Modified methylated melamineformaldehyde compositions

Claim 1

A PROCESS OF MODIFYING AQUEOUS COMPOSITIONS COMPRISING A METHYLATED MELAMINE-FORMALDEHYDE CONDENSATION PRODUCT WHICH COMPRISES FORMING A MIXTURE OF (1) AN ALKALINE AQUEOUS SOLUTION OF A METHYLATED METHYLOL MELAMINE CONDENSATION PRODUCT CONTAINING 2 TO 5 MOLS OF COMBINED FORMALDEHYDE AND 1 TO 3.5 MOLS OF COMBINED METHANOL PER MOL OF MELAMINE, SAID SOLUTION HAVING A SALT TITER, AS DEFINED IN THE EIGHTEENTH PARAGRAPH OF THE FOREGOING SPECIFICATION, AT 6% BY WEIGHT SOLIDS BETWEEN 50 AND 90, A PH BETWEEN 8 AND 11, A SOLIDS CONTENT OF 10 TO 85% BY WEIGHT, BEING INFINITELY DILUTABLE WITH WATER WITHOUT PRECIPITATION OF SAID CONDENSATION PRODUCT AND CONTAINING FREE FORMALDEHYDE, AND (2) A NITROGEN-CONTAINING COMPOUND SELECTED FROM THE GROUP CONSISTING OF AMMONIUM HYDROXIDE, UREA, THIOUREA, MONOETHANOLAMINE, DIETHANOLAMINE, WATER-SOLUBLE ALKYLENE POLY-PRIMARY AMINES AND WATER-SOLUBLE ALKYL PRIMARY AND SECONDARY MONOAMINES CONTAINING 3 TO 6 CARBON ATOMS, SAID NITROGEN COMPOUND BEING EMPLOYED IN AN AMOUNT SUFFICIENT TO REACT WITH ALL OF THE FREE FORMALDEHYDE IN SAID SOLUTION, HEATING SAID MIXTURE TO A TEMPERATURE BETWEEN 70 AND 130* C. UNTIL THE SOLUTION HAS A SALT TITER, AS DEFINED IN THE EIGHTEENTH PARAGRAPH OF THE FOREGOING SPECIFICATION, AT 6% BY WEIGHT SOLIDS BETWEEN 5 AND 20 WHILE MAINTAINING THE PH OF THE SOLUTION ABOVE 8, SAID HEATING BEING CARRIED OUT WHEN AT 70 TO 90* C. FOR ABOUT 12 TO 5 HOURS,WHEN AT 90 TO 105* C. FOR BETWEEN 5 AND 1 HOURS AND WHEN AT 105 TO 130* C. FOR 1 HOUR TO 20 MINUTES, AND THEN COOLING SAID SOLUTION.