Film forming aqueous colloidal dispersions containing nitrogenous condensation products and process for preparing same

Claim 1

AN AQUEOUS COLLOIDAL DISPERSION COMPRISING (1) A SYNTHETIC LATEX CONTAINING IN THE DISPERSE PHASE A POLYMER OBTAINED BY POLYMERIZING AN OLEFINICALLY UNSATURATED MONOMER CONTAINING IN ITS STRUCTURE AT LEAST ONE ETHYLENIC GROUP HAVING THE CH2=CH- LINKAGE, WHEREIN SAID ETHYLENIC GROUP IS JOINED TO AN ATOM SELECTED FROM THE GROUP CONSISTING OF CARBON AND OXYGEN AND (2) FROM ABOUT 0.3 TO 5 PERCENT BY WEIGHT BASED ON THE WEIGHT OF SOLIDS PRESENT IN SYNTHETIC LATEX OF A WATER-SOLUBLE CONDENSATION PRODUCT OBTAINED BY THE REACTION OF FROM ABOUT 1 TO 3 MOLAR PROPORTIONS OF FORMALDEHYDE WITH ONE MOLAR PROPORTION OF A LOWER MOLECULAR WEIGHT ALIPHATIC ALKANOLAMINE, SAID ALKANOLAMINE EMBODYING A STRAIGHT CHAIN STRUCTURE OF AT LEAST 3 ATOMS OF THE GROUP CONSISTING OF CARBON AND NITROGEN, THE NITROGEN IN SAID STRUCTURE BEING ATTACHED ONLY TO CARBON AND HYDROGEN, AND INCLUDING IN THE MOLECULE A HYDROXYL RADICAL AND FROM 1 TO 2 AMINO RADICALS WHEREIN AT LEAST ONE AMINO RADICAL IS A PRIMARY AMINO GROUP, AND WHEREIN SAID CONDENSATION PRODUCT IS OBTAINED IN A REACTION CARRIED OUT WHILE MAINTAINING THE TEMPERATURE OF THE REACTION MIXTURE BELOW ABOUT 60*C.