| 摘要 |
1,161,352. Coated sheet metal. BECK KOLLER & CO. (ENGLAND) Ltd. 16 March, : 1967 [28 March, 1966 (5)], No. 12311/67. Heading B2K [Also in Division C3] Sheet metal, particularly phosphatised sheet metal, glass, ceramics, plastics or leather, are coated with a composition comprising an organic binder prepared by beating a copolymer obtained by free-radical solution polymerisation of a monomer mixture comprising not more than 20 mole per cent of an a, #- ethylenically unsaturated dicarboxylic acid anhydride and at least two other ethylenically unsaturated compounds with a polyol containing from three to six hydroxy groups, the reaction being carried out until an acid number of 5 to 60 and a hydroxyl number of 20 to 120 is obtained, and an aminoplast resin comprising a urea-aldehyde aminotriazinealdehyde or, phenol-formaldehyde resin. |
