Polyurethane thickeners for aqueous systems

Details Polyurethane thickeners for aqueous systems Polyurethane thickeners for aqueous systems

C - Chemistry, Metallurgy

08

G

C08G 18/48 (2006.01) C08G 18/28 (2006.01) C08G 18/32 (2006.01) C08L 71/02 (2006.01) C09D 7/00 (2006.01) C09D 175/04 (2006.01) C08L 75/04 (2006.01)

Patent

CA 2438257

The invention provides thickeners for inks and coating materials, comprising polyurethanes, water, viscosity regulators, and, if desired, organic solvents, wherein said viscosity regulators comprise compounds of the general formula (I) R1-O-(SO)a-(EO)b-(PO)c-(BO)d-(DTO)e-R2 in which R1 and R2 independently of one another are one of the radicals from the group consisting of hydrogen, an aliphatic or cycloaliphatic hydrocarbon radical which optionally is substituted and/or contains multiple bonds and/or contains heteroatoms, an aromatic radical which optionally is substituted and/or contains heteroatoms, an acyl radical, a carboxyacyl radical, and a carboxyalkyl radical, SO = styrene oxide radical, EO = ethylene oxide radical, PO = propylene oxide radical, BO = butylene oxide radical, and DTO - dodecene oxide and/or tetradecene oxide (as the individual substance or as a mixture), a = 1 to 5, b = 3 to 30, c = 0 to 5, d = 0 to 5, e = 0 to 5 where (a + c + d + e) < = b.

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