公开(公告)号：CA2494648C

公开(公告)日：2011-10-04

申请号：CA2494648

申请日：2003-07-23

Applicant: BASF AG

Inventor： BLUM RAINER ,  HEMEL RALF ,  MAHR NORBERT ,  LORZ RUDOLF

IPC: D21H23/10 ,  D21H23/18 ,  D21H17/37 ,  D21H17/45 ,  D21H17/68 ,  D21H21/10

Abstract: Disclosed is a method for producing paper, paperboard, and cardboard by shearing the paper material, adding a microparticle system made of cationic polymers and a fine-particle inorganic component to the paper material following the last shearing step before agglomerating the material, dewatering the paper material so as to form sheets, and drying said sheets. Cationic polyacrylamides, polymers containing vinylamine units, and/or poly diallyl dimethyl ammonium chloride, each of which has an average molar weight Mw of at least 500,000 Dalton and a maximum charge density of 4.0 meq/g, is/are used as cationic polymers.

公开(公告)号：CA2485113C

公开(公告)日：2011-04-26

申请号：CA2485113

申请日：2003-05-19

Applicant: BASF AG

Inventor： GRIMM GUNTHER ,  BRAIG VOLKER ,  CHAMP SIMON ,  MAHR NORBERT

IPC: C08F8/00 ,  C08G81/02 ,  C08G85/00

Abstract: The invention relates to hydrophobically modified polymers, which contain vinylamine units or ethylenimine units and can be obtained by reacting: (a) polymers containing vinylamine units or ethylenimine units with; (b) compounds of formula (I) R - A - (EO, PO, BuO)n - X, in which: R represents C4 to C26 alkyl or C4 to C26 alkenyl; A represents O, NH, COO; EO represents an ethylene oxide unit; PO represents a propylene oxide unit, BuO represents a butylene oxide unit, n ranges from 1 to 250, and; X represents a functional group that can be covalently bonded to an OH group. The invention also relates to a method for producing hydrophobically modified polymers, which contain vinylamine units or ethylenimine units, by reacting polymers containing vinylamine units or ethylenimine units with at least one hydrophobing agent of formula (I), and to the use of polymers obtained in this manner as an additive to paper pulp during the production of paper.

公开(公告)号：CA2609411A1

公开(公告)日：2006-12-07

申请号：CA2609411

申请日：2006-05-24

Applicant: BASF AG

Inventor： BLUM RAINER ,  MECK DIETER ,  HEMEL RALF ,  GISPERT NORBERT ,  HAMERS CHRISTOPH ,  SCHMIDT-THUMMES JURGEN ,  MAHR NORBERT

IPC: D21H17/69

Abstract: The invention relates to a method for producing filled papers and filled paper products by adding an aqueous suspension of at least one finely particulate polymer-pigment hybrid to a paper-making stock and dewatering the paper-making stock while forming sheets. The polymer-pigment hybrid is obtained by grinding an aqueous suspension of at least inorganic pigment in the presence of at least one binder and optionally by drying the aqueous suspension so obtained and redispersing the dried polymer-pigment hybrid in water. The invention also relates to the polymer-pigment hybrids so obtained as fillers for producing filled paper or filled paper products.

公开(公告)号：BR0313051A

公开(公告)日：2005-06-14

申请号：BR0313051

申请日：2003-07-23

Applicant: BASF AG

Inventor： BLUM RAINER ,  HEMEL RALF ,  MAHR NORBERT ,  LORZ RUDOLF

IPC: D21H23/10 ,  D21H17/37 ,  D21H17/45 ,  D21H17/68 ,  D21H21/10 ,  D21H23/18

Abstract: A process for preparation of paper, pasteboard, or cardboard involving cutting of the paper pulp, addition of microparticles of cationic polymer, and a finely divided inorganic component after the last cutting step and before pulp swelling, dewatering of the pulp, and sheet formation and drying of the sheets is new. A process for preparation of paper, pasteboard, or cardboard involving cutting of the paper pulp, addition of microparticles of cationic polymer, and a finely divided inorganic component after the last cutting step and before pulp swelling, dewatering of the pulp, and sheet formation and drying of the sheets. The cationic polymer of the microparticle system is cationic polyacrylamide, polymer containing vinylamine units, and/or polydiallyl dimethylammonium chloride containing polymer of mean mol.wt. 500,000 Dalton, and maximum charge density 4.0 meq/g, where the microparticle system free from polymers of charging density (sic) more than 4 meq/g is used as the retention agent.

公开(公告)号：CA2494648A1

公开(公告)日：2004-02-19

申请号：CA2494648

申请日：2003-07-23

Applicant: BASF AG

Inventor： HEMEL RALF ,  MAHR NORBERT ,  LORZ RUDOLF ,  BLUM RAINER

IPC: D21H23/10 ,  D21H17/37 ,  D21H17/45 ,  D21H17/68 ,  D21H21/10 ,  D21H23/18

Abstract: Disclosed is a method for producing paper, paperboard, and cardboard by shearing the paper material, adding a microparticle system made of cationic polymers and a fine-particle inorganic component to the paper material following the last shearing step before agglomerating the material, dewateri ng the paper material so as to form sheets, and drying said sheets. Cationic polyacrylamides, polymers containing vinylamine units, and/or poly diallyl dimethyl ammonium chloride, each of which has an average molar weight Mw of at least 500,000 Dalton and a maximum charge density of 4.0 meq/g, is/are used as cationic polymers.

公开(公告)号：DE10225702A1

公开(公告)日：2003-12-18

申请号：DE10225702

申请日：2002-06-10

Applicant: BASF AG

Inventor： CHAMP SIMON ,  KAUB HANS-PETER ,  ESSER ANTON ,  DECK SASCHA ,  MAHR NORBERT

IPC: G01N21/64 ,  G01N27/416 ,  G01N33/34 ,  G01N21/84 ,  G01N27/26

Abstract: A process measures the retention of an additive (A) in a sample of fibrous suspension in which the additive is admixed to the suspension at a defined speed. The resulting mixture then flows through a pipe (6) and a filter, following which the residual admixture is determined and the retention calculated. The presence of the additive is determined by fluroescent-spectroscopy or ion-selective electrodes (12). The additive (A) is a calcium carbonate bulk filler or an alkyl-ketendime. Two or more additives (A, B, C) are added to the solution of suspended fibres in succession. After the introduction of the first additive, and prior to the admission of a further additive (C), the sample flows through a zone in which the solution is subjected to shear forces. The first additive contains water-soluble polymers. The further additive (C) is a particulate phase. Also claimed is a commensurate assembly.

公开(公告)号：DE10223279A1

公开(公告)日：2003-12-04

申请号：DE10223279

申请日：2002-05-24

Applicant: BASF AG

Inventor： GRIMM GUENTHER ,  BRAIG VOLKER ,  CHAMP SIMON ,  MAHR NORBERT

IPC: C08F8/00 ,  C08G81/02 ,  C08G73/02 ,  C08G69/48

Abstract: Hydrophobically modified polymers containing vinylamine or ethylenimine units and obtainable by reacting (a) polymers containing vinylamine or ethylenimine units with (b) compounds of the formula R-A-(EO, PO, BuO)n-X (I), where R is C4- to C26-alkyl or C4- to C26-alkenyl, A is O, NH or COO, EO is an ethylene oxide unit, PO is a propylene oxide unit, BuO is a butylene oxide unit, n is from 1 to 250 and X is a functional group which can be covalently bonded to an OH group, process for the preparation of hydrophobically modified polymers containing vinylamine or ethylenimine units by reacting polymers containing vinylamine or ethylenimine units with a water repellent of the formula I and use of the polymers thus obtainable as an additive to paperstock in papermaking.

公开(公告)号：NZ514892A

公开(公告)日：2003-08-29

申请号：NZ51489200

申请日：2000-03-23

Applicant: BASF AG

Inventor： LORENCAK PRIMOZ ,  STANGE ANDREAS ,  DIEHL KURT ,  MAHR NORBERT

IPC: C08B31/00 ,  C08B31/18 ,  C08G81/00 ,  C08L3/00 ,  C08L3/02 ,  C08L3/04 ,  C08L3/10 ,  D21H17/28 ,  D21H17/29 ,  D21H17/44 ,  D21H17/45 ,  D21H21/10 ,  D21H21/18 ,  D21H21/20

Abstract: A method for modifying starch by heating the starch in an aqueous medium to temperatures greater than the pasting temperature of the starch in the presence of (a) a polymer cationization agent selected from the group consisting of polymers with molecular weights up to 1 million containing vinylamine units, polyethylene imines, polydiallyldimethylammonium chlorides, condensates of dimethylamine with epichlorohydrin or dichloroalkanes, condensates of dichloroethane and ammonia and mixtures of the above mentioned compounds, and (b) polymer dehydrators for paper selected from the group consisting of water-soluble, crosslinked polyamidoamines that are optionally grafted with ethylene imine, polymers with molecular weights of greater than 1 million containing acrylamide and/or methacrylamide units, polymers with molecular weights of greater than 1 million containing vinylamine units and mixtures of said compounds. Also disclosed are reaction products obtained by the inventive method and the use of the reaction products as dry-strength agents in the production of paper, board and paperboard.

公开(公告)号：ES2181005T3

公开(公告)日：2003-02-16

申请号：ES97928236

申请日：1997-06-18

Applicant: BASF AG

Inventor： DECKERS ANDREAS ,  KLIMESCH ROGER ,  OPPENLANDER KNUT ,  MAHR NORBERT ,  WENDEROTH BERND ,  KNAUF WOLFGANG

IPC: C07C219/08 ,  C08F210/02 ,  C10L1/22 ,  C10L1/236 ,  C10L1/24

公开(公告)号：AU751395B2

公开(公告)日：2002-08-15

申请号：AU5368100

申请日：2000-08-28

Applicant: BASF AG

Inventor： OPPENLANDER KNUT ,  OETTER GUNTER ,  KRONER RUDI ,  MAHR NORBERT ,  JATZEK HANS-JURGEN ,  TAEGER KLAUS

IPC: C07D233/24 ,  C10L1/22 ,  C23F11/14