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    PRODUCTION OF FIBRID AND POLYARYLENE ETHER FIBRID
    1.
    发明专利
    PRODUCTION OF FIBRID AND POLYARYLENE ETHER FIBRID 失效

    公开(公告)号：JPH1060730A

    公开(公告)日：1998-03-03

    申请号：JP11541097

    申请日：1997-05-06

    Applicant: BASF AG

    Inventor： BERBNER HEINZ ,  EICHENAUER ULRICH DR ,  GOEPEL JUERGEN ,  NEUFELD ECKHARD ,  ZETTLER HANS DIETER

    IPC: D01F6/76 ,  D01D5/06 ,  D01D5/11 ,  D01D5/26 ,  D01D5/40 ,  D01F6/66 ,  D21H13/00 ,  D21H13/20

    Abstract: PROBLEM TO BE SOLVED: To produce, by a single process, a fibrid that has high quality at low temperatures and is useful for paper, seals, friction brake lining, etc., by introducing a solution of a polyarylene ether in an appropriate solvent into a liquid solidifying medium under specific conditions. SOLUTION: This fibrid is obtained by introducing a solution of a polyarylene ether, such as polyarylene ether sulfone (preferably in concentration of 5-25wt.%) in an organic solvent, such as N-methylpyrrolidone and dimethylformamide, into a liquid solidifying medium while simultaneously giving the solution a shearing force so that a shearing space having an average energy density of 5W.s/cm or more is present during the introduction of the solution into the solidifying medium. In this case, the ratio by volume of the polymer solution to the solidifying medium is preferably in a range of from (1:10) to (1:20).

    5.
    发明专利
    未知

    公开(公告)号：ES2122726T3

    公开(公告)日：1998-12-16

    申请号：ES96100873

    申请日：1996-01-23

    Applicant: BASF AG

    Inventor： HAHNLE HANS-JOACHIM DR ,  NEUFELD ECKHARD ,  SCHORNICK GUNNAR DR ,  MINGES ROLAND DR ,  ANSTOCK THOMAS DR ,  TROPSCH JURGEN DR

    IPC: B01D21/01 ,  B01J19/00 ,  B01J19/24 ,  C02F1/56 ,  C08F2/00 ,  C08F2/10 ,  C08F2/16 ,  C08F4/04 ,  C08F20/00

    Abstract: Prodn. of high mol. polymers involves: (a) polymerising water-soluble, mono-ethylenically unsatd. monomers and opt. crosslinkers contg. non-conjugated ethylenically unsatd. double bonds. in the molecule and opt. water-insol. monoethylenically unsatd. monomers in aq. soln. in the presence of polymerisation initiators in a tubular reactor; and (b) forcing the gelatinous reaction mixt. from the reactor with an inert gas. The reactor has: (i) a conical taper at one end, so the ratio of the dia. (D1) of the reactor to the dia. (D2) at the end of the cone is (2-25); and (ii) the angle between D1 at the beginning of the cone and the inner wall of the cone of more than 45 and less than 90 degrees .

    7.
    发明专利
    未知

    公开(公告)号：DE59302774D1

    公开(公告)日：1996-07-11

    申请号：DE59302774

    申请日：1993-02-10

    Applicant: BASF AG

    Inventor： BESECKE SIEGMUND DR ,  DECKERS ANDREAS DR ,  FISCHER HERMANN DR ,  NEUFELD ECKHARD

    IPC: C08F8/30 ,  C08F8/32 ,  C08F8/48 ,  C08J3/14

    Abstract: The production of particulate polymers obtainable by reacting a polymer based on C1-C22-alkyl esters of acrylic and/or methacrylic acid with ammonia and/or at least one primary amine RNH2, by …… A) allowing a solution of the polymer to exit a nozzle in a multiplicity of liquid jets, … B) causing the liquid jets to break up into drops having a narrow particle size distribution by setting the nozzle into longitudinal or transverse vibration or by pulsing the liquid in the nozzle or by providing a distance between exit from the nozzle and entry into a precipitation bath, … C) precipitating the resultant drops by introduction into a precipitation bath containing a liquid in which the polymer is insoluble, … D) removing solvent residues and other impurities present in the polymer particles, … and the use of the resultant particulate poly(meth)acrylimides for the production of mouldings, and moulding obtainable from these polymers.

    8.
    发明专利
    未知

    公开(公告)号：DE4205882A1

    公开(公告)日：1993-09-02

    申请号：DE4205882

    申请日：1992-02-26

    Applicant: BASF AG

    Inventor： BESECKE SIEGMUND DR ,  DECKERS ANDREAS DR ,  FISCHER HERMANN DR ,  NEUFELD ECKHARD

    IPC: C08F8/30 ,  C08F8/32 ,  C08F8/48 ,  C08J3/14

    Abstract: The production of particulate polymers obtainable by reacting a polymer based on C1-C22-alkyl esters of acrylic and/or methacrylic acid with ammonia and/or at least one primary amine RNH2, by …… A) allowing a solution of the polymer to exit a nozzle in a multiplicity of liquid jets, … B) causing the liquid jets to break up into drops having a narrow particle size distribution by setting the nozzle into longitudinal or transverse vibration or by pulsing the liquid in the nozzle or by providing a distance between exit from the nozzle and entry into a precipitation bath, … C) precipitating the resultant drops by introduction into a precipitation bath containing a liquid in which the polymer is insoluble, … D) removing solvent residues and other impurities present in the polymer particles, … and the use of the resultant particulate poly(meth)acrylimides for the production of mouldings, and moulding obtainable from these polymers.

    10.
    发明专利
    未知

    公开(公告)号：DE4326774A1

    公开(公告)日：1995-02-16

    申请号：DE4326774

    申请日：1993-08-10

    Applicant: BASF AG

    Inventor： NEUFELD ECKHARD ,  ARNOLD-MAUER BAERBEL DR ,  HOFMANN JUERGEN ,  HEITZ THOMAS DR ,  SACHSENWEGER CHRISTOPH DR ,  WIELAND PETRA

    IPC: C08G67/00 ,  B01J19/24 ,  C08G61/12

    Abstract: In order to prepare polyarylene ether ketones by Friedel-Crafts polycondensation, a reaction mixture comprising A. a monomer system, B. a Lewis acid, C. optionally a Lewis base and D. an inert solvent is polycondensed in two reaction zones and discharged in plug flow from the second reaction zone and formulated. In this process, the reaction mixture is polycondensed in the first reaction zone with stirring to a viscosity of about 2000 mPa.s, transferred into the second reaction zone and discharged therefrom by means of an inert solvent or by means of an inert gas saturated with the solvent under a pressure of from about 6 to 65 bar, preferably even 10 to 25 bar, where the conveying pressure is reduced in at least two steps and the pressure reduction in the first step is at most 20%.

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