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    CARBOXYLATE ESTER OF POLYSACCHARIDE
    2.
    发明专利
    CARBOXYLATE ESTER OF POLYSACCHARIDE 未知

    公开(公告)号：CA2943657A1

    公开(公告)日：2015-10-01

    申请号：CA2943657

    申请日：2015-03-11

    Applicant: BASF SE

    Inventor： SHABELINA NATALIA ,  WITTELER HELMUT ,  DETERING JURGEN ,  SCHNEIDER ULRICH ,  NEUMANN JESSICA

    IPC: C08B37/00 ,  C11D3/22 ,  C11D17/06

    Abstract: The invention relates to a carboxylate ester of polysaccharide characterised in that it possesses ester bonds with trimellitic anhydride and is soluble in water. The polysaccharide is esterified with trimellitic anhydride and the degree of substitution of the polysaccharide lies in the range of from 0.5 to 3. The invention further relates to methods for the manufacture of these polysaccharides esters in organic solvents, in water or in an extruder or a kneader and to their use in fabric and home care formulations.

    POLYMER MIXTURES AS DEPOSIT INHIBITORS IN WATER-BEARING SYSTEMS
    7.
    发明专利
    POLYMER MIXTURES AS DEPOSIT INHIBITORS IN WATER-BEARING SYSTEMS 未知

    公开(公告)号：CA2844585C

    公开(公告)日：2019-09-17

    申请号：CA2844585

    申请日：2012-08-06

    Applicant: BASF SE

    Inventor： DETERING JURGEN ,  GADT TORBEN ,  NIED STEPHAN ,  KEMPTER ANDREAS ,  URTEL BOLETTE ,  NEUMANN JESSICA

    IPC: C08L35/00 ,  C02F5/08 ,  C08L33/02

    Abstract: A polymer mixture in solid or aqueous form, comprising, based on the polymer fraction, (A) 5 to 95% by weight of a water-soluble or water-dispersible polymer having a weight-average molecular weight of 1000 to 20 000 g/mol of (a1) 20 to 80% by weight of at least one monomer selected from the group consisting of C2 to C8 olefins, allyl alcohol, isoprenol, C1 to C4 alkyl vinyl ethers and vinyl esters of C1 to C4 monocarboxylic acids, (a2) 20 to 80% by weight of at least one monoethylenically unsaturated C3 to C8 carboxylic acid, an anhydride or salt of same, (a3) 0 to 50% by weight of one or more monomers comprising sulfonic acid groups, (B) 5 to 95% by weight of a water-soluble or water-dispersible polymer having a weight-average molecular weight of 1000 to 50 000 g/mol of (b1) 30 to 100% by weight of at least one monoethylenically unsaturated C3 to C8 carboxylic acid, an anhydride or salt of same, (b2) 0 to 70% by weight of one or more monomers comprising sulfonic acid groups, (b3) 0 to 70% by weight of at least one nonionic monomer of the formula (I) H2C=C(R1)(CH2)x O[R2-O]o-R3 (I), where R1 is hydrogen or methyl, R2 is identical or different, linear or branched, C2-C6 alkylene radicals, which can be arranged in blocks or randomly, and R3 is hydrogen or a straight-chain or branched C1-C4 alkyl radical, x is 0, 1 or 2, and o is a number from 3 to 50.

    PREPARING MALEIC ACID-ISOPRENOL COPOLYMERS
    8.
    发明专利
    PREPARING MALEIC ACID-ISOPRENOL COPOLYMERS 未知

    公开(公告)号：CA2840781C

    公开(公告)日：2019-07-23

    申请号：CA2840781

    申请日：2012-07-10

    Applicant: BASF SE

    Inventor： DETERING JURGEN ,  GADT TORBEN ,  NIED STEPHAN ,  KEMPTER ANDREAS

    IPC: C08F216/02 ,  C08F2/38 ,  C08F222/06 ,  C11D3/37

    Abstract: The present invention provides polymers having improved scale-inhibiting performance, which are effective in inhibiting precipitates and deposits of calcium carbonate, calcium sulfate and basic magnesium salts in water-carrying systems., and also a process for preparation thereof. The present invention provides a process for preparing maleic acid-isoprenol copolymers from a) 30% to 80% by weight of maleic acid, b) 5% to 60% by weight of isoprenol, c) 0% to 30% by weight of one or more further ethylenically unsaturated monomers, which comprises polymerizing maleic acid, isoprenol and optionally the further ethylenically unsaturated monomer in the presence of a redox initiator and of a chain transfer agent at a temperature in the range from 10 to 80°C.

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