METHOD OF DESUBLIMATION OF PHTHALIC ANHYDRIDE FROM ITS MIXTURE WITH AIR Russian patent published in 1999 - IPC

Abstract RU 2138493 C1

FIELD: industrial organic synthesis. SUBSTANCE: method consists in cooling reaction gases by countercurrent stream of polymethylsiloxane liquid (inert cooling agent) in tray column at 42-50 C. EFFECT: enhanced cooling efficiency.

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RU 2 138 493 C1

Authors

Medvedev N.Ju.(Ru)

Dates

1999-09-27Published

1998-06-02Filed