2619.     PETERS, -----.  [Treatment of Kogasin.]  TOM Reel 170, frames 415-419, July 18, 1939.

        Catalytic cracking is superior to thermal cracking under pressure.  Since cracking catalysts polymerize easily, they should be used first for polymerization and then for cracking.  Si-Al as well as H₃PO₄ catalysts were being considered.