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Inorganic binder composition comprising a copolymer

  • US 10,035,729 B2
  • Filed: 06/12/2015
  • Issued: 07/31/2018
  • Est. Priority Date: 06/12/2014
  • Status: Active Grant
First Claim
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1. A composition comprising(α

  • ) at least one inorganic binder(β

    ) at least one water-soluble copolymer based on(a) 0.1 to 20 wt % of at least one monomer of the formula (I),
    H2C═

    C(R1)—

    R2

    O—

    (—

    CH2

    CH2

    O—

    )k

    (—

    CH2

    CH(R3)—

    O—

    )l

    (—

    CH2

    CH2

    O—

    )m

    R4



    (I)where the units —

    (—

    CH2

    CH2

    O—

    )k, —

    (—

    CH2

    CH(R3)—

    O—

    )l and —

    (—

    CH2

    CH2

    O—

    )m are arranged in a block structure in the order shown in formula (I)and the radicals have the following meanings;

    k;

    is from 10 to 150;

    l ;

    is from 5 to 25;

    m;

    is from 1 to 15;

    R1;

    is H or methyl;

    the radicals R2;

    are each, independently of one another, a single bond or a divalent, linking group selected from the group consisting of —

    (CnH2n)— and



    O—

    (Cn′

    H2n′

    )— and



    C(O)—

    O—

    (Cn″

    H2n″

    )—

    , where n, n′ and

    n″

    are each a natural number from 1 to 6;

    R3;

    is a hydrocarbon radical having at least 2 carbon atoms or an ether group of the general formula —

    CH2

    O—

    R3′

    , where R3′

    is a hydrocarbon radical having at least 2 carbon atoms and the radicals R3 can be identical or different within the group —

    (—

    CH2

    CH(R3)—

    O—

    )l;

    the radicals R4;

    are each, independently of one another, H or a hydrocarbon radical having 1 to 4 carbon atoms, and(b) 25 to 99.9 wt % by weight of at least one monoethylenically unsaturated, hydrophilic monomer (b) different from monomer (a),where the wt % figures are in each case based on the total amount of all monomers in the copolymer and the at least one copolymer has a molar mass average M of 1 500 000 to 30 000 000 g/mol which is determined by the Mark-Houwink relationship (1)
    M=([η

    ]/K)1/α





    (1),where K=0.0049, α

    =0.8 and [η

    ] is the intrinsic viscosity.

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