C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
C08G 18/66 (2006.01) C08G 18/30 (2006.01) C08G 18/32 (2006.01) C08G 18/48 (2006.01) C08G 18/50 (2006.01) C08G 18/71 (2006.01) C08G 18/75 (2006.01) C09D 175/08 (2006.01) C09J 175/08 (2006.01)
Patent
CA 2374870
The invention relates to a water-soluble or water-dispersible polyurethane which is the reaction product of A) at least one polyether polyol a1) having an average functionality of >= 3 and at least one urethane group-containing polyether polyol a2) having an average functionality of >= 4, B) at least one monoalcohol with 6 to 22 carbon atoms, C) at least one (cyclo)aliphatic and/or aromatic diisocyanate D) at least one oxime, monoamine and/or diamine with 2 to 18 carbon atoms, E) optionally at least one monoisocyanate with 4 to 18 carbon atoms, and F) optionally at least one polyisocyanate having an average functionality of > 2 wherein the starting NCO/OH equivalent ratio is between 0.5:1 to 1.2:1 having a particularly efficient thickening effect in the high-shear range, as well as their use for the thickening of aqueous systems.
Manshausen Peter
Mazanek Jan
Sauer Frank
Wamprecht Christian
Aktiengesellschaft Bayer
Borchers Gmbh
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
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