초록 ▼

in the presence of primary or secondary alcohols, at temperatures under 150.degree. C., and at pressures ranging between atmospheric pressure and 20 atm pressure, to form a functionalized aminoplast compound, wherein at least one and up to (y-1) of the amino substituents on the aminoplast are substi

in the presence of primary or secondary alcohols, at temperatures under 150.degree. C., and at pressures ranging between atmospheric pressure and 20 atm pressure, to form a functionalized aminoplast compound, wherein at least one and up to (y-1) of the amino substituents on the aminoplast are substituted with the carbamate functionality.

대표청구항 ▼

[ We claim:] [1.] A method for reducing molecular weight growth of aminoplast compounds comprising reacting(a) an aminoplast compound, having a total number (y) of reactive substituents on the amino nitrogens of the aminoplast, where y=(E.times.M) and E=equivalents of reactive substituents per mole

[ We claim:] [1.] A method for reducing molecular weight growth of aminoplast compounds comprising reacting(a) an aminoplast compound, having a total number (y) of reactive substituents on the amino nitrogens of the aminoplast, where y=(E.times.M) and E=equivalents of reactive substituents per mole of aminoplast and M=total number of moles of aminoplast, wherein the reactive substituents are selected from the group consisting of --NH, alkylol, alkoxy, alkoxyalkyl, and mixtures thereof and(b) at least one carbamate compound selected from the group consisting of unsubstituted and substituted primary carbamate compounds, unsubstituted and substituted secondary carbamate compounds and mixtures thereof, wherein the carbamate is substituted with functionality selected from the group consisting of ethylenic unsaturation, hydroxy, amino and isocyanate functionality, the presence of primary or secondary alcohols, at temperatures under 150.degree. C., and at pressures ranging between atmospheric pressure and 20 atm pressure, to form a modified aminoplast compound, wherein at least one equivalent and up to E-1/E of the total number of reactive substituents on the aminoplast nitrogens are substituted with carbamate functionality, and the carbamate functionality on the melamine is either not involved in a crosslinking reaction, or reacts at a higher temperature than the temperature at which the methyol and/or methylalkoxy substituents react.