Patent ID: 6864344

Claim:
A storage-stable sulfonated condensation product based on an amino resin former having at least two amino groups, at least one of sulfite and naphthalenesulfonic acid; and formaldehyde and, optionally organic nitrogen bases, comprising: at least one nitrogen-containing formulation auxiliary selected from the group consisting of a compound of formula (1) R 1 —NH—X—Y—R 2 (1) wherein R 1 and R 2 are independently H, —CH 3 , —C 2 H 5 , —C 3 H 7 or together form —CH 2 ) n —CH 2 —; X is —CH 2 , CO, or CS; Y is S, NH, or —(CH 2 ) m ; — n is 0 to 9 m is 1 to 4; and a compounds of formula (II) wherein Z is —OCH 3 , —SO 3 H, —SO 3 − M + , —NO 2 , —NH 2 , —NH—NH 2 , —CO 2 − M + , —CHO, or H M is a cation; wherein the molar ratio of amino resin former: formaldehyde: sulfite: nitrogen-containing formulation auxiliary is 1:1.9-6.0:1.0-2.0:0.01-1.5 and/or the molar ratio of naphthalene-sulfonic acid: formaldehyde: nitrogen-containing formulation auxiliary is 1:0.7-3.0:0.01-1.5.