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公开(公告)号：DE102005052924A1
公开(公告)日：2007-05-10
申请号：DE102005052924
申请日：2005-11-03
Applicant: BASF AG
Inventor： WESTER BETTINA , BRAIG VOLKER , GAUWEILER WERNER , LEDUC MARC , BECKER STEFAN , FEUERHAKE ROBERT
Abstract: The invention relates to aqueous dispersions of water-soluble polymers of N-vinyl-carboxamides, which are substantially salt-free and comprise anionic polymeric stabilizers having a comb-like molecular structure, processes for the preparation of the dispersions in the presence of anionic polymeric stabilizers having a comb-like molecular structure and the use of the dispersions as retention aids or fixing agents in papermaking.
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公开(公告)号：CA2624998A1
公开(公告)日：2007-03-22
申请号：CA2624998
申请日：2006-09-05
Applicant: BASF AG
Inventor： BLUM RAINER , MENKE KNUT , KOCH OLIVER , MERKEL ANDREAS , LEDUC MARC , CHAMP SIMON
IPC: D21H21/10
Abstract: Process for the production of paper, board and cardboard by draining a paper stock with sheet formation in the presence of a retention aid system comprising (i) at least one polymer comprising vinylamine units, in the form of the free bases, of the salts and/or in quaternized form, as the sole cationic polymer, (ii) at least one linear, anionic polymer having a molar mass Mw of at least 1 million and/or at least one branched, anionic, water-soluble polymer and/or bentonite and/or silica gel and (iii) at least one particulate, anionic, crosslinked, organic polymer having a mean particle diameter of at least 1 μm and an intrinsic viscosity of less than 3 dl/g, and use of the retention aid system comprising the components (i), (ii) and (iii) as an additive in the production of paper, board and cardboard.
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公开(公告)号：PT1651693E
公开(公告)日：2007-02-28
申请号：PT04763311
申请日：2004-07-17
Applicant: BASF AG
Inventor： CLAASSEN PETER , GAUWEILER WERNER , MUKHERJEE PULAKESH , LEDUC MARC , NOWACK ROLAND
IPC: C08F291/06 , C08F251/00 , C08F265/00 , C08F283/06
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公开(公告)号：PT1578817E
公开(公告)日：2006-12-29
申请号：PT03789288
申请日：2003-12-16
Applicant: BASF AG
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公开(公告)号：DE50304991D1
公开(公告)日：2006-10-19
申请号：DE50304991
申请日：2003-12-16
Applicant: BASF AG
Inventor： CHRISSTOFFELS LYSANDER , HOESSEL PETER , LEDUC MARC , WOOD CLAUDIA , ANGEL MAXIMILIAN , MATHAUER KLEMENS , MUKHERJEE PULAKESH , GAUWEILER WERNER , BOELTER HENNING
IPC: C08F26/02 , A61K8/02 , A61K8/81 , A61Q1/02 , A61Q1/04 , A61Q1/06 , A61Q1/10 , A61Q1/14 , A61Q5/00 , A61Q5/02 , A61Q5/04 , A61Q5/06 , A61Q5/10 , A61Q5/12 , A61Q9/02 , A61Q11/00 , A61Q15/00 , A61Q17/04 , A61Q19/00 , A61Q19/10 , C08F20/54
Abstract: Aqueous dispersion obtainable by free-radical polymerization of a) at least one N-vinyl-containing monomer b) at least one polymeric dispersant c) at least one polymeric precipitation agent d) at least one crosslinker e) optionally further monomers f) optionally at least one regulator g) optionally a buffer substance where the weight ratio of b) to c) is in the range from 1:50 to 1:0.02.
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Patent Agency Ranking
公开(公告)号：DE102004044379A1
公开(公告)日：2006-03-30
申请号：DE102004044379
申请日：2004-09-10
Applicant: BASF AG
Inventor： LEDUC MARC , BLUM RAINER , LEIFERT PETER
Abstract: Process for the production of paper, board and cardboard by draining a paper stock on a wire with sheet formation and drying of the sheets, the sheet formation being carried out in the absence of finely divided inorganic flocculants and (a) polymers comprising vinylamine units and/or polyvinylformamide having a molar mass Mw of, in each case, at least 1 million and (b) at least one cationic or nonionic polyacrylamide and/or one cationic or nonionic polymethacrylamide having a molar mass Mw of, in each case, at least 2.5 million being used as retention aids.
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公开(公告)号：NO20060311L
公开(公告)日：2006-02-24
申请号：NO20060311
申请日：2006-01-20
Applicant: BASF AG
Inventor： CLAASSEN PETER , MUKHERJEE PULAKESH , LEDUC MARC , GAUWEILER WERNER , NOWACK ROLAND
IPC: C08F251/00 , C08F265/00 , C08F283/06 , C08F291/06
Abstract: An aqueous dispersion of water-soluble polymers obtained by free radical polymerization of ethylenically unsaturated anionic monomers in an aqueous medium in the presence of a stabilizer, wherein the stabilizer comprises: (a) at least one water-soluble polymer selected from the group consisting of a graft polymer of vinyl acetate and/or vinyl propionate on polyethylene glycol, a polyethylene glycol blocked at one or both terminal groups with an alkyl, a carboxyl or an amino group, and a copolymer of alkyl polyalkylene glycol methacrylate and methacrylic acid; and (b) at least one water-soluble polymer selected from the group consisting of a hydrolyzed copolymer of vinyl alkyl ether and maleic anhydride in the form of free carboxyl groups or in the form of salts at least partially neutralized with one or more alkali metal hydroxides or one or more ammonium bases, a cationically modified potato starch, an anionically modified potato starch, a degraded potato starch and maltodextrin.
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公开(公告)号：DE112004000437D2
公开(公告)日：2006-02-23
申请号：DE112004000437
申请日：2004-04-20
Applicant: BASF AG
Inventor： CHAMP SIMON , AUWETER HELMUT , LEDUC MARC , NOERENBERG RALF
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公开(公告)号：DE10338828A1
公开(公告)日：2005-03-24
申请号：DE10338828
申请日：2003-08-21
Applicant: BASF AG
Inventor： MUKHERJEE PULAKESH , LEDUC MARC , CLAASSEN PETER , GAUWEILER WERNER , NOWACK ROLAND
IPC: C08F251/00 , C08F265/00 , C08F283/06 , C08F291/06 , C08F20/00 , A61K7/00 , C08F2/44 , C09D5/04 , D21H19/44
Abstract: Aqueous dispersions of water-soluble polymers of ethylenically unsaturated anionic monomers produced by radical polymerization in an aqueous medium in the presence of a water-soluble polymer stabilizer are new. Aqueous dispersions of water-soluble polymers of ethylenically unsaturated anionic monomers produced by radical polymerization in an aqueous medium in the presence of a water-soluble polymer stabilizer are new. The stabilizer is a graft copolymer of vinyl acetate and/or vinyl propionate on polyethylene glycol, an alkyl polyalkylene glycol (meth)acrylate/(meth)acrylic acid copolymer, a polyalkylene glycol, a polyalkylene glycol with one or both ends capped with alkyl, carboxy or amino groups, a hydrolyzed vinyl alkyl ether/maleic anhydride copolymer (optionally in alkali metal or ammonium salt form), a cationically or anionically modified potato starch, degraded potato starch or maltodextrin. An independent claim is also included for producing aqueous dispersions of water-soluble polymers of ethylenically unsaturated anionic monomers by radical polymerization in an aqueous medium in the presence of a water-soluble polymer stabilizer as above at pH 1-13.
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公开(公告)号：DE10334262A1
公开(公告)日：2005-03-10
申请号：DE10334262
申请日：2003-07-25
Applicant: BASF AG
Inventor： MUKHERJEE PULAKESH , LEDUC MARC , CLAASSEN PETER , GAUWEILER WERNER , NOWACK ROLAND
IPC: C08F251/00 , C08F265/00 , C08F283/06 , C08F291/06 , C08F2/10 , C08F2/44 , C08F16/00 , C08F18/08 , C08F20/00 , C08F20/02 , C08F20/06 , C08F20/54 , C08F22/00 , C08F26/00 , C08J3/03 , D21H19/56
Abstract: Aqueous dispersions of water-soluble polymers of ethylenically unsaturated anionic monomers produced by radical polymerization in an aqueous medium in the presence of a water-soluble polymer stabilizer are new. Aqueous dispersions of water-soluble polymers of ethylenically unsaturated anionic monomers produced by radical polymerization in an aqueous medium in the presence of a water-soluble polymer stabilizer are new. The stabilizer is a graft copolymer of vinyl acetate and/or vinyl propionate on polyethylene glycol, an alkyl polyalkylene glycol (meth)acrylate/(meth)acrylic acid copolymer, a polyalkylene glycol, a polyalkylene glycol with one or both ends capped with alkyl, carboxy or amino groups, a hydrolyzed vinyl alkyl ether/maleic anhydride copolymer (optionally in alkali metal or ammonium salt form), a cationically or anionically modified potato starch, degraded potato starch or maltodextrin. An independent claim is also included for producing aqueous dispersions of water-soluble polymers of ethylenically unsaturated anionic monomers by radical polymerization in an aqueous medium in the presence of a water-soluble polymer stabilizer as above at pH 1-13.
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