Process for advancing highly methylated methylolguanamines with triazines ureas or biscarbamates

Claim 1

A process for the preparation of an advanced methylated, methylolguanamine resin which comprises reacting, at a pH of from 2.5 to 7, of (a) a methylated, methylolguanamine of the formula I ##STR7## where R represents an alkyl group of 1 to 16 carbon atoms, a phenyl group, or a group of the formula II ##STR8## each R 1 represents a hydrogen atom or a methyl group with the proviso that, on average, at least 70% of the total number of groups R 1 on the methylated methylolguanamine of formula I are methyl groups, and R 2 represents an alkylene group of from 2 to 16 carbon atoms or a phenylene group, with (b) an advancement agent of formula III R.sup.4 --NH--R.sup.3 --NH--R.sup.5 III where (1) R 3 represents a carbonyl group, and R 4 and R 5 each both represent a hydrogen atom or together represent an alkylene hydrocarbon chain having from 2 to 4 carbon atoms, or a group ##STR9## or (2) R 3 represents a residue of formula --COO--R.sup.6 --OCO-- IV or ##STR10## where R 6 represents an alkylene group of 2 to 20 carbon atoms or an arylene group of 6 to 12 carbon atoms, R 7 represents an alkyl group of 1 to 16 carbon atoms, a phenyl group, or a group --NH 2 , and R 4 and R 5 both each represent a hydrogen atom; wherein 0.1 to 1 mole of component (b) is used per each gram equivalent of guanamine residue in component (a).