| 摘要 |
<p>Coating compositions particularly suited to the manufacture of the base coat of two-layer varnishes of the base coat/clear coat type contain organic solvents, at least one synthetic resin containing urethane and urea groups, possibly other synthetic resins, pigments and other ordinary additives. These coating compositions are characterized in that they contain at least one synthetic resin which contains urethane and urea groups obtained by converting a1) a compound containing hydroxyl groups capable of reacting with isocyanate groups and a2) an aliphatic and/or cycloaliphatic diisocyanate to a prepolymer (A) containing isocyanate groups and then converting at least some of the isocyanate groups of prepolymer (A) with a3) at least an additive containing an active amine hydrogen atom produced from a (meth)acrylic acid ester, preferably acrylic acid ester, and at least one aliphatic or cycloaliphatic compound containing two amine hydrogen atoms.</p> |
