| 摘要 |
<p>Curable compositions, suitable for use as surface coatings, comprise (i) 100 parts by weight, calculated on its resin-forming solids content, of an ammonium or amine salt of a carboxyl-containing polyester which contains, on average, at least two mercaptan groups directly attached to aliphatic carbon atoms per molecule and at least one aliphatic group of 8 or more carbon atoms, (ii) from 5 to 100 parts by weight, calculated on its resinforming solids content, of a water-soluble aminoplast containing, per average molecule, directly attached to an amido nitrogen atom or atoms of urea or of a polyamino-1,3,5-triazine, at least two groups of formula -CH2OR, where R denotes a hydrogen atom or a methyl or ethyl group, and (iii) water.</p> |
