Distillation: processes – separatory – Addition of material to distilland to inhibit or prevent... – For inhibiting or preventing a polymerization reaction
Patent
1998-03-26
2000-09-12
Manoharan, Virginia
Distillation: processes, separatory
Addition of material to distilland to inhibit or prevent...
For inhibiting or preventing a polymerization reaction
203 9, 203 57, 526 83, 526 84, 585 5, B01D 334, C07C 720
Patent
active
061172766
ABSTRACT:
When a nitroxyl compound is heated in an oxygen-free atmosphere with a vinyl aromatic monomer at 50-140.degree. C. for up to 60 days, it forms an activated inhibitor mixture which is superior to the nitroxyl compound itself in preventing the premature polymerization of a vinyl aromatic monomer during its processing and purification.
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Cunkle Glen T.
Thompson Thomas F.
von Ahn Volker H.
Winter Roland A. E.
Breininger Thomas M.
Manoharan Virginia
Martin Michael B.
Nalco/Exxon Energy Chemicals L.P.
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