| 摘要 |
<p>1535888 Aerobic polymerizable compositions MITSUBISHI RAYON CO Ltd 15 April 1977 [19 April 1976] 15797/77 Heading C3P [Also in Division C2] An aqueous aerobic coating composition comprises an ethylenically unsaturated monomer, a trivalent cerium compound, a compound capable of chelating with Ce<SP>3+</SP> or Ce<SP>4+</SP>, a reducing sulphur compound capable of producing in water S x O y = where 1# Î #6 and 1#Y#7 or RSO 2 - ions where R is alkyl, phenyl alkylene, phenyl or substituted phenyl and optionally an organic solvent. Exemplified aqueous compositions are coated on to rusty steel plate to bind the rust and comprise a acrylamide and acrylic acid or methylene bisacrylamide; pyridine or triethanolamine; acetylacetone; cerium nitrate, sulphate, acetylacetononate or other Ce<SP>3+</SP> compounds including a methacrylyl acetone polymer containing chelated cerium; Na sulphite, bisulphite, pyrosulphite, metabisulphite di- or tetrathionate or a corresponding K or NH 4 compound. The chelate polymer is prepared by reacting polymethacrylacetone with cerium acetate in dioxane.</p> |
