Dispersing agents used in the preparation of aqueous pigment pastes

摘要

A preparation comprising solid components, which is a coating paint, printing ink, or aqueous or co-solvent containing pigment concentrate, is dispersed by adding a dispersing additive(s) including copolymers comprising 1-80 mol.% of styrene-oxide based oxyalkylene glycol ethers or polyalkylene oxide ethers; 1-90 mol.% of unsaturated carboxylic acid and/or dicarboxylic acid derivatives; and 0-10 mol.% of dicarboxylic acid derivative. Dispersion of a preparation comprising solid components, which is a coating paint, printing ink, or aqueous or co-solvent containing pigment concentrate, comprises adding a dispersing additive(s) including copolymers comprising (A) 1-80 mol.% of styrene-oxide based oxyalkylene glycol ethers or polyalkylene oxide ethers, which comprise a structural group of formulae -CH 2-C[(CH 2) p-O-(SO) i-(C mH lmO) n-(C m'>H lm'>O) o-R 2>]R 1>- (Ia), -CH 2-C[O-((CH 2) q-O) t-(SO) i-(C mH lmO) n-(C m'>H lm'>O) o-R 2>]R 1 - (Ib), -CH 2-C[COO-(SO) i-(C mH lmO) n-(C m'>H lm'>O) o-R 2>]R 1>- (Ic), and/or -CH 2-C[CONH-(SO) i-(C mH lmO) n-(C m'>H lm'>O) o-R 2>]R 1>- (Id); (B) 1-90 mol.% of unsaturated carboxylic acid and/or dicarboxylic acid derivatives comprising a structural group(s) of formula -C(S)H-(R 1>)C(T)- (II); and (C) 0-10 mol.% of dicarboxylic acid derivatives comprising a structural group(s) of formula -C(S)H-(R 1>)C(T 1>)- (III). R 1>H or aliphatic hydrocarbon radical; p : 1-4; q : 0-6; t : 0-4; i : 1-6; l : 2 or 1 in the situation where (C mH lmO) nor (C m'>H lm'>) ois SO; m, m '>2-18, the index on the H atom being formed by the product of l and m; n, o : 0-100; SO : styrene oxide, where (SO) iand alkylene oxide derivatives can be distributed randomly or blockwise in the polyether; R 2>H, aliphatic hydrocarbon radical, cycloaliphatic hydrocarbon, aryl radical, which is optionally substituted or a phosphoric ester derivative, sulfate derivative, or sulfonate derivative; S : -H, -COOM a, or -COOR 3>; M : H, monovalent. or divalent metal cation, ammonium ion, or organic amine radical; a : 1 or if M is a divalent metal cation is 1/2; R 3>aliphatic hydrocarbon radical, cycloaliphatic hydrocarbon, or aryl radical; T : -U 1>-Re or -U 1>-(C mH lmO) n-(C m'>H lm'>O) o-R 2>; U 1>-COO-, -CONH-, -CONR 3>-, -O-, or -CH 2O-; R 4>H, M a, R 3>, or -Q-NQ 2>Q 3>; Q 1>divalent alkylene radical having 2-24C atoms; Q, Q 3>- : aliphatic and/or alicyclic alkyl radicals having 1-12C atoms, optionally oxidized to -Q 1>-N(+)O(-)Q 2>Q 3>; T 1>-U 1>-(C mH lmO) n-(C m'>H lm'>O) o-R 5>; R 5>R 1>or -CH 2-C(R 1>)H-U 2>-C(R 1>)=C(S)H;and U 2>-OOC-, -NHOC-, -O-, or -O-CH 2-.