| abstract |
ALCOHOLS, E.G. TERT-AMYL ALCOHOL ARE DEHYDRATED AND OXYDEHYDROGENATED IN A TWO-STAGE, HALOGENATED-PROMOTED PROCESS BY PREFERABLY FIRST PASSING ALCOHOL-HALOGEN-OXYGEN MIXTURE OVER A SUBSTANTIALLY INER CONTACT-SURFACE, E.G., ALUNDUM, AND THEN PASSING THE MIXTURE OVER A METALLIC OXIDE CATALYST, E.G. COPPER CHROMITE, TO PRODUCE DIENES, E.G. ISOPRENE. ISOPRENE AND OTHER DIENES ARE USEFUL IN THE MANUFACTURE OF ELASTOMERS USED IN THE MANUFACTURE OF TIRES AND OTHER ELASTOMERIC PRODUCTS. |