Organic compounds -- part of the class 532-570 series – Organic compounds – Halogen containing
Patent
1997-01-03
1998-03-24
Siegel, Alan
Organic compounds -- part of the class 532-570 series
Organic compounds
Halogen containing
20415821, C07C 1738, C07B 6300
Patent
active
057314829
ABSTRACT:
Perchloroethylene containing contaminating amounts of dichlorobutadiene is treated with bromine, e.g., elemental bromine, in the presence of a free-radical initiator, thereby to produce perchloroethylene substantially-free of dichlorobutadiene and without significant loss of perchloroethylene. A bromine scavenger, e.g., trichloroethylene, can be added to the treated perchloroethylene to react with excess bromine that may be present in the perchloroethylene.
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Alleman J. Boyd
Mansell J. Douglas
Pertuit Robert K.
Wimer W. Eugene
PPG Industries Inc.
Siegel Alan
Stein Irwin M.
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