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    11.
    发明专利
    未知

    公开(公告)号：DK1651693T3

    公开(公告)日：2007-04-10

    申请号：DK04763311

    申请日：2004-07-17

    Applicant: BASF AG

    Inventor： MUKHERJEE PULAKESH ,  LEDUC MARC ,  CLAASSEN PETER ,  GAUWEILER WERNER ,  NOWACK ROLAND

    IPC: C08F291/06 ,  C08F251/00 ,  C08F265/00 ,  C08F283/06

    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.

    12.
    发明专利
    未知

    公开(公告)号：AT348848T

    公开(公告)日：2007-01-15

    申请号：AT04763311

    申请日：2004-07-17

    Applicant: BASF AG

    Inventor： MUKHERJEE PULAKESH ,  LEDUC MARC ,  CLAASSEN PETER ,  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.

    AQUEOUS DISPERSIONS OF HYDROSOLUBLE POLYMERISATES OF ETHYLENICALLY UNSATURATED ANIONIC MONOMERS, METHOD FOR THE PRODUCTION AND USE THEREOF
    13.
    发明专利
    AQUEOUS DISPERSIONS OF HYDROSOLUBLE POLYMERISATES OF ETHYLENICALLY UNSATURATED ANIONIC MONOMERS, METHOD FOR THE PRODUCTION AND USE THEREOF 未知

    公开(公告)号：CA2532918A1

    公开(公告)日：2005-02-10

    申请号：CA2532918

    申请日：2004-07-17

    Applicant: BASF AG

    Inventor： GAUWEILER WERNER ,  LEDUC MARC ,  MUKHERJEE PULAKESH ,  CLAASSEN PETER ,  NOWACK ROLAND

    IPC: C08F291/06 ,  C08F251/00 ,  C08F265/00 ,  C08F283/06

    Abstract: The invention relates to aqueous dispersions of hydrosoluble polymerisates o f ethylenically unsaturated anionic monomers obtainable by monomer radical polymerisation in an aqueous medium in the presence of at least one type of stabiliser characterised in that the polymerisation is carried out in the presence of at least one type of hydrosoluble polymer of the following group s: (a) branched polymerisates of vinyl acetate and/or vinyl propionate on polyethylenglycol, polyethylenglycol closed on one or two sides, by terminal groups comprising alkyl, carboxyl or amino groups, copolymerisate of alkylpolyalkylenglycolacrylates or alkylpolyalkylenglycolmethacrylates and acrylic acid and/or methacrylic acid, polyalkylenglycols, polyethylenglycole closed on one or two sides, by terminal groups comprising alkyl, carboxyl or amino groups; and (b) hydrolysed copolymerisates of vinylalkylethers and maleic anhydride in the form of free carboxyl groups and in the form of salt s neutralised at least partially by alkali metal hydroxides or ammonium basses and/or a starch of a cationically modified potato starch group, cationically modified potato starch, degradable potato and maltodextrin starches which ar e used in the form of stabilisers. A method for producing said aqueous dispersions by monomer radical polymerisation in an aqueous medium in the presence of said hydrosoluble polymerisates of the groups (a) and (b) and th e use of said aqueous dispersions in the form of thickeners for aqueous system s are also disclosed.

    15.
    发明专利
    未知

    公开(公告)号：AT176485T

    公开(公告)日：1999-02-15

    申请号：AT96118975

    申请日：1996-11-27

    Applicant: BASF AG

    Inventor： CLAASSEN PETER ,  GRAALMANN ONNO DR ,  HORMUTH WOLFGANG ALOIS ,  VISSEREN MARINUS

    IPC: C08F2/22 ,  C08F2/24 ,  C08F36/04 ,  C08F236/04

    Abstract: Process for preparing an aqueous polymer dispersion by radical aqueous emulsion polymerisation of a mixture of monomers having at least one ethylenically unsaturated group, the mixture containing at least 30 wt. % in total mixture of monomers (A) containing two conjugated ethylenically unsaturated double bonds, comprises (a) dividing the monomer mixture into n portions, where n is at least 2; (b) introducing the first monomer portion into the polymerisation reactor together with dispersing agent, radical polymerisation initiator and aqueous dispersing medium and polymerising in a first stage commencing at a polymerisation starting temperature TP1 of 0 degrees C ≤ TP1 ≤ 50 degrees C such that the temperature of the polymerisation mixture rises by at least 20 degrees C to a highest value of TP1H without exceeding 80 degrees C, and then holding the temperature constant within the range TP1H to TP1H-10 degrees C until the conversion U1 of monomer to polymer is at least 60 but at most 90 mol %, after which the polymerisation mixture is cooled to a polymerisation starting temperature TP2 where TP2 = TP1 plus or minus 10 degrees C and 0 degrees C ≤ TP2 ≤ 50 degrees C; (c) adding the second monomer portion and polymerising the monomer mixture present in the reactor in the presence of the polymer already formed, the dispersing agent and the polymerisation initiator in a second polymerisation stage commencing at the polymerisation starting temperature TP2 such that the temperature of the polymerisation mixture rises by at least 20 degrees C to a highest value of TP2H without exceeding 80 degrees C, and then holding the temperature constant within the range TP2H to TP2H-10 degrees C until the conversion U2 of monomer to polymer is at least 60 but at most 90 mol %, after which the polymerisation mixture is cooled to a polymerisation starting temperature TP3 where TP3 = TP1 plus or minus 10 degrees C and 0 degrees C ≤ TP3 ≤ 50 degrees C; (d) adding and polymerising the remaining n-2 portions of the monomer mixture successively in the same way as the second portion and (e) after the nth polymerisation stage, optionally continuing the polymerisation at a temperature of 0-50 degrees C to a total conversion Utot of monomers introduced to polymer of at least 95mol. %.

    18.
    发明专利
    未知

    公开(公告)号：DE19545096A1

    公开(公告)日：1997-06-05

    申请号：DE19545096

    申请日：1995-12-04

    Applicant: BASF AG

    Inventor： CLAASSEN PETER ,  GRAALMANN ONNO DR ,  VISSEREN MARINUS

    IPC: C08F2/22 ,  C08F2/24 ,  C08F36/04 ,  C08F236/04

    Abstract: Process for preparing an aqueous polymer dispersion by radical aqueous emulsion polymerisation of a mixture of monomers having at least one ethylenically unsaturated group, the mixture containing at least 30 wt. % in total mixture of monomers (A) containing two conjugated ethylenically unsaturated double bonds, comprises (a) dividing the monomer mixture into n portions, where n is at least 2; (b) introducing the first monomer portion into the polymerisation reactor together with dispersing agent, radical polymerisation initiator and aqueous dispersing medium and polymerising in a first stage commencing at a polymerisation starting temperature TP1 of 0 degrees C ≤ TP1 ≤ 50 degrees C such that the temperature of the polymerisation mixture rises by at least 20 degrees C to a highest value of TP1H without exceeding 80 degrees C, and then holding the temperature constant within the range TP1H to TP1H-10 degrees C until the conversion U1 of monomer to polymer is at least 60 but at most 90 mol %, after which the polymerisation mixture is cooled to a polymerisation starting temperature TP2 where TP2 = TP1 plus or minus 10 degrees C and 0 degrees C ≤ TP2 ≤ 50 degrees C; (c) adding the second monomer portion and polymerising the monomer mixture present in the reactor in the presence of the polymer already formed, the dispersing agent and the polymerisation initiator in a second polymerisation stage commencing at the polymerisation starting temperature TP2 such that the temperature of the polymerisation mixture rises by at least 20 degrees C to a highest value of TP2H without exceeding 80 degrees C, and then holding the temperature constant within the range TP2H to TP2H-10 degrees C until the conversion U2 of monomer to polymer is at least 60 but at most 90 mol %, after which the polymerisation mixture is cooled to a polymerisation starting temperature TP3 where TP3 = TP1 plus or minus 10 degrees C and 0 degrees C ≤ TP3 ≤ 50 degrees C; (d) adding and polymerising the remaining n-2 portions of the monomer mixture successively in the same way as the second portion and (e) after the nth polymerisation stage, optionally continuing the polymerisation at a temperature of 0-50 degrees C to a total conversion Utot of monomers introduced to polymer of at least 95mol. %.

    20.
    发明专利
    未知

    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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