Patent ID: 7442724

Claim:
A method for dispersing a preparation comprising solid components which is a coating paint, printing ink, or aqueous or co-solvent containing pigment concentrate which comprises adding at least one dispersing additive comprising copolymers composed of A) from about 1 to about 80 mol % of styrene-oxide based oxyalkylene glycol ethers or polyalkylene oxide ethers which comprise of one structural group of the formula Ia, Ib, Ic and/or Id where R 1 =H or an aliphatic hydrocarbon radical, p=1 to 4, q=0 to 6, t=0 to 4, i=1 to 6, l=2 or is 1 in the situation where (C m H lm O) n or (C m′ H lm′ )o is SO, m=2 to 18, m′=2 to 18, the index on the H atom being formed by the product of l and m, n=0 to 100, o=0 to 100, SO=styrene oxide where (SO) i and the alkylene oxide derivatives can be distributed randomly or blockwise in the polyether, R 2 =H, an aliphatic, linear or branched hydrocarbon radical having 1 to 6 carbon atoms, a cycloaliphatic hydrocarbon having 5 to 8 carbon atoms an aryl radical having 6 to 14 carbon atoms, phosphoric ester or a monophosphate ester; B) from about 1 to about 90 mol % of unsaturated carboxylic acid and/or dicarboxylic acid derivatives comprising at least one structural group of the formula II where S=—H, —COOM a , or —COOR 3 , where M=hydrogen, monovalent or divalent metal cation, ammonium ion, or organic amine radical, a=1 or, if M is a divalent metal cation, is ½, R 3 =an aliphatic, linear or branched hydrocarbon radical, a cycloaliphatic hydrocarbon, or an aryl radical, T=—U 1 —R 4 or —U 1 —(C m H lm O) n —(C m′ H lm′ O) o —R 2 , where U 1 =—COO—, —CONH—, —CONR 3 —, —O—, or —CH 2 O—, R 4 =H, M a , R 3 or —Q 1 —NQ 2 Q 3 , where Q 1 is a divalent alkylene radical having 2 to 24 carbon atoms, Q 2 and Q 3 — are aliphatic and/or alicyclic alkyl radicals having 1 to 12 carbon atoms, optionally oxidized to —Q 1 —N(+)O(−)Q 2 Q 3 and m, m′, n, l, o, R 1 and R 2 are as defined above; and C) from 0 to about 10 mol % of dicarboxylic acid derivatives comprising at least one structural group of the formula III where T 1 =—U 1 —(C m H lm O) n —(C m′ H lm′ O) o —R 5 , where where U 2 =—OOC—, —NHOC—, —O—, or —O—CH 2 —, where m, m′, n, l, o, S, R 1 , R 2 and U 1 are as defined above.