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Class Information
Number: 570/262
Name: Organic compounds -- part of the class 532-570 series > Organic compounds (class 532, subclass 1) > Halogen containing > Purification or recovery
Description: Process wherein a halogen containing compound is separated from a mixture or in which impurities are separated from said compound.

Sub-classes under this class:

Class Number Class Name Patents
570/263 Liquid-liquid extraction 21

Patents under this class:
1 2 3 4

Patent Number Title Of Patent Date Issued
8628644 Utilizing ionic liquids for hydrofluorocarbon separation Jan. 14, 2014
8609909 Process for the purification of hydrofluoroolefins Dec. 17, 2013
8492598 Methods of removing impurities from alkyl bromides during distillation and distillate produced therein Jul. 23, 2013
8242317 Method for recovery of halogenated hydrocarbons Aug. 14, 2012
8153849 Trityl chloride recovery Apr. 10, 2012
8119846 Separation and/or recovery of propyl bromide Feb. 21, 2012
8118995 Process for inhibiting fouling in hydrocarbon processing Feb. 21, 2012
7968745 Purification process of iodixanol Jun. 28, 2011
7939698 Method for grignard type reactions in microreactors May. 10, 2011
7405334 Process for the reduction of acidic contaminates in fluorinated hydrocarbons Jul. 29, 2008
7291757 Method and device for utilizing heat in the production of 1,2-dichloroethane Nov. 6, 2007
7182840 Method and device for exploiting heat resulting from the production of 1,2-dichloroethane Feb. 27, 2007
7163606 Process for recovering methylene chloride Jan. 16, 2007
7132579 Method of chlorine purification and process for producing 1,2-dichloroethane Nov. 7, 2006
7112709 Method for reusing heavy end by-products in the manufacture of polychlorinated alkanes Sep. 26, 2006
7045668 Production and use of hexafluoroethane May. 16, 2006
6956143 Process for dissolving salts in 1,2-dichloroethane using ultrasound and a device for carrying out said process Oct. 18, 2005
6878853 Process for preparing dihalogenated adamantanes Apr. 12, 2005
6844474 Process for the production of difluoromethane Jan. 18, 2005
6787678 Method of removing water from hydrofluorocarbon manufacturing processes Sep. 7, 2004
6646171 Process for the crystallization of sterically hindered compounds Nov. 11, 2003
6589444 Process for separating water from chemical mixtures Jul. 8, 2003
6552238 Separation of heavy ends from streams of halogenated alkanes Apr. 22, 2003
6534688 Dehydrochlorination stabilization of polychlorinated alkanes Mar. 18, 2003
6423189 Process for the preparation of 1,3-dichloropropane Jul. 23, 2002
6323380 Water removal in purification of vinyl chloride Nov. 27, 2001
6320087 Adsorbent for separating halogenated aromatic compounds and separation method Nov. 20, 2001
6229059 Process for the production of 1, 2-dichloroethane May. 8, 2001
6150573 Concurrent production of trichloroethane isomers Nov. 21, 2000
6121506 Method for destroying energetic materials Sep. 19, 2000
6101818 Process for separating water from chemical mixtures Aug. 15, 2000
6093286 Process for purifying n-butyl chloride Jul. 25, 2000
5998691 Method and apparatus to destroy chemical warfare agents Dec. 7, 1999
5914432 Hydrogenation of halogenated compounds Jun. 22, 1999
5882485 Process for the separation of dimethyl ether and chloromethane in mixtures Mar. 16, 1999
5843286 Process for the preparation and fractionation of a mixture of dimethyl ether and chloromethane with water as extractant Dec. 1, 1998
5789633 Azeotropic or azeotrope-like compositions of hydrofluoric acid with dihaloethanes Aug. 4, 1998
5780695 Process for the selective saturation of olefin-containing halogenated organic streams Jul. 14, 1998
5744669 Process for the conversion of a halogenated organic stream containing trace quantities of organic nitrates Apr. 28, 1998
5698750 Methods for purifying and recovering contaminated refrigerants with aqueous solutions of bases Dec. 16, 1997
5672266 Treatment of organic compounds to reduce chlorine level Sep. 30, 1997
5637782 Process for the selective saturation of olefin-containing halogenated organic streams Jun. 10, 1997
5616821 Methods for purifying and recovering contaminated refrigerants with solutions of bases in organic solvents Apr. 1, 1997
5602295 Methods for the elimination of cyanides in the dehalogenation of halofluorocarbons Feb. 11, 1997
5600041 Process for the selective removal of organic nitrates from a halogenated organic stream containing trace quantities of organic nitrates Feb. 4, 1997
5559278 Methods for the destruction of ozone depleting substances Sep. 24, 1996
5536891 Purification of 1,1,1,-trichloroethane Jul. 16, 1996
5514251 Process for the removal of water from a solution by azeotropic distillation and process for the production of a hydrofluoroalkane May. 7, 1996
5504239 Process for separating off alkanols from other organic compounds of higher carbon number Apr. 2, 1996
5500097 Method for removing organic compound in water Mar. 19, 1996

1 2 3 4

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