R7 is alkyl, cycloalkyl, aryl or aralkyl, are used as branching agents for amino-containing thermoplastic polymers.

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