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US 5,177,275 AGranted
Reaction of substrate compounds with fluorine in an eductor
AssigneePCR Group, Inc.
InventorsKeith B. Baucom, Adam C. Alty, Earl J. Kimmel
Life of this patent
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Abstract
Substrate compounds are reacted by passing them through an eductor with fluorine gas optionally in the presence of a liquid medium and preferably in a loop reactor with cooling means thereby providing rapid but controlled reaction suitable for industrial scale production. Vinylidene chloride, for example, smoothly produces dichlorodifluoroethane and dichlorotrifluoroethane in good yield.
Claims10
A process for rapidly producing fluorine reacted substrate compounds and for controlling the resultant exotherm comprising
- (a) inducing movement in a liquid stream which is or contains a liquid substrate compound having at least one fluorine-reactive site to provide a moving substrate stream;
- and
- (b) educting elemental fluorine, alone, or in admixture with an inert gas wherein the molar ratio of inert gas to fluorine is less than 5:1, into the stream of liquid substrate whereby said fluorine is reacted rapidly with said substrate in a controlled manner;
- and
- (c) recovering a reacted substrate compound, a mixture of such compounds or an oligomeric derivative of such compound or compounds.
2 more elements
A process comprising
- (a) inducing movement in a liquid stream comprising vinylidene chloride to provide a moving substrate stream;
- (b) educting elemental fluorine, alone, or in admixture with an inert gas wherein the molar ratio of inert gas to fluorine is less than 5:1, into the substrate stream whereby said fluorine is reacted rapidly with said vinylidene chloride in a controlled manner;
- and
- (c) recovering a mixture of reacted compounds comprising 1,1-dichloro-2,2,2-trifluoro ethane and 1,1-dichloro-1,2-difluoro ethane.
1 more element
Dependencies are inferred from the claim text.