Mixture composition containing copolymers based on unsaturated carboxylic acid and alkenyl ether derivatives and copolymers and terpolymers containing sulfo groups and use thereof

A mixture composition having a dispersing effect comprising

• I) a copolymer based on unsaturated mono or dicarboxylic acid derivatives and oxyalkylene glycol alkenyl ethers;
• and
• II) at least one of a water-soluble copolymer or terpolymer containing sulpho groups and having a number average molecular weight of from 50,000 to 20,000,000 g/mol, wherein component I) comprises
• a) from 51 to 95 mol % of the structural groups of at least one of formula Ia, Ib or Ic
• wherein
• R1 is hydrogen or an aliphatic hydrocarbon radical comprising from 1 to 20 carbon atoms;
• X1 is OaM1, —O—(Cm—H2mO)n—R2, —NH—(CmH2mO)n—R2;
• M1 is hydrogen, a monovalent or divalent metal cation, ammonium ion, or an organic amine radical;
• a is ½ or 1
• R2 is hydrogen, an aliphatic hydrocarbon radical comprising from 1 to 20 carbon atoms, a cycloaliphatic hydrocarbon radical comprising from 5 to 8 carbon atoms, or an optionally substituted aryl radical comprising from 6 to 14 carbon atoms;
• Y1 is O or NR2;
• m is from 2 to 4;
• and
• n is from 0 to 200;
• b) from 1 to 48.9 mol % of the structural group of formula II
• wherein R3 is hydrogen or an aliphatic hydrocarbon radical containing 1 to 5 carbon atoms;
• p is from 0 to 3;
• and
• R2, m and n are as defined above;
• c) from 0.1 to 5 mol % of the structural groups of at least one of formula IIIa or IIIb
• wherein
• S1 is —H, —COaOM1, —COOR5;
• T1 is —U1—(CH—CH2—O)x—(CH2—CH2—O)y—R6 CH3
• —W′—R7
• —CO—[NH—(CH2)3], —W1—R7
• —CO—O—(CH7)z—W1—R7
• —(CH2)z—V1—(CH2)z—CH═CH—R2
• COOR5 if S1 is COOR5 or COOaM1;
• U1 is —CO—NH—, —O— or —CH2O—;
• U2 is —NH—CO—, —O— or —OCH2—;
• V1 is —O—CO—C6H4—CO—O— or —W1— wherein
• R4 is H or CH3
• R5 is an aliphatic hydrocarbon radical comprising from 3 to 20 carbon atoms, a cycloaliphatic hydrocarbon radical containing 5 to 8 carbon atoms, or an aryl radical containing 6 to 14 carbon atoms;
• R6 is R2,
• R7 is R2,
• r is from 2 to 100
• s is 1 or 2;
• z is from 0 to 4;
• x is from 1 to 150;
• y is from 0 to 15;
• and
• d) from 0 to 47.9 mol % of the structural groups of at least one of formula IVa or IVb
• wherein a, M1, X1 and Y1 are as defined above.