公开(公告)号：AT260937T

公开(公告)日：2004-03-15

申请号：AT00974512

申请日：2000-11-10

Applicant: BASF AG

Inventor： HEIDE WILFRIED ,  WICKEL STEFAN ,  DANIEL THOMAS ,  NILGES JOACHIM ,  HOFMANN JUERGEN

IPC: B01J14/00 ,  B01J19/00 ,  B01J19/20 ,  C08F2/01 ,  C08F2/10 ,  C08F220/00

公开(公告)号：BR0015680A

公开(公告)日：2002-08-06

申请号：BR0015680

申请日：2000-11-10

Applicant: BASF AG

Inventor： HEIDE WILFRIED ,  WICKEL STEFAN ,  DANIEL THOMAS ,  NILGES JOACHIM ,  HOFMANN JURGEN

IPC: B01J14/00 ,  B01J19/00 ,  B01J19/20 ,  C08F2/01 ,  C08F2/10 ,  C08F220/00

公开(公告)号：DE19955861A1

公开(公告)日：2001-05-23

申请号：DE19955861

申请日：1999-11-20

Applicant: BASF AG

Inventor： HEIDE WILFRIED ,  WICKEL STEFAN ,  DANIEL THOMAS ,  NILGES JOACHIM ,  HOFMANN JUERGEN

IPC: B01J14/00 ,  B01J19/00 ,  B01J19/20 ,  C08F2/01 ,  C08F2/10 ,  C08F220/00 ,  C08F220/06 ,  C08F220/56

Abstract: In a process for the continuous production of crosslinked, finely-divided gel polymers by co polymerisation of water-soluble mono-unsaturated monomers and poly-unsaturated comonomers in a multi-screw mixer-kneader, at least 5% of the heat of reaction is removed by evaporation of water, at least 25% with the product and the rest by cooling the reactor. A process for the continuous production of crosslinked, finely-divided gel polymers (I) involves the co polymerisation of (a) water-soluble mono-unsaturated monomers, (b) 0.001-5 mol% (based on a) monomers with at least two ethylenic double bonds and (c) 0-20 mol% water-insoluble mono-unsaturated monomers in 20-80 wt% aqueous solution in presence of initiators at 0-140 deg C, by feeding the monomer solution with the initiator and inert gas into a mixer-kneader with at least two parallel rotating shafts fitted with several kneading and transporting elements to move the materials through the mixer. In this process, at least 5% of the heat of reaction is removed by evaporation of water from the reaction mixture, at least 25% is removed with the product and the rest is removed by cooling the reactor walls.

公开(公告)号：FI88062C

公开(公告)日：1993-03-25

申请号：FI872610

申请日：1987-06-11

Applicant: BASF AG

Inventor： LINHART FRIEDRICH ,  DEGEN HANS-JUERGEN ,  AUHORN WERNER ,  KROENER MICHAEL ,  HARTMANN HEINRICH ,  HEIDE WILFRIED

IPC: D21H17/23 ,  D21H17/34 ,  D21H17/37 ,  D21H17/47 ,  D21H17/55 ,  D21H23/76

公开(公告)号：NO171682B

公开(公告)日：1993-01-11

申请号：NO874319

申请日：1987-10-16

Applicant: BASF AG

Inventor： BARTHOLD KLAUS ,  BAUR RICHARD ,  CREMA STEFANO CARLO ,  LASOWSKI JUERGEN ,  OPPENLAENDER KNUT ,  HEIDE WILFRIED

IPC: C08F8/00 ,  C08F8/14 ,  C08F8/30 ,  C08G65/26 ,  C08G65/332 ,  C08G81/02 ,  C10G33/04 ,  C08F220/26

公开(公告)号：FI88062B

公开(公告)日：1992-12-15

申请号：FI872610

申请日：1987-06-11

Applicant: BASF AG

Inventor： LINHART FRIEDRICH ,  DEGEN HANS-JUERGEN ,  AUHORN WERNER ,  KROENER MICHAEL ,  HARTMANN HEINRICH ,  HEIDE WILFRIED

IPC: D21H17/23 ,  D21H17/34 ,  D21H17/37 ,  D21H17/47 ,  D21H17/55 ,  D21H23/76

Abstract: Paper, board and cardboard are produced by draining a pulp slurry in the presence of high molecular weight, water-soluble polymers of N-vinylamides as drainage aids, retention agents and flocculants. These polymers are particularly effective in a pulp slurry which has a high content of interfering substances and other phenolic compounds.

公开(公告)号：AU591269B2

公开(公告)日：1989-11-30

申请号：AU7174087

申请日：1987-04-16

Applicant: BASF AG

Inventor： HEIDE WILFRIED ,  HARTMANN HEINRICH ,  VAMVAKARIS CHRISTOS

IPC: C08F2/32 ,  C08F20/56 ,  C08F20/06 ,  C08F20/18 ,  C08F20/44

Abstract: Bead polymers are prepared by reverse suspension polymerization by a process in which an aqueous solution of water-soluble ethylenically unsaturated monomers are polymerized in an aliphatic hydrocarbon using an inorganic suspending agent based on a modified finely divided mineral and, in addition, from 0.1 to 5% by weight, based on the monomers used, of a nonionic surfactant, in the presence of a polymerization initiator, with the formation of a water-in-oil polymer suspension.

公开(公告)号：CA1250069A

公开(公告)日：1989-02-14

申请号：CA463763

申请日：1984-09-21

Applicant: BASF AG

Inventor： MARTISCHIUS FRANZ-DIETER ,  HEIDE WILFRIED

IPC: C08J3/03 ,  C08J3/06 ,  C08K3/30 ,  C08K5/09 ,  C08L33/26

Abstract: Dilute aqueous solutions of high molecular weight polymers of acrylamide or methacrylamide or of homopolymers or copolymers of salts of ethylenically unsaturated C3-C5-carboxylic acids are stabilized to thermal degradation by adding (a) at least 20 ppm of an inorganic sulfur compound, in which the sulfur has an oxidation number of +2 to +5, and (b) at least 20 ppm of a complexing agent for metal ions.

公开(公告)号：NO874319L

公开(公告)日：1988-04-19

申请号：NO874319

申请日：1987-10-16

Applicant: BASF AG

Inventor： BARTHOLD KLAUS ,  BAUR RICHARD ,  CREMA STEFANO CARLO ,  LASOWSKI JUERGEN ,  OPPENLAENDER KNUT ,  HEIDE WILFRIED

IPC: C08F8/00 ,  C08F8/14 ,  C08F8/30 ,  C08G65/26 ,  C08G65/332 ,  C08G81/02 ,  C10G33/04 ,  C08F

公开(公告)号：AU7418387A

公开(公告)日：1987-12-17

申请号：AU7418387

申请日：1987-06-12

Applicant: BASF AG

Inventor： LINHART FRIEDRICH ,  DEGEN HANS-JUERGEN ,  AUHORN WERNER ,  KROENER MICHAEL ,  HARTMANN HEINRICH ,  HEIDE WILFRIED

IPC: D21H17/23 ,  D21H17/34 ,  D21H17/37 ,  D21H17/47 ,  D21H17/55 ,  D21H23/76 ,  D21H3/38

Abstract: Paper, board and cardboard are produced by draining a pulp slurry in the presence of high molecular weight, water-soluble polymers of N-vinylamides as drainage aids, retention agents and flocculants. These polymers are particularly effective in a pulp slurry which has a high content of interfering substances and other phenolic compounds.