Patent ID: 6410617
Filing Date: 2002-06-25
Classification: C08G,C08L

Abstract:
A process for producing self-dispersing, curable, epoxy resins, the process comprising:(i) reacting (a) one or more &agr;,&bgr;-unsaturated carboxylic acid esters of the general formula (I), R2R3C&boxH;C(R4)COOR1â€ƒâ€ƒ(I), â€ƒwith (b) one or more aminopolyalkylene oxide compounds having at least one aminonitrogen atom with one or more reactive hydrogen atoms, wherein R1 represents a hydrocarbon radical having up to 15 carbon atoms, wherein R2, R3, and R4 each independently represents a substituent selected from the group consisting of hydrogen, hydrocarbon radicals having up to 20 carbon atoms, and â€”(CH2)nâ€”COOR1, wherein R1 is as defined above and n represents a number of from 0 to 10, and wherein (a) and (b) are present in quantities such that the equivalent ratio of the reactive hydrogen atoms in (b) to the &agr;,&bgr;C&boxH;C double bonds in (a) is from 10:1 to 1:10, to form an intermediate product Z1 having a number of ester groups; (ii) reacting the intermediate product Z1 with (c) one or more polyhydroxy compounds having a number of hydroxy groups, wherein the intermediate product Z1 and the one or more polyhydroxy compounds are present in quantities such that the equivalent ratio of the ester groups to the hydroxy groups is from 1:1.1 to 1:10, to form an intermediate product Z2 having a number of hydroxyl groups; and (iii) reacting the intermediate product Z2 with (d) one or more polyepoxides having a number of oxirane rings, wherein the intermediate product Z2 and the one or more polyepoxides are present in quantities such that the equivalent ratio of the oxirane rings to the hydroxyl groups is from 1.5:1 to 6:1.