Treatment of cellulosic textile materials and products thereof

Claim 1

THE PROCESS OF IMPROVING THE PROPERTIES OF A CELLULOSIC TEXTILE MATERIAL WHICH COMPRISES IMPREGNATING THE SAID TEXTILE MATERIAL WITH A COMBINATION OF (1) A CURABLE PRODUCT OF PARTIAL REACTION OF INGREDIENTS COMPRISNG MELAMINE AND FORMALDEHYDE, SAID PRODUCT BEING AT LEAST PARTLY SOLUBLE IN WATER, AND (2) A FILM-FORMING SUBSTANCE CONSISTING ESSENTIALLY OF A SUBSTANTIALLY WATERINSOLUBLE, THERMOPLASTIC PRODUCT OF POLYMERIZATION OF POLYMERIZABLE MONOMERS, SAID POLYMERIZABLE MONOMERS CONSISTING OF, BY WEIGHT, FROM 50% TO 100% OF A LOWER ALKYL ACRYLATE AND UP TO 50% OF A DIFFERENT MONOMERIC COMPOUND CONTAINING A CH2=C< GROUPING AND WHICH IS COPOLYMERIZABLE WITH SAID ACRYLATE, THE PRODUCTS OF (1) AND (2) BEING EMPLOYED IN A WEIGHT RATIO CORRESPONDING TO FROM 1 TO 3 PARTS OF THE LATTER FOR EACH PART OF THE FORMER, AND CURING IN SITU THE PARTIAL REACTION PRODUCT OF (1) IN INTIMATE CONTACT WITH THE POLYMERIZATION PRODUCT OF (2) TO A SUBSTANTIALLY WATER-INSOLUBLE STATE, THE AMOUNT OF THE PRODUCTS OF (1) AND (2) APPLIED TO THE SAID TEXTILE MATERIAL BEING SUCH THAT THE FINISHED TEXTILE CONTAINS FROM 8 TO 40%, BY WEIGHT OF THE DRY TEXTILE, OF A SUBSTANTIALLY WASHFAST IMPREGNANT CONSISTING OF THE PRODUCT OF (1) IN CURED STATE AND THE PRODUCT OF (2).