Polyamidoamine dispersants

A pigment dispersant obtained by reacting amine-rich moieties C with at least one polymer P, said polymer P having one or more amine reactive groups,

• wherein said amine-rich moieties C have an amine density of at least 600 mg KOH/g and said amine-rich moieties C are obtainable from repetitive self-reaction of at least one type of substance B and from cross-reaction of at least one B with at least one substance A, wherein the reaction temperature should remain below 230° C.,
• wherein the at least one B is an adduct of the at least one substance A and at least one linker D, and B contains 1-15 amine-reactive groups and 4-15 in total number of primary, secondary, tertiary and quaternary amines,
• wherein the at least one substance A is a branched and/or linear aliphatic and/or cycloaliphatic or aromatic polyamine containing 4-15 total number of primary, secondary, tertiary and quaternary amines,
• wherein the at least one linker D is an acrylate, a maleate/fumarate mono-ester or a maleate/fumarate di-ester containing 1-15 amine-reactive groups, or a mixture thereof;
• wherein the amine-reactive groups in B and D are reacted with reactive amines in B and/or A, and if B has only one amine reactive group then additional D and/or mixture of B and A is reacted to a previously formed C,
• and wherein such additional reaction of D and/or mixture of B and A to a formed C is repeated for 1 to 10 times.