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1. (EP2673313) DISPERSANTS
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Claims

1. Compound of formula (1)

wherein:

Zw is an organic radical comprising w amino groups, in which w is a number and 5 ≤ w ≤ 3,000;

A and B are independently oxy-C 1-C20-alkylene carbonyl groups or oxy-C2-C20-alkenylene carbonyl groups derived from hydroxy carboxylic acids or lactones;

T is hydrogen or R-CO-, where R is a C1-C50 hydrocarbyl group;

Y is a C3-C4-alkylene radical linked to an amino group of Zw;

Y' is an ionic salt link between an amino group of Zw and the terminal carbonyl of (A)r-(B)p-T;

r and p are independently numbers between 0 and 50 and r+p>2;

s, m and v are numbers;

0.99w ≤ s+m ≤ 2w;

and 0.3w ≤ s+v ≤ 2w.


  2. Compound according to claim 1 in which the organic radical Z w is the residue of a polyethyleneimine.
  3. Compound according to claim 2 in which the organic radical Z w is the residue of polyethyleneimine having number molecular weight from 500 to 60,000.
  4. Compound according to claim 2 in which Y is -(CH 3)CH-CH 2-
  5. Compound according to claim 1 in which r+p>3.
  6. Compound according to claim 1 in which 0.5w ≤ s+v ≤ w+2.
  7. Compound according to claim 1 in which 0.99w ≤ s+m ≤1.2 w.
  8. Compound according to claim 4 in which v=0.
  9. Compound according to claim 4 in which s=0.
  10. Composition comprising from 5 to 95% by weight of a particulate solid and from 0.5% to 100% by weight based on the particulate solid of a compound according to any of claims from 1 to 9.
  11. Composition according to claim 10 in which the particulate solid is an inorganic pigment.
  12. Composition according to claim 10 in which the particulate solid is a ceramic pigment.
  13. Composition according to claim 12 comprising from 5 to 60% by weight of ceramic pigment, from 2 to 15% by weight of a compound according to claims 1-9 and having viscosity between 5 and 50 mPa *s.
  14. Composition according to claim 13 comprising from 15 to 45% by weight of ceramic pigment, from 4 to 10% by weight of a compound according to claims 1-9 and having viscosity between 8 and 30 mPa *s.