Patent ID: 11926715
Assignee: BASF SE
Field: Materials, metallurgy (Chemistry)
Classification: CPC C  Y | IPC C

Claim 3:
4. The process according to claim 1, wherein the polymeric dispersant (PD) has at least one structural unit of general formulae (IIa), (IIb), (IIc) or (IId):, in which
R10, R11 and R12 are each independently H or an unbranched or branched C1-C4-alkyl group;
Z is O or S;
E is an unbranched or branched C1-C6-alkylene group, a cyclohexylene group, CH2-C6H10, 1,2-phenylene, 1,3-phenylene or 1,4-phenylene;
G is O, NH or CO—NH; or
E and G together are a chemical bond;
A is CxH2x with x=2, 3, 4 or 5 or CH2CH(C6H5);
n is 0, 1, 2, 3, 4 and/or 5;
a is an integer from 2 to 350;
R13 is H, an unbranched or branched C1-C4-alkyl group, CO—NH2 and/or COCH3;, in which
R16, R17 and R18 are each independently H or an unbranched or branched C1-C4-alkyl group;
E is an unbranched or branched C1-C6-alkylene group, a cyclohexylene group, CH2-C6H10, 1,2-phenylene, 1,3-phenylene or 1,4-phenylene, or is a chemical bond;
A is CxH2x with x=2, 3, 4 or 5 or CH2CH(C6H5);
L is CxH2x with x=2, 3, 4 or 5 or CH2—CH(C6H5);
a is an integer from 2 to 350;
d is an integer from 1 to 350;
R19 is H or an unbranched or branched C1-C4-alkyl group;
R20 is H or an unbranched or branched C1-C4-alkyl group; and
n is 0, 1, 2, 3, 4 or 5;, in which R21, R22 and R23 are each independently H or an unbranched or branched C1-C4-alkyl group;
W is O, NR25, N
Y is 1 when W=0 or NR25, and is 2 when W=N;
A is CxH2x with x=2, 3, 4 or 5 or CH2CH(C6H5);
a is an integer from 2 to 350;
R24 is H or an unbranched or branched C1-C4-alkyl group;
R25 is H or an unbranched or branched C1-C4-alkyl group;, in which
R6 is H or an unbranched or branched C1-C4-alkyl group;
Q is NR10, N or O;
Y is 1 when Q=O or NR10, and is 2 when Q=N;
R10 is H or an unbranched or branched C1-C4-alkyl group;
A is CxH2x with x=2, 3, 4 or 5, or CH2C(C6H5)H;
R24 is H or an unbranched or branched C1-C4-alkyl group;
M is H or one cation equivalent; and
a is an integer from 2 to 350.