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Patent Abstracts

      366.     ------.  [CHEMISCHES WERK SCHOLLENE G. M. B. H.]  [Refined Cumarone Resins.]  German Patent Appl. C 57,593, no date (Cl. IV c-22 h).  Auszüge deut.  Patent-Anmeldungen. Vol. 6, p. 654.

Selective processing of cumarone resins by dissolving 2 parts of cumarone resin in 1 part benzol and the precipitating the dark constituents by means of Fischer-Tropsch benzine.