| 摘要 |
Sulphonamide compounds of the formula <IMAGE> are prepared by condensation of sulphonamides of the formula R1-SO2-NH2-m-pR2m(-CH2OH)p with formaldehyde and diols or diol monoethers of the formula <IMAGE> in a molar ratio of sulphonamide: formaldehyde: diol or diol monether of 1:(1-p):0.5 to 1:(4-p):6 in the presence of a catalyst which splits off water and at temperatures of 80 DEG to 250 DEG C., wherein R1 is phenyl, phenyl substituted phenyl, or alkyl substituted phenyl having 1 to 4 alkyl carbon atoms, R2 is alkyl having 1 to 4 carbon atoms, R3 is hydrogen or alkyl having 1 to 4 carbon atoms, R4 is hydrogen or alkyl having 1 to 18 carbon atoms, R5 is hydrogen, R2, <IMAGE> <IMAGE> <IMAGE> or <IMAGE> R6 is R4 or <IMAGE> m is zero or one, p is zero, one or two with the sum of m and p ranging from 0 to 2, and n is a number from 2 to 19 q is one, two or three and the compounds so obtained are used as modifying agents for melamine resins.
|
