Magnesium chloride catalyst for modified urea resins

Claim 1

A PROCESS WHICH COMPRISES IMPREGNATING TEXTILE MATERIAL WITH A STABLE, AQUEOUS SOLUTION HAVING A PH BETWEEN 7 AND 10.5, AND CONSISTING ESSENTIALLY OF BETWEEN 2.5 AND ABOUT 30% BY WEIGHT OF AN AGENT SELECTED FROM THE GROUP CONSISTING OF METHYLATED METHYLOL UREA, PARTIALLY POLYMERIZED METHYLATED METHYLOL UREA, METHYLATED AND UNMETHYLATED METHYLOL ETHYLENE UREAS AND METHYLATED AND UNMETHYLATED METHYLOL 1,2-PROPYLENE UREAS, AND A QUANTITY OF MAGNESIUM CHOORIDE AS THE SOLE CATALYSTIC COMPONENT, AMOUNTING TO BETWEEN ABOUT 2 AND ABOUT 25% OF THE WEIGHT OF SAID AGENT, AND A SMALL AMOUNT OF A COMPATIBLE ALKALINE MTERIAL SUFFICIENT TO PROVIDE SUCH ALKALINITY AND CORRESPONDING TO AN AMOUNT UP TO ABOUT 1% OF MAGNESIUM OXIDE, BASED ON THE TOTAL WEIGHT OF ANHYDROUS MAGNESIUM CHLORIDE, IN SUFFICIENT AMOUNT TO DEPOSIT THEREON BETWEEN ABOUT 20 AND 25% OF SAID AGENT, BASED ON THE WEIGHT OF THE DRIED TEXTILE MATERIAL, DRYING THE IMPREGNATED TEXTILE MATERIAL AT LEAST PARTIALLY, PRESSING THE IMPREGNATED MATERIAL MORE THAN 24 HOURS AFTER THE IMPREGNATING OPERATION AND WHILE THE MOISTURE CONTENT IS BETWEEN ABOUT 5 AND 20%, BASED ON TEH WEIGHT OF THE DRIED TEXTILE MATERIAL, AND CURING THE MATERIAL BY EXPOSURE TO A TEMPERATURE OF ABOVE ABOUT 275*F. AND BELOW THE TEMPERATURE AT WHICH DEGRADATION OF THE TEXTILE MATERIAL COMMENCES FOR A PERIOD SUFFICIE%NT TO CONVERT THE AGENT TO THE WATER-INSOLUBLE STATE, WHEREBY A MATERIAL OF SUBSTANTIALLY PERMANENT WRINKLE RESISTANCE AND SHRINKAGE RESISTANCE IS OBTAINED.