IP Library Patent Application 11950611
Patent Application
App. No. 11/950,611

Production Vessel Mixtures

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Quick Facts
Patent No.
US None
App. No.
11/950,611
Abstract

Methods and materials are provided for the production and purification of halogenated compounds and intermediates in the production of 1,1,1,3,3-pentafluoropropane. In a preferred embodiment, the process steps include: (1) reacting carbon tetrachloride with vinyl chloride to produce 1,1,1,3,3-pentachloropropane; (2) dehydrochlorinating the 1,1,1,3,3-pentachloropropane with a Lewis acid catalyst to produce 1,1,3,3-tetrachloropropene; (3) fluorinating the 1,1,3,3-tetrachloropropene to produce 1-chloro-3,3,3-trifluoropropene; (4) fluorinating the 1-chloro-3,3,3-trifluoropropene to produce a product mixture containing 1,1,1,3,3-pentafluoropropane; and (5) separating 1,1,1,3,3-pentafluoropro-pane from by-products.

Claims (18)

1 - 35 . (canceled)

36 . A mixture within a production vessel comprising:

a hydrohalogenated compound comprising at least one halogen atom;

a hydrohalogen comprising the one halogen atom; and

a salt of the hydrohalogen, the salt comprising the one halogen atom.

37 . The mixture of claim 36 wherein the halogen atom is F.

38 . The mixture of claim 36 wherein:

the hydrohalogenated compound is 1,1,1,3,3-pentafluoropropane;

the hydrohalogen is HF; and

the inorganic salt is KF.

39 . The mixture of claim 36 wherein the salt comprises K.

40 . The mixture of claim 36 wherein the compound comprises at least three carbons.

41 . The mixture of claim 36 wherein the compound comprises from between five and seven halogens.

42 . The mixture of claim 36 wherein the compound comprises at least 5 halogens.

43 . The mixture of claim 36 wherein the compound comprises C 3 X 5 H 3 , wherein X is the halogen of the salt and hydrohalogen.

44 . The mixture of claim 36 wherein the compound comprises C 3 X 7 H, wherein X is the halogen of the salt and hydrohalogen.

45 . The mixture of claim 36 wherein the compound comprises C 3 X 6 H 2 , wherein X is the halogen of the salt and hydrohalogen.

46 . The mixture of claim 36 wherein an amount of salt in the mixture is less than a molar equivalent to an amount of hydrohalogen in the mixture.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Aug 11, 2008
From: GREAT LAKES CHEMICAL CORPORATION (DOING BUSINESS AS CHEMTURA CORPORATION
To: E. I. DU PONT DE NEMOURS AND COMPANY
Reel/Frame 021354/0915 →