C - Chemistry – Metallurgy – 09 – D
Patent
C - Chemistry, Metallurgy
09
D
C09D 175/04 (2006.01) C08G 18/08 (2006.01) C08G 18/40 (2006.01) C08G 18/42 (2006.01) C08G 18/70 (2006.01) C08G 18/78 (2006.01)
Patent
CA 2121700
Aqueous coating agents, the binder of which consists essentially of a combination of: (a1) a water-dilutable polycondensa- tion resin having hydroxyl groups and without urethane and sulphonate groups, with a molecular weight Mn of over 500; or (a2) a mixture of such a polycondensation resin with up to 100 % wt, in relation to the weight of the polycondensation resin of at least one water-dilutable polymerisation resin with a molecular weight Mn of over 500 and having hydroxyl groups, in aqueous solu- tion or dispersion, and a polyisocyanate component (b) emulsified therein with a viscosity at 23 °C of 50-10,000 mPa.s; a process for producing coating agents by emulsifying a polyisocyanate component (b) in an aqueous solution or dispersion of a polyol- component (a1) or (a2), in which any auxiliaries and additives are incorporated into the system before the addition of the isocya- nate, and the use of the coating agents for applying coatings.
Backer Lothar
Dhein Rolf
Kubitza Werner
Probst Joachim
Rettig Rainer
Aktiengesellschaft Bayer
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
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