| 摘要 |
An aqueous coating composition containing a water-dilutable (water-thinnable) binder mixture of I. from 50 to 88% by weight of a neutralised, water-soluble product of the reaction of (A) from 10 to 80% by weight of a polyurethane resin having an acid number of from 70 to 160, containing at least one terminal, blocked isocyanate group, and which is free from free hydroxyl groups and fatty acid radicals having more than 12 carbon atoms, and having a limiting viscosity index of from 6.5 to 12.0 ml/g, measured in DMF at 20 DEG C, and (B) from 20 to 90% by weight of a polyester resin having an OH number of from 50 to 500, an acid number of less than 20, a limiting viscosity index of from 8.0 to 13.0 ml/g, measured in DMF at 20 DEG C where the reaction product has a limiting viscosity index of from 13.5 to 18.0 ml/g, measured in DMF at 20 DEG C, II. from 10 to 40% by weight of one or more non-water-dilutable, blocked polyisocyanates, and III. from 2 to 30% by weight of at least one amino resin as further crosslinking agent. |
