Nonionic polyurethane thickener with surfactant cothickener and organic diluent, clear concentrates, aqueous print pastes, coloring compositions, methods of making and printing

Claim 1

A clear concentrate composition for use in print pastes, comprising a mixture of about 5-50% by weight of (1) a primary thickener comprising a nonionic water soluble or water solulizable polyurethane, (2) a surfactant cothickener different from (1), in an amount providing a weight ratio of (1) to (2) of about 1:0.01 to about 1:10, (3) about 5-35% by weight of a non-aqueous, inert organic diluent, and (4) 0 to about 65% by weight of water, said polyurethane having a molecular weight of at least 10,000 and at least three hydrophobic branching groups, the hydrophobic groups containing a total of at least 20 carbon atoms and being linked through hydrophilic polyether segments of at least 1500 molecular weight each; wherein the polyurethane thickener is selected from the following reaction products wherein reactant (a) is at least one water soluble polyether polyol containing at least three hydroxyl groups, reactant (b) is at least one water insoluble organic diisocyanate, reactant (c) is at least one water insoluble organic polyisocyanate containing at least three isocyanate groups, reactant (d) is at least one hydrophobic organic monofunctional active hydrogen compound, reactant (e) is at least one hydrophobic organic monoisocyanate, and reactant (f) is at least one polyhydric alcohol or polyhydric alcohol ether containing three or more hydroxyl groups: (I) reaction products of reactant (a) and (e), (II) reaction products of reactants (a), (c) and (d), (III) reaction products of reactants (a), (b), (d) and (f), (IV) reaction products of reactants (a), (b), (e) and (f), (V) reaction products of reactants (a), (b), (c) and (d), (VI) reaction products of reactants (b), (e) and (f), (VII) reaction products of reactants (a), (c) and (e), (VIII) reaction products of reactants (b), (d) and (f).