公开(公告)号：PT94914A

公开(公告)日：1991-04-18

申请号：PT9491490

申请日：1990-08-06

Applicant: BASF AG

Inventor： NIESSNER MANFRED ,  GRUND NORBERT ,  HEIDE WILFRIED ,  HARTMANN HEINRICH

IPC: B01D21/01 ,  C02F1/50 ,  C02F1/54 ,  C02F1/56 ,  C02F11/00 ,  C02F11/14 ,  C08F2/32 ,  C08F6/00 ,  C08F6/24 ,  C09K3/00

Abstract: Process for the preparation of finely divided polymer powders by polymerisation of water-soluble monomers in the aqueous phase of a water-in-oil emulsion in the presence of water-in-oil emulsifiers and polymerisation initiators, removal of water from the resulting water-in-oil polymer suspension by an azeotropic method and isolation of the suspended finely divided polymer powder, wherein either the polymerisation of the water-soluble monomers is carried out in the presence of 0.1 to 10% by weight, based on the monomers used in the polymerisation, of protective colloids or the protective colloids are added to the water-in-oil polymer suspension after the end of the polymerisation. The polymerisation is preferably carried out in the presence of a wetting agent. The finely divided pulverulent polymers are used as flocculants or thickeners for aqueous systems.

公开(公告)号：NO166233B

公开(公告)日：1991-03-11

申请号：NO863833

申请日：1986-09-25

Applicant: BASF AG

Inventor： PFOHL SIGBERG ,  KROENER MICHAEL ,  HARTMANN HEINRICH ,  DENZINGER WALTER

IPC: C08F8/12 ,  C08F16/16 ,  C08F18/02 ,  C08F20/52 ,  C08F26/00 ,  C08F26/06 ,  C08F216/16 ,  C08F216/18 ,  C08F218/02 ,  C08F218/04 ,  C08F218/08 ,  C08F218/10 ,  C08F220/00 ,  C08F220/02 ,  C08F220/10 ,  C08F220/18 ,  C08F220/42 ,  C08F220/56 ,  C08F226/02 ,  C08F226/10 ,  D21H17/34 ,  D21H17/36 ,  D21H17/37 ,  D21H17/45 ,  D21H21/18 ,  C08F226/00

Abstract: Water-soluble copolymers containing copolymerized vinylamine units are prepared by copolymerizing (a) from 95 to 10 mol % of N-vinylformamide and (b) from 5 to 90 mol % of an ethylenically unsaturated monomer from the group consisting of vinyl acetate, vinyl propionate, C1-C4-alkyl vinyl ethers, the esters, nitriles and amides of acrylic acid and methacrylic acid and N-vinylpyrrolidone, and then eliminating from 30 to 100 mol % of the formyl groups from the copolymer. Preferred copolymers are copolymers of N-vinylformamide and vinyl acetate, in which from 30 to 100 mol % of the monomer units are hydrolyzed. The copolymers are used in papermaking to increase the dry strength and wet strength of the paper.

公开(公告)号：AU6022990A

公开(公告)日：1991-02-14

申请号：AU6022990

申请日：1990-08-07

Applicant: BASF AG

Inventor： NIESSNER MANFRED ,  BECK JUERGEN ,  HARTMANN HEINRICH ,  KEMNA ANDREAS H ,  WICKEL STEFAN

IPC: A61F13/53 ,  A61F13/15 ,  A61F13/49 ,  B01J20/26 ,  C08F6/00 ,  C08J3/00

Abstract: Process for improving the water absorption capacity of crosslinked, water-swellable polymers by treating water-containing, finely divided polymer gels having a solids content of 20 to 65% by weight at temperatures of at least 50 DEG C with steam, the solids content of the water-containing polymer gels being increased by not more than 30% by weight and the polymer gels then being dried in a conventional manner.

公开(公告)号：FI910328A0

公开(公告)日：1991-01-22

申请号：FI910328

申请日：1991-01-22

Applicant: BASF AG

Inventor： FREUDENBERG ENRIQUE ,  LINHART FRIEDRICH ,  TRESCH RAINER ,  HARTMANN HEINRICH ,  DENZINGER WALTER ,  KROENER MICHAEL ,  SENDHOFF NORBERT

IPC: D21H21/04 ,  D21H17/34 ,  D21H17/37 ,  D21H17/41 ,  D21H21/10 ,  D21H27/00 ,  D21H

Abstract: In a process for making paper, paperboard and cardboard, paper pulps containing interfering materials are dehydrated in the presence of polymers which, as characteristic constituents, contain copolymerised units of the formulae … … with R and R = H or C1- to C3-alkyl, and have K values of at least 130, the polymers containing less than 10 mol% of units of formula II.

公开(公告)号：FI910206A0

公开(公告)日：1991-01-15

申请号：FI910206

申请日：1991-01-15

Applicant: BASF AG

Inventor： AUHORN WERNER ,  LINHART FRIEDRICH ,  LORENCAK PRIMOZ ,  KROENER MICHAEL ,  SENDHOFF NORBERT ,  DENZINGER WALTER ,  HARTMANN HEINRICH

IPC: C08F8/12 ,  D21H17/34 ,  D21H17/36 ,  D21H

公开(公告)号：NO904954D0

公开(公告)日：1990-11-15

申请号：NO904954

申请日：1990-11-15

Applicant: BASF AG

Inventor： MOENCH DIETMAR ,  HARTMANN HEINRICH ,  FREUDENBERG ENRIQUE ,  STANGE ANDREAS

IPC: D21H20060101 ,  D21H17/45 ,  D21H21/10 ,  D21H

公开(公告)号：CA2051678A1

公开(公告)日：1990-11-14

申请号：CA2051678

申请日：1990-05-10

Applicant: BASF AG

Inventor： DENZINGER WALTER ,  HARTMANN HEINRICH ,  GOUSETIS CHARALAMPOS ,  GOECKEL ULRICH ,  RULAND ALFRED

IPC: C02F1/00 ,  C02F5/00 ,  C02F5/08 ,  C02F5/10 ,  C02F5/12 ,  C02F5/14 ,  C08F20/02 ,  C08F26/06 ,  C08F220/04 ,  C08F220/06 ,  C08F222/02 ,  C08F226/06

Abstract: O.Z. 0050/40810 Water-soluble copolymers which contain, polymerized in, as characteristic monomers (a) 99 to 50% by weight of monoethylenically unsaturated carboxylic acids with 3 to 8 carbon atoms or their salts and (b) 1 to 50 % by weight of N-vinylLmidazole or sub stituted N-vinylimidazoles, their salts or products of quaternization and which have K values of from 10 to 50 are used for water treatment to reduce deposits of scale and sludge in water-conveying systems.

公开(公告)号：CA2055479A1

公开(公告)日：1990-11-10

申请号：CA2055479

申请日：1990-05-04

Applicant: BASF AG

Inventor： BOECKH DIETER ,  SAEELMANN-EGGEBERT HANS P ,  HARTMANN HEINRICH ,  KUD ALEXANDER ,  TRIESELT WOLFGANG

IPC: C08F216/12 ,  C08F2/06 ,  C08F2/38 ,  C08F16/14 ,  C08F16/32 ,  C08F20/10 ,  C08F216/14 ,  C08F218/02 ,  C08F218/04 ,  C08F220/10 ,  C08F220/12 ,  C08F220/18 ,  C08F220/28 ,  C08F290/00 ,  C08F290/06 ,  C08F299/02 ,  C11D3/37

Abstract: - 28 - O.Z. 0050/40800 Copolymers useful in amounts of from 0.1 to 15% by weight as grayness inhibiting and primary detergency boosting additives in pulverulent liquid detergents have K values of from 10 to 80 (determined by Fikentscher in dimethylformamide at 25.degree.C with a polymer concentration of 2% by weight) and are obtainable by copolymerizing monomer mixtures of (a) from 10 to 60% by weight of water-soluble monomers obtainable from (A) water-soluble polyalkylene glycols or (B) water-soluble alkoxylated C1-C25-alcohols, for example by esterification with C3-C6-carboxylic acids, by vinylation with acetylene or by allylation with alkenyl ethers, or by reaction with ammonia to give the corresponding end group aminated compounds (A) or (B) and by reaction with monoethylenically unsaturated C3-C6-carboxylic acids to form the amides, and (b) from 40 to 90% by weight of vinyl esters of satura ted monocarboxylic acids and/or alkyl esters of monoethylenically unsaturated C3-C6-monocarboxylic acids at up to 160.degree.C in inert solvents in the presence of from 0.1 to 5% by weight, based on the monomers, of polymerization initiators, and, if the amount of initiator is less than 2% by weight, additionallly in the presence of polymerization regulators.

公开(公告)号：NO165300B

公开(公告)日：1990-10-15

申请号：NO854768

申请日：1985-11-28

Applicant: BASF AG

Inventor： BRUNNMUELLER FRITZ ,  KROENER MICHAEL ,  HARTMANN HEINRICH ,  LINHART FRIEDRICH ,  PFITZNER KLAUS

IPC: C08F8/00 ,  C08F8/12 ,  C08F26/00 ,  C08F26/02

公开(公告)号：FI81814B

公开(公告)日：1990-08-31

申请号：FI854625

申请日：1985-11-22

Applicant: BASF AG

Inventor： BRUNNMUELLER FRITZ ,  KROENER MICHAEL ,  HARTMANN HEINRICH ,  LINHART FRIEDRICH ,  PFITZNER KLAUS

IPC: C08F8/00 ,  C08F8/12 ,  C08F26/00 ,  C08F26/02