公开(公告)号：BRPI0518485B1

公开(公告)日：2015-08-04

申请号：BRPI0518485

申请日：2005-11-21

Applicant: BASF AG

Inventor： ESSER ANTON ,  HÄHNLE HANS-JOACHIM ,  RÜBENACKER MARTIN ,  SCHALL NORBERT ,  DUPUIS JACQUES ,  NEUTZNER JOSEF ,  NIESSNER MAFRED ,  STURM BERTHOLD

IPC: D21H21/18

公开(公告)号：DE19753212A1

公开(公告)日：1999-06-02

申请号：DE19753212

申请日：1997-12-01

Applicant: BASF AG

Inventor： BOHLMANN KLAUS ,  DUENKEL DAGMAR ,  HOEHR LOTHAR DR ,  RIEBELING ULRICH ,  SCHALL NORBERT

IPC: D21H17/29 ,  D21H17/34 ,  D21H17/62 ,  D21H21/16 ,  D21H21/18

Abstract: The invention relates to a method for internally-sizing paper, paperboard and cardboard, using resin size and aqueous polymer sizing agent dispersions as fixing agents for the resin size.

公开(公告)号：BRPI0518485A2

公开(公告)日：2008-11-18

申请号：BRPI0518485

申请日：2005-11-21

Applicant: BASF AG

Inventor： ESSER ANTON ,  HAEHNLE HANS-JOACHIM ,  RUEBENACKER MARTIN ,  SCHALL NORBERT ,  DUPUIS JACQUES ,  NEUTZNER JOSEF ,  NIESSNER MAFRED ,  STURM BERTHOLD

IPC: D21H21/18

Abstract: The invention relates to a process for producing paper, board and cardboard of high dry strength by separately adding a polymer comprising vinylamine units and a polymeric anionic compound to a paper pulp, dewatering the pulp and drying the paper products, which comprises using as polymeric anionic compound at least one copolymer obtainable by copolymerizing (a) at least one N-vinylcarboxamide of the formula in which R1 and R2 are H or C1- to C6 alkyl, (b) at least one monoethylenically unsaturated monomer comprising acid groups, and/or the alkali metal, alkaline earth metal or ammonium salts thereof, and if appropriate (c) other monoethylenically unsaturated monomers, and if appropriate (d) compounds having at least two ethylenically unsaturated double bonds in their molecule.

公开(公告)号：DE102004056551A1

公开(公告)日：2006-05-24

申请号：DE102004056551

申请日：2004-11-23

Applicant: BASF AG

Inventor： ESSER ANTON ,  HAEHNLE HANS-JOACHIM ,  RUEBENACKER MARTIN ,  SCHALL NORBERT ,  DUPUIS JACQUES ,  NEUTZNER JOSEF ,  NIESNER MANFRED ,  STURM BERTHOLD

IPC: D21H17/37 ,  D21H21/18

Abstract: The invention relates to a process for producing paper, board and cardboard of high dry strength by separately adding a polymer comprising vinylamine units and a polymeric anionic compound to a paper pulp, dewatering the pulp and drying the paper products, which comprises using as polymeric anionic compound at least one copolymer obtainable by copolymerizing (a) at least one N-vinylcarboxamide of the formula in which R1 and R2 are H or C1- to C6 alkyl, (b) at least one monoethylenically unsaturated monomer comprising acid groups, and/or the alkali metal, alkaline earth metal or ammonium salts thereof, and if appropriate (c) other monoethylenically unsaturated monomers, and if appropriate (d) compounds having at least two ethylenically unsaturated double bonds in their molecule.

公开(公告)号：CA2586076A1

公开(公告)日：2006-06-01

申请号：CA2586076

申请日：2005-11-21

Applicant: BASF AG

Inventor： STURM BERTHOLD ,  ESSER ANTON ,  NIESSNER MANFRED ,  NEUTZNER JOSEF ,  DUPUIS JACQUES ,  SCHALL NORBERT ,  RUEBENACKER MARTIN ,  HAEHNLE HANS-JOACHIM

IPC: D21H21/18

Abstract: The invention relates to a process for producing paper, board and cardboard of high dry strength by separately adding a polymer comprising vinylamine units and a polymeric anionic compound to a paper pulp, dewatering the pulp and drying the paper products, which comprises using as polymeric anionic compound at least one copolymer obtainable by copolymerizing (a) at least one N-vinylcarboxamide of the formula in which R1 and R2 are H or C1- to C6 alkyl, (b) at least one monoethylenically unsaturated monomer comprising acid groups, and/or the alkali metal, alkaline earth metal or ammonium salts thereof, and if appropriate (c) other monoethylenically unsaturated monomers, and if appropriate (d) compounds having at least two ethylenically unsaturated double bonds in their molecule.

公开(公告)号：CA2586076C

公开(公告)日：2016-03-15

申请号：CA2586076

申请日：2005-11-21

Applicant: BASF AG

Inventor： ESSER ANTON ,  HAEHNLE HANS-JOACHIM ,  RUEBENACKER MARTIN ,  SCHALL NORBERT ,  DUPUIS JACQUES ,  NEUTZNER JOSEF ,  NIESSNER MANFRED ,  STURM BERTHOLD

IPC: D21H17/34 ,  D21H21/18

Abstract: The invention relates to a method for producing high dry strength paper, paperboard or cardboard by separately adding a vinyl amine unit-containing polymer and a polymeric anionic compound to a paper pulp, draining the paper pulp and drying the paper products. The inventive method is characterized by using at least one copolymer as the polymeric anionic compound which is obtained by copolymerizing (a) at least one N-propenoic acid amide of formula (I), wherein R1, R2 = H or C1 to C6 alkyl, (b) at least one acid group-containing monoethylenically unsaturated monomer and/or the alkali metal salts, alkaline earth metal salts or ammonium salts thereof and optionally (c) other monoethylenically unsaturated monomers, and optionally (d) compounds that comprise at least two ethylenically unsaturated double bonds in the molecule.