Aqueous dispersions of cationic film-forming polyurethanes

Details Aqueous dispersions of cationic film-forming polyurethanes Aqueous dispersions of cationic film-forming polyurethanes

C - Chemistry, Metallurgy

08

G

C08G 18/08 (2006.01) A61K 8/04 (2006.01) A61Q 5/06 (2006.01) C08G 18/12 (2006.01) C08G 18/32 (2006.01) C08G 18/42 (2006.01) C08G 18/48 (2006.01) C08G 18/66 (2006.01) C08G 18/72 (2006.01)

Patent

CA 2722024

Stable aqueous dispersions of film-forming cationic polyurethanes are prepared by extending with water or amines a cationic prepolymer obtained from aliphatic diisocyanates, aliphatic tertiary amines having two hydroxyl groups that react with - NCO groups, linear polyols and methanesulfonic acid.

L'invention porte sur des dispersions aqueuses stables de polyuréthanes cationiques filmogènes préparées par allongement avec de l'eau ou des amines d'un prépolymère cationique obtenu à partir de diisocyanates aliphatiques, d'amines tertiaires aliphatiques ayant deux groupes hydroxyles qui réagissent avec les groupes NCO, de polyols linéaires et d'acide méthanesulfonique.

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