| 摘要 |
1341948 Redox catalysts CASSELLA FARBWERKE MAINKUR AG 5 June 1972 [5 June 1971] 26142/72 Heading C3P [Also in Division C2] Compounds of the formula and their base addition salts wherein R and R<SP>1</SP> are each alkyl groups having 1 to 6 C atoms, cycloalkyl having 3 to 8 C atoms, alkenyl having 2 to 6 C atoms, alkinyl having 2 to 6 C atoms, phenyl, naphthyl, benzyl, phenethyl, phenpropyl, phenoxyethyl, thienyl, pyrrolyl, pyridyl or any one of these groups substituted by alkyl or alkoxy having 1 to 4 C atoms, alkenyl or alkinyl having 2 to 4 C atoms, chlorine, bromine, fluorine, cyano, nitro, hydroxy, carboxy, trifluoromethyl trifluoromethyloxy or R<SP>11</SP> being hydrogen, alkyl having 1 to 4 C atoms, phenoxy or phenoxyalkyl having 1 to 4 C atoms in the alkyl group are suitable as reducing components in redox catalyst systems of the type employed for the preparation of homopolymers and copolymers of olefinic unsaturated compounds. Suitable monomers for the preparation of these polymers are, e.g. acrylic acid, methacrylic acid as well as their salts, esters and amides, styrene, styrene halides, α methyl styrene vinyltoluene, alkylbenzene, vinylcarbazol, vinylmethylketone, acrylonitrile,vinylidene cyanide, vinyl acetate, methylolacrylamide or methacrylamide and their reaction products with amines and alcohols, vinyl pyrrolidone, carbazole esters of unsaturated alcohols, dialkylphthalate, ethylene and propylene. The preparation of the polymers may be by precipitation emulsion, solution or bulk polymerization at a temperature of between - 10‹ and 120‹ C. |
