Deposition of tacky impregnating agents on cellulosic fibers

Claim 1

IN A METHOD OF MAKING AN IMPREGNAATED CELLULOSIC PRODUCT WHEREIN AN AQUEOUS SUSPENSION OF FIBROUS CELLULOSIC MATERIAL IS PREPARED, A HYDROPHILIC CATIONIC RESIN IS ADDED TO SAID SUSPENSION, SAID SUSPENSION IS AGED UNTIL ADSORPTION OF SAID RESIN BY SAID FIBERS IS SUBSTANTIALLY COMPLETE, AN AQUEOUS DISPERSION OF A WATER-INSOLUBLE HYDROPHOBIC ORGANIC IMPREGNATING AGENT IN A TACKY STAGE CONTAINING A WATER-SOLUBLE SOAP AS PRINCIPAL DISPERSING AGENT IS ADDED TO SAID SUSPENSION, THE WEIGHT OF IMPREGNATING AGENT IN SAID DISPERSION BEING 25% AND 100% OF THE WEIGHT OF SAID FIBROUS MATERIAL, AND PARTICLES OF SAID IMPREGNATING AGENT ARE DEPOSITED FROM SAID DISPERSION UNIFORMLY ON SAID FIBERS BY THE ACTION OF SAID ADSORBED CATTIONIC RESIN: THE STEPS OF ADDING TO SAID DISPERSION OF SAID IMPREGNATING AGENT SUFFICIENT OF A STABILIZING MIXTURE CONTAINING ABOUT 55% TO 80% BY WEIGHT OF A NON-INIONIC DISPERSING AGENT AND 20% TO 45% BY WEIGHT OF AN ANIONIC DISPERSING AGENT SELECTED FROM THE GROUP CONSISTING OF THE ALUM-STABLE SULFONATE AND THE ALUMSTABLE SULFATE DISPERSING AGENTS TO RENDER SAID EMULSION STABLE IN THE PRESENCE OF ABOUT 5% OF ALUM, BASED ON THE WEIGHT OF IMPREGNANT IN SAID DISPERSION, AND THEN DEPOSITING PARTICLES OF SAID IMPREGNATING AGENT ON SAID FIBERS IN THE PRESENCE OF AT LEAST ABOUT 1/6 MOL OF ALUM BASED ON THE MOLS OF THE SOAP IN SAID DISPERSION.