| abstract |
[PROBLEMS] To provide a method for lowering the molecular weight of an aminoplast compound, an aminoplast compound obtained by the method, and a coating composition containing the aminoplast compound. The low molecular weight aminoplast has (a) a reactive substituent on the amino nitrogen of the aminoplast, and the reactive substituent is -NH, alkylol, alkoxy, alkoxyalkyl, and the like. An aminoplast compound selected from a mixture, and (b) at least one carbamate compound selected from the group consisting of a primary carbamate compound, a secondary carbamate compound, and a mixture thereof; The reaction is carried out in the presence of a primary or secondary alcohol at a temperature of less than 150 ° C. and a pressure of from atmospheric to 20 atm, replacing the amino substituent on the aminoplast with a carbamate function. By forming an aminoplast compound. |