| abstract |
HALOHYDRINS (ESPECIALLY CHLORO- AND BROMO-HYDRINS) ARE PREPARED FROM OLEFINS HAVING A DOUBLE BOND NOT ACTIVATED BY AN ADJACENT AROMATIC RADICAL, BY REACTION WITH A DILUTE SOLUTION OF HYDROGEN PEROXIDE AND THE CORRESPONDING AQUEOUS HYDROGEN HALIDE. EXAMPLES OF STARTING OLEFINS ARE CYCLOHEXENE, BUTADIENE, AND POLYBUTADIENE, TO MAKE, RESPECTIVELY, 2-HALOCYCLOHEXANOL, THE THREE ISOMERIC DIHALOBUTANEDIOLLS, AND POLY (3-HALO-2-HYDROXYTETRAMETHYLENE). HALOHYDRIN OF EPDM RUBBER MAY BE PREPARED BY THE PROCESS. THE EPDM HALOHYDRIM CAN BE CURED BY THE ACTION OF DIISOCYANATES OR OTHER REAGENTS. |