Pigmentary printing paste additive

Claim 1

In a pigmentary printing paste for textile fibers wherein said paste is in the form of an oil-in-water emulsion or semi-emulsion containing a water-soluble synthetic thickening agent which comprises at least 20% of dry material and which is swollen in an aqueous medium by alkaline agents and which results from the polymerization or copolymerization of at least 20% of at least one unsaturated carboxylic acid having 3 or 4 carbon atoms or an anhydride thereof, wherein said paste also contains finely dispersed pigment, binding agent in the form of a copolymer of unsaturated monomers, and an emulsifying agent; the improvement whereby said printing paste contains from 1 to 10% by weight of a liquid additive which is substantially insoluble in water, said additive comprising a nonionic surface-active liquid product which is substantially insoluble in water, and which has a molecular weight of from 1,000 to 20,000 and is the condensation product of propylene oxide or of a mixture of propylene oxide and ethylene oxide containing a greater amount of propylene oxide with a compound having at least one atom of active hydrogen which is selected from the group consisting of monoalcohols comprising methanol, ethanol, propanols, butanols and homologues thereof having less than 20 carbon atoms, polyalcohols comprising glycol, glycerol, pentacrythritol, oses having 5 to 12 carbon atoms, aliphatic mono-acids having 12 to 40 carbon atoms, aliphatic polyacids having 2 to 20 carbon atoms, their esters and ethers, aliphatic monoamines having 1 to 6 carbon atoms, aliphatic polyamines having 1 to 6 carbon atoms and at most 4 amine functions, aminoalcohols, and water.