公开(公告)号：AT103023T

公开(公告)日：1994-04-15

申请号：AT90125089

申请日：1990-12-21

Applicant: BASF AG

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

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

公开(公告)号：DK0438755T3

公开(公告)日：1994-04-05

申请号：DK90125089

申请日：1990-12-21

Applicant: BASF AG

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

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：DE4218221A1

公开(公告)日：1993-12-09

申请号：DE4218221

申请日：1992-06-03

Applicant: BASF AG

Inventor： KROENER MICHAEL DR ,  DUPUIS JACQUES DR

IPC: C07C231/22 ,  C07C233/03 ,  C08F2/40 ,  C08F226/02 ,  C09K15/16

Abstract: A method of stabilizing N-vinylformamide, which may contain customary polymerization inhibitors, against polymerization during storage or transport, comprises adding to the N-vinylformamide monomers of the general formula (III) where R+H, CH3 R2+C1-C4-alkyl, as stabilizer in amounts of from 1 to 99 DEG 6 by weight, based on the mixture.

公开(公告)号：DE4209847A1

公开(公告)日：1993-09-30

申请号：DE4209847

申请日：1992-03-26

Applicant: BASF AG

Inventor： KOEHLER ULRICH DR ,  KAHL THOMAS-MICHAEL DR ,  NEUHAUSER HORST DR ,  SIEGEL HARDO DR ,  KROENER MICHAEL DR

IPC: C07D233/54 ,  C07D233/58 ,  C07D521/00 ,  C07D233/36

公开(公告)号：DE4032660A1

公开(公告)日：1992-04-16

申请号：DE4032660

申请日：1990-10-15

Applicant: BASF AG

Inventor： KROENER MICHAEL DR ,  NILZ CLAUDIA DR ,  SENDHOFF NORBERT DR ,  STANGE ANDREAS DR ,  CLERCQ ARNOLD DE DR ,  RIEBELING ULRICH

IPC: D21H17/34 ,  D21H17/45 ,  D21H17/62 ,  D21H21/16

Abstract: According to a paper, paperboard and cardboard internal sizing process, resin size is used, as well as cationic polymers containing polymerized vinylamine units as fixing agents for the resin size.

公开(公告)号：DE4030380A1

公开(公告)日：1992-04-02

申请号：DE4030380

申请日：1990-09-26

Applicant: BASF AG

Inventor： FIKENTSCHER ROLF DR ,  KROENER MICHAEL DR

IPC: C07C231/08 ,  C07C233/03 ,  C07C233/36 ,  C08F26/00 ,  C08F26/02 ,  C08L39/00 ,  D21H17/34

Abstract: Poly-N-vinylformamide which contains structural units of the formula (I) and a terminal double bond of the formula (II) is prepared by anionic polymerization of N-vinylformamide in the presence of bases.

公开(公告)号：AT68173T

公开(公告)日：1991-10-15

申请号：AT87101294

申请日：1987-01-30

Applicant: BASF AG

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

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

公开(公告)号：AT67538T

公开(公告)日：1991-10-15

申请号：AT88111572

申请日：1988-07-19

Applicant: BASF AG

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

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

公开(公告)号：DE4007310A1

公开(公告)日：1991-09-12

申请号：DE4007310

申请日：1990-03-08

Applicant: BASF AG

Inventor： END LUTZ DR ,  DENZINGER WALTER ,  KROENER MICHAEL DR ,  SENDHOFF NORBERT DR ,  FREUDENBERG ENRIQUE DR ,  LINHART FRIEDRICH DR ,  FIKENTSCHER ROLF DR ,  HARTMANN HEINRICH DR

IPC: C08F2/32 ,  C08F2/44 ,  C08F4/28 ,  C08F4/34 ,  C08F8/12 ,  C08F26/00 ,  C08F26/02 ,  C08K3/30 ,  C08K5/21 ,  D21H17/34 ,  D21H21/10

公开(公告)号：DE4001045A1

公开(公告)日：1991-07-18

申请号：DE4001045

申请日：1990-01-16

Applicant: BASF AG

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

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

Abstract: Paper, pasteboard and cardboard (I) are produced by draining off pulp contg. interfering substances in the presence of fixing agents (II) and cationic retention agents; the novelty is that (II) are hydrolysed homo- and/or co-polymers of N-vinylformamide (III) with degree of hydrolysis (DH) at least. 60%. (II) has DH 70-100%; (II) are hydrolysed copolymers of (III) and up to 90 mol.% unsatd. comonomers, namely vinyl acetate or propionate, 1-4C alkyl vinyl ether, N-vinyl-pyrrolidone, or esters, nitriles or amides of (meth)acrylic acid, with DH = 70-100%; pref. (II) are obtd. by polymerisation of 100-10 mol.% (III) and 0-90 mol.% vinyl acetate and/or propionate, followed by cleavage of 60-100% of the formyl gps., and 60-100% of the acetyl and/or propionyl gps.