Patent ID: 8476189

Claim:
A process to make a crosslinking composition comprising the steps of a) preparing a crosslinker monomer mixture by reacting amines and glycidyl compounds selected from, (i) saturated amines and/or saturated polyamines with ethylenically unsaturated glycidyl and/or ethylenically unsaturated polyglycidyl compounds, or (ii) ethylenically unsaturated amines and/or ethylenically unsaturated polyamines with saturated glycidyl compounds and/or saturated polyglycidyl compounds, or (iii) ethylenically unsaturated amines and/or ethylenically unsaturated polyamines with ethylenically unsaturated glycidyl compounds and/or ethylenically unsaturated polyglycidyl compounds; wherein the amount of the amines and glycidyl compounds includes a stoichiometric excess of amines/unreacted amino functions wherein the amount of the glycidyl groups is from 75% to 98% of the molar amount of the NH-functions, and the internal crosslinker composition has a residual amount of glycidyl compounds of less than about 500 ppm based on the mass of the internal crosslinker composition as determined by the Glycidyl Compound in Amine-Glycidyl Compound Reaction Products Test set forth herein.