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    • 10. 发明专利
    • DE1901876A1
    • 1969-09-11
    • DE1901876
    • 1969-01-15
    • SHELL INT RESEARCH
    • RUYTER KLAASCASPER VEGTER GEERT
    • C07D303/16C08G59/24C08G30/02
    • 1,173,711. Diepoxyalkyl esters of bicyclo [2,2,1] heptane-2,3-dicarboxylic acids. SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ N.V. 17 Jan., 1968, No. 2557/68. Heading C2C. [Also in Division C3] The diepoxyalkyl esters of bicyclo [2,2,1] heptane-2 3-dicarboxylic acids, having the formula where R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , R 7 and R 8 denote hydrogen or alkyl groups and R 9 and R 10 denote epoxyalkyl groups with from 3 to 18 carbon atoms, are prepared by reaction of the corresponding dicarboxylic acid or its derivatives, e.g. salts, with epoxyalkyl group containing compounds, e.g. monohalogenated epoxyalkyl compounds such as epichlorohydrin. The esters may also be prepared by hydrogenation of the corresponding diepoxyalkyl ester of a bicyclo [2,2,1] - 5 - heptene - 2,3 - dicarboxylic acid. An example describes the preparation of the di-(2,3-epoxypropyl) ester of bicyclo [2,2,1] heptane-2,3-dicarboxylic acid starting from maleic anhydride and cyclopentadiene. The compounds may be cured to resinous products (see Division C3).