| 摘要 |
<p>The enamels disclosed contain binders consisting of a combination of: (I) 20 to 70% of a water-dilutable polyurethane resin having and acid number of 15-35 ; (II) 20 to 70% of an epoxide resin modified water-dilutable polyester which can be produced by reacting a polyester (A) having a molecular weight (numerical average) less than 2000, an acid number of 35-240 and an OH number of 56-320 with 0.3 et 1.5 equivalents per polyester molecule of a bisphenol-based epoxide resin (B) having an epoxyde equivalent weight of 170 to 1000 and/or with a derivative (C) of said epoxide resin containing at least one epoxide group per molecule under reaction conditions in which essentially only carbonyl groups react with epoxide groups; and (III) 0 to 20% of a water-dilutable aminoplastic resin, the sum of the components (I) to (III) being equal to 100%.</p> |
