| 摘要 |
1,143,433. Epoxides. SOC. NATIONALE DES PETROLES D'AQUITAINE. 14 April, 1966 [16 April. 1965], No. 16446/66. Heading C2C. Epoxides are prepared from optionally halogen substituted, unsaturated hydrocarbons containing at least one olefinic double bond by treatment in the liquid phase with hydrogen peroxide in the presence of a carboxylic type cation exchange resin in the H<SP>+</SP> form which is insoluble in the liquid phase. The epoxidation proceeds through the peroxidation of the carboxylic groups of the resin which may be, e.g., a phenolic acid resin, a carboxylated styrene copolymer, an acrylic or methacrylic acid copolymer or a derivative of carboxy methyl cellulose. Specified olefinic compounds are propylene, isobutene, butadiene, isoprene, diallyl, styrene, divinylbenzene, diallylbenzene, cyclohexene, cyclooctene, cyclopentadiene and allyl chloride. It is preferred to employ polar solvents which are at least partially miscible with water and in which the olefinic compound is soluble, e.g. esters, ketones and cyclic ethers. A polymerization inhibitor and a catalyst for the decomposition of hydrogen peroxide may be included in the reaction mixture. |
