Polymerization inhibitor for styrene dehydrogenation units

Details Polymerization inhibitor for styrene dehydrogenation units Polymerization inhibitor for styrene dehydrogenation units

2006-10-31

2006-10-31

Dang, Thuan D. (Department: 1764)

Mineral oils: processes and products

Chemical conversion of hydrocarbons

With prevention or removal of deleterious carbon...

C585S440000, C585S950000, C203S008000, C203S009000

Reexamination Certificate

active

07128826

ABSTRACT:
Quinone methide derivatives such as 4-benzylidene-2,6-di-tert-butyl-cyclohexa-2,5 dienone are used to inhibit styrene monomer polymerization in the dehydrogenator portion of a styrene monomer production system. The inhibitor contacts the dehydrogenation effluent and does not partition in substantial amounts to the aqueous phase that is separated in the phase separator.

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