| 摘要 |
<p>1316898 Electro-phoretic deposition BAYER A G 3 Aug 1971 [4 Aug 1970] 36419/71 Heading C7B [Also in Division C3] An aqueous electro-deposition lacquer comprises a neutralized polymeric product of 5-70 per cent wt. of an unsaturated fatty acid ester, 5-20 per cent wt. of maleic anhydride and 90-10 per cent wt. of polybutadiene oil having a viscosity of 3-100 poise at 20‹C., containing a co-condensed oil-reactive phenolic resin. The preferred polybutadiene oils having iodine numbers of 300-500 and include known, optionally modified, polybutadienes with central cis-and trans-double bonds and also vinyl double bonds. Preferred esters are those of higher unsaturated fatty acids and dihydric or polyhydric aliphatic alcohols, natural unsaturated oils such as soya oil, linseed oil, caster oil, groundnut oil and tall oil. The phenolic resins include those of phenols and HCHO, their etherification products with alcohols, the reaction product of a phenol and a natural resin and preferably the reaction product of an alkylphenol and a xylene-HCHO resin.</p> |
