Abstract: A process for the preparation of amphoteric resinous aqueous emulsions useful for the treatment of fiber-containing products, comprising reacting an isocyanate-terminated urethane prepolymer with an excess of a polyalkylene polyamine to form a polyurethane-urea-polyamine, then partially reacting the amino groups in the polyurethane-urea-polyamine with a compound selected from the group consisting of alkyl isocyanates in which the alkyl group has 12 to 22 carbon atoms and alpha-olefin epoxides having 12 to 22 carbon atoms, thereby to introduce a long-chain alkyl group into the molecule, reacting the thus-formed product having some unreacted amino groups with a member selected from the group consisting of 1,3-propanesultone, 1,4-butanesultone, .beta.-propiolactone, .epsilon.-caprolactone and .delta.-valerolactone, thereby to render the polymer amphoteric, and mixing the resulting polymer with water.

Abstract: A process for the preparation of anionic resinous aqueous emulsions useful for the treatment of fiber-containing products, comprising reacting an isocyanate-terminated urethane prepolymer with an excess of a polyalkylene polyamine to form a polyurethane-urea-polyamine, then reacting a part of the amino groups in the polyurethane-urea-polyamine with a compound selected from the group consisting of alkyl isocyanates in which the alkyl group has 12 to 22 carbon atoms and alpha-olefin epoxides having 12 to 22 carbon atoms, thereby to introduce a long-chain alkyl group into the molecule, reacting the thus-formed product having some unreacted amino groups with a cyclic dicarboxylic acid anhydride, and mixing the resulting reaction product with an aqueous solution of a basic substance.

Abstract: A process for the preparation of thermosetting resin emulsions, which comprises (1) reacting an isocyanate-terminated urethane prepolymer with an excess of a polyalkylene-polyamine to form a polyurethane-urea-polyamine, (2) reacting the thus-formed polyurethane-urea-polyamine with an epihalohydrin, (3) rendering the resulting reaction product amphoteric by reacting said reaction product with (a) a compound selected from the group consisting of 1,3-propane sultone, 1,4-butane sultone, .beta.-propiolactone, .epsilon.-caprolactone, .delta.-valerolactone and sodium monohalogenocarboxylates having the formula X(CH.sub.2).sub.

Abstract: A process for the preparation of anionic thermosetting resin emulsions, comprising the steps of (1) reacting an isocyanate-terminated urethane prepolymer with an excess of a polyalkylene-polyamine to form a polyurethane-urea-polyamine, (2) then reacting the thus-formed polyurethane-urea-polyamine with an epihalohydrin, (3) reacting the resulting reaction product of step (3) with a cyclic dicarboxylic acid anhydride, and then (4) mixing the resulting reaction product of step (3) with an aqueous solution of a basic substance to form an emulsion.

Abstract: A process for preparing non-ionic polyurethane emulsions comprising chain-extending (A) an isocyanate-terminated urethane prepolymer (formed by reaction of a polyhydroxyl reactant having a molecular weight of 200 to 10,000 and a stoichiometric excess of a polyisocyanate), with (B) a polyalkylene polyamine as chain extending compound, thereby to form a polyurethane-urea polyamine product, mixing the said polyamine product with water or reacting the product with a cyclic dicarboxylic acid anhydride and then mixing the reaction product with water; said process being characterized in that a water-soluble polyoxyethylene glycol comprises 15 to 80% by weight of the polyhydroxyl reactant, and the said polyalkylene polyamine used as the chain-extending compound has at least two primary or secondary amino groups and a function group having the formula --CH(OH)--CH.sub.2 X in which X is Cl or Br.