Patent ID: 11884829
Assignee: AGFA NV
Field: Textile and paper machines (Mechanical engineering)
Classification: CPC C  B  D | IPC B  C  D

Claim 0:
1. An aqueous ink comprising,
capsules comprising a polymeric shell surrounding a core, the core comprises one or more chemical reactants capable of forming a reaction product upon application of heat and/or radiation,
wherein, each capsule is obtainable by:
dispersing under high shear a non-aqueous solution in an aqueous solution and adding a polyamine compound having at least three nucleophilic groups to the dispersion,
wherein the non-aqueous solution comprises i) a compound selected from the group consisting of di- or poly-acid chlorides, di- or oligoisocyanates, di- or oligosulfochlorides, di- or oligo-chloroformates, an isocyanate monomer, and mixtures thereof; ii) one or more chemical reactants capable of forming a reaction product upon application of heat and/or radiation; and iii) a water-immiscible solvent having a boiling point below 100° C. at normal pressure,
wherein the aqueous solution comprises a surfactant comprising a quaternary ammonium group and at least one primary or secondary amine to covalently bond the surfactant to the polymeric shell; and

a colorant stabilized by cationic dispersing groups.