公开(公告)号：AU580352B2

公开(公告)日：1989-01-12

申请号：AU5045085

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 ,  C08F126/02

公开(公告)号：NO880856A

公开(公告)日：1988-08-29

申请号：NO880856

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 ,  D21H17/37 ,  D21H17/45 ,  D21H17/56 ,  D21H21/18 ,  D21H3/28

CPC classification number: D21H17/455 ,  D21H17/28 ,  D21H17/45 ,  D21H21/18

公开(公告)号：FI883504A0

公开(公告)日：1988-07-25

申请号：FI883504

申请日：1988-07-25

Applicant: BASF AG

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

IPC: D21H17/34 ,  D21H17/28 ,  D21H17/45 ,  D21H21/18 ,  D21H

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.

公开(公告)号：FI880836A0

公开(公告)日：1988-02-23

申请号：FI880836

申请日：1988-02-23

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 ,  D21H

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：NO860756L

公开(公告)日：1987-08-31

申请号：NO860756

申请日：1986-02-28

Applicant: BASF AG

Inventor： PFOHL BEGBERG ,  HARTMANN HEINRICH ,  FREY GUENTER ,  KROENER MICHAEL ,  GUTH KLAUS

IPC: D21H20060101 ,  D21H

公开(公告)号：NO860756A

公开(公告)日：1987-08-31

申请号：NO860756

申请日：1986-02-28

Applicant: BASF AG

Inventor： PFOHL BEGBERG ,  HARTMANN HEINRICH ,  FREY GUENTER ,  KROENER MICHAEL ,  GUTH KLAUS

IPC: D21H20060101 ,  D21H

公开(公告)号：FI870486A

公开(公告)日：1987-08-06

申请号：FI870486

申请日：1987-02-05

Applicant: BASF AG

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

IPC: C07C231/24 ,  C07C67/00 ,  C07C231/00 ,  C07C233/00 ,  C07C233/03 ,  C07C233/15 ,  C08F26/00 ,  C08F126/02 ,  C07C

公开(公告)号：NO870442D0

公开(公告)日：1987-02-04

申请号：NO870442

申请日：1987-02-04

Applicant: BASF AG

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

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

公开(公告)号：DK57687D0

公开(公告)日：1987-02-04

申请号：DK57687

申请日：1987-02-04

Applicant: BASF AG

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

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：FI863755A0

公开(公告)日：1986-09-17

申请号：FI863755

申请日：1986-09-17

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 ,  C08F

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.