公开(公告)号：NO910283L

公开(公告)日：1991-07-26

申请号：NO910283

申请日：1991-01-24

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

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：FI910206A

公开(公告)日：1991-07-17

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：NO166735B

公开(公告)日：1991-05-21

申请号：NO872454

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

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：FI81814C

公开(公告)日：1990-12-10

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

公开(公告)号：AU591380B2

公开(公告)日：1989-11-30

申请号：AU1234388

申请日：1988-02-26

Applicant: BASF AG

Inventor： DEGEN HANS-JUERGEN ,  PFOHL SIGBERG ,  WEBERNDOERFER VOLKMAR ,  REHMER GERD ,  KROENER MICHAEL ,  STANGE ANDREAS

IPC: D21H17/34 ,  D21H17/28 ,  D21H17/29 ,  D21H17/37 ,  D21H17/45 ,  D21H17/56 ,  D21H21/18 ,  D21H3/28

Abstract: Paper and paperboard of high dry strength are produced by adding a dry strength enhancer to the paper stock and dewatering the paper stock with sheet formation by using as the dry strength enhancer a mixture of a cationic polymer which contains as characteristic monomers copolymerized units of (a) diallyldimethylammonium chloride, (b) N-vinylamine or (c) a substituted or unsubstituted N-vinylimidazoline and has a K value of not less than 30, and natural potato starch which is converted into a water-soluble form by heating in an aqueous medium at above the gelatinization temperature of natural potato starch in the absence of any oxidizing agents or alkali.

公开(公告)号：AU588918B2

公开(公告)日：1989-09-28

申请号：AU6311786

申请日：1986-09-24

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 ,  C08F226/08 ,  D21H3/02

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：PT84241B

公开(公告)日：1989-09-14

申请号：PT8424187

申请日：1987-02-03

Applicant: BASF AG

Inventor： HARTMANN HEINRICH ,  OFTRING ALFRED ,  KROENER MICHAEL ,  SCHMIDT WILLI ,  PROLL THEO

IPC: C07C231/24 ,  C07C67/00 ,  C07C231/00 ,  C07C233/00 ,  C07C233/03 ,  C07C233/15 ,  C08F26/00 ,  C08F126/02 ,  C07C103/365 ,  C07C102/00

公开(公告)号：AU586781B2

公开(公告)日：1989-07-20

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 ,  D21H3/58

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：ZA8704222B

公开(公告)日：1989-02-22

申请号：ZA8704222

申请日：1987-06-12

Applicant: BASF AG

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

IPC: D21H17/23 ,  D21H17/34 ,  D21H17/37 ,  D21H17/47 ,  D21H17/55 ,  D21H ,  B01D

CPC classification number: D21H17/34 ,  D21H17/37

公开(公告)号：DK407888A

公开(公告)日：1989-01-26

申请号：DK407888

申请日：1988-07-21

Applicant: BASF AG

Inventor： STRANGE ANDREAS ,  DEGEN HANS-JUERGEN ,  AUHORN WERNER ,  WEBERNDOERFER VOLKMAR ,  KROENER MICHAEL ,  HARTMANN HEINRICH

IPC: D21H17/34 ,  D21H17/28 ,  D21H17/45 ,  D21H21/18 ,  D21H3/28 ,  D21H3/36

Abstract: In the process, an agent which confers dry strength and can be obtained by mixing enzymatically degraded starch having a viscosity of 20 to 2,000 m Pa.s (determined on a 7.5% strength solution in water at 45 DEG C) with cationic polymers which contain, in copolymerised form,… a) diallyldimethylammonium chloride… b) N-vinylamine or… c) optionally substituted N-vinylimidazolines as characteristic monomers, the K-value of the cationic polymers being at least 30, is added to the paper stock and the stock is dewartered, during sheet formation.