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    91.
    发明专利
    未知

    公开(公告)号：DE4444378A1

    公开(公告)日：1996-06-20

    申请号：DE4444378

    申请日：1994-12-14

    Applicant: BASF AG

    Inventor： WEBER MARTIN DR ,  FISCH HERBERT DR ,  PIPPER GUNTER ,  GOTTSCHALK AXEL DR

    IPC: C08L33/24 ,  C08L77/00 ,  C08L77/06 ,  C08L101/06 ,  C08L21/00

    Abstract: Thermoplastic moulding materials (I) contain (A) 1-98.5 wt.% partly aromatic copolyamide, (B) 1-98.5 wt.% polymethacrylimide, (C) 0.5-30 wt.% polymeric component with OH gps., (D) 0-60 wt.% fibrous and/or particulate filler(s), (E) 0-40 wt.% impact-modifying rubber and (F) 0-40 wt.% conventional additives etc. Also claimed are fibres, film and mouldings made from (I).

    92.
    发明专利
    未知

    公开(公告)号：DE59106535D1

    公开(公告)日：1995-10-26

    申请号：DE59106535

    申请日：1991-11-26

    Applicant: BASF AG

    Inventor： GOETZ WALTER DR ,  BETZ WALTER DR ,  PIPPER GUNTER

    IPC: C08G69/04 ,  C08K7/02 ,  C08K3/00 ,  C08L77/00 ,  D01F1/10 ,  D01F6/90

    Abstract: Thermoplastic molding compositions are obtainable by mixing A) from 0.5 to 5% by weight of a thermoplastic polyester elastomer and B) from 0 to 50% by weight of fibrous or particulate fillers or mixtures thereof into a melt of C) from 40 to 99.5% by weight of a polyamide prepolymer having a viscosity number of from 40 to 80 ml/g and subsequent postcondensation in solid phase.

    THE CONTINUOUS PRODUCTION OF LOW MOLECULAR WEIGHT POLYAMIDES
    93.
    发明专利
    THE CONTINUOUS PRODUCTION OF LOW MOLECULAR WEIGHT POLYAMIDES 未知

    公开(公告)号：CA2166314A1

    公开(公告)日：1995-01-12

    申请号：CA2166314

    申请日：1994-06-20

    Applicant: BASF AG

    Inventor： PIPPER GUNTER ,  KLEINKE ANDREAS ,  HILDENBRAND PETER

    IPC: C08G69/14 ,  B01J19/28 ,  C08G69/04 ,  C08G69/16 ,  C08G69/46

    Abstract: A process is disclosed for continuously preparing polyamides from a mixture of at least one lactam and water, as well as if required other monomer units and/or usual additives and fillers in polyamide-forming conditions. The mixture of initial substances is heated in the liquid phase in a first reaction zone until a conversion rate of at least 70% is reached, then is adiabatically expanded and further polymerised in another reaction zone. In the first reaction zone, 0.5 to 7 % by weight water are added to the mixture, the mixture is heated up to a temperature range from 220 to 310 .degree.C and polymerised until a conversion rate of at least 85 % is reached. In the second reaction zone, after the mixture is expanded, it is further polymerised at temperatures in a range from 215 to 300 .degree.C without further heating.

    96.
    发明专利
    未知

    公开(公告)号：DE4039420A1

    公开(公告)日：1992-06-11

    申请号：DE4039420

    申请日：1990-12-08

    Applicant: BASF AG

    Inventor： GOETZ WALTER DR ,  BETZ WALTER DR ,  PIPPER GUNTER

    IPC: C08G69/04 ,  C08K7/02 ,  C08L77/00 ,  D01F1/10 ,  D01F6/90 ,  C08K3/00

    Abstract: Thermoplastic molding compositions are obtainable by mixing A) from 0.5 to 5% by weight of a thermoplastic polyester elastomer and B) from 0 to 50% by weight of fibrous or particulate fillers or mixtures thereof into a melt of C) from 40 to 99.5% by weight of a polyamide prepolymer having a viscosity number of from 40 to 80 ml/g and subsequent postcondensation in solid phase.

    PROCESS FOR THE CONTINUOUS PRODUCTION OF POLYAMIDES
    99.
    发明专利
    PROCESS FOR THE CONTINUOUS PRODUCTION OF POLYAMIDES 未知

    公开(公告)号：DE3468886D1

    公开(公告)日：1988-02-25

    申请号：DE3468886

    申请日：1984-06-13

    Applicant: BASF AG

    Inventor： PIPPER GUNTER ,  SCHMIDT FRANZ DR ,  THEYSOHN RAINER DR ,  RIEGGER SIEGFRIED DR ,  HEIL EDUARD ,  FISCHER HERMANN DR ,  THOMA RICHARD DR ,  MATTHIES PAUL DR

    IPC: C08G69/00 ,  C08G69/26 ,  C08G69/28 ,  C08L77/00

    Abstract: Nylons are prepared by a continuous process in which, in a precondensation zone, an aqueous solution of a salt of a dicarboxylic acid of 6 to 18 carbon atoms and a diamine of 6 to 18 carbon atoms is heated to 250 DEG -300 DEG C. under superatmospheric pressure, with simultaneous vaporization of water and formation of a prepolymer, the prepolymer and the vapor are separated, and the former is fed into a polycondensation zone and condensed under superatmospheric pressure of from 1 to 10 bar and at from 250 DEG to 300 DEG C., wherein the aqueous salt solution is condensed under superatomspheric pressure of from 1 to 10 bar in the first third of the tubular precondensation zone provided with baffles, until the degree of conversion is not less than 93%, and the prepolymer and the vapor phase are brought into intimate contact with one another in the remaining two thirds of the precondensation zone.

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