| 摘要 |
Polymers of vinyl methyl ketone or isopropenyl ketone or the cyclization products of such polymers are heated to a temperature of from 30 DEG C. to 800 DEG C. in the presence of a metal halide of a metal of Groups IIIA, IVB, VB, VIB, or VIIB of the Periodic Table (defined) or of iron or zinc in the presence of a dehydrogenating agent, to produce aromatized high-molecular weight compounds. Copolymers of the above ketones containing at least 50% by weight of ketone may also be used. The cyclization products are formed by intramolecular condensation by the action of acid or alkali. The treatment of copolymers with styrene, vinyl chloride, butadiene, isoprene, acrylonitrile, and methacrylonitrile are exemplified. |
