Amine dispersants
AssigneeAvecia Limited
InventorsDavid Melville Fawkes, Dean Thetford
Life of this patent
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Abstract
An amine dispersant containing one or more amino and/or imino groups, a poly(oxy-C1-6-alkylene carbonyl) chain (POAC chain) obtainable from two or more different linear hydroxycarboxylic acids or lactones thereof and a residue of an ethylenically unsaturated group wherein the amino and/or imino groups are attached via the ethylenically unsaturated group. The POAC chain may be made from 2-hydroxyethylacrylate, ε-caprolactone and δ-valerolactone and the amine and/or imino groups may be provided by polyethyleneimine.
Claims18
An amine dispersant containing one or more amino and/or imino groups, a poly(oxy-C1-6-alkylene carbonyl) chain (POAC chain) obtained from two or more different linear hydroxycarboxylic acids or lactones thereof and a residue of an ethylenically unsaturated group wherein the amino and/or imino group is attached via the ethylenically unsaturated group, including salts thereof.
A compound of formula 7
- wherein
- (CO—V—O) represents a POAC chain obtained from two or more different linear hydroxy-C1-6-alkylene carboxylic acids or lactones thereof;
- R is C1-4-alkyl;
- R1 is an aliphatic or aromatic residue containing up to 10 carbon atoms;
- and m is from 2 to 200.
Dependencies are inferred from the claim text.