| 摘要 |
1285988 Treating polyvinylaromatic resins DOW CHEMICAL CO 4 Nov 1969 [4 Nov 1968] 54065/69 Heading C3P An electroconductive resin is prepared by hydrogenating an essentially linear polyvinylaromatic resin to reduce the residual ethylenic unsaturation to less than 0À3 wt. per cent calculated on vinyl groups, and then chloromethylating and aminating the polyvinylaromatic resin to give a water-soluble product. In the examples a linear polystyrene, prepared by peroxide catalysed polymerization of styrene, is hydrogenated utilizing (a) a palladium on charcoal catalyst in cyclohexane; (b) a Raney nickel catalyst in 1,2-dichloroethane and (c) a palladium or charcoal catalyst in 1,2-dichloroethane and subsequently chloromethylated and aminated utilizing a solution of chloromethyl methyl ether and zinc oxide in 1,2-dichloroethane and a solution of trimethylamine in 1,2-dichloroethane. The electroconductive resin may be used in the production of electrographic printing paper. |
