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Class Information
Number: 203/67
Name: Distillation: processes, separatory > Adding material to distilland except water or steam per se > Organic compound > Halogenated hydrocarbon
Description: Processes in which the compound is a halogenated hydrocarbon.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7371309 |
Purification of difluoromethane by extractive distillation |
May. 13, 2008 |
| 7241928 |
Process for the manufacture of halocarbons and selected compounds and azeotropes with HF |
Jul. 10, 2007 |
| 7189311 |
Purification of difluoromethane |
Mar. 13, 2007 |
| 7182841 |
Purification of solvents used for the purification of alkylene oxide |
Feb. 27, 2007 |
| 7153397 |
Process for the purification of fluoromethyl hexafluoroisopropyl ether |
Dec. 26, 2006 |
| 7074434 |
Process for the separation of a mixture comprising at least one hydrofluoroalkane and hydrogen fluoride, processes for the preparation of a hydrofluoroalkane and azeotropic compositions |
Jul. 11, 2006 |
| 7060165 |
Processes for purification and production of fluorocarbons |
Jun. 13, 2006 |
| 7037412 |
Method for preparing deodorized N-vinyl-2-pyrrolidone |
May. 2, 2006 |
| 6863780 |
Process of separating/purifying pentafluoropropane |
Mar. 8, 2005 |
| 6849163 |
Method for producing tetrafluoroethylene |
Feb. 1, 2005 |
| 6794470 |
Process for producing a tetrafluoroethylene polymer |
Sep. 21, 2004 |
| 6790319 |
Method for recovering titanium compound, process for preparing titanium halide, and process for preparing catalyst for polymer production |
Sep. 14, 2004 |
| 6755942 |
Process for the manufacture of halocarbons and selected compounds and azeotropes with HF |
Jun. 29, 2004 |
| 6676809 |
Process for removal of hydrogen fluoride |
Jan. 13, 2004 |
| 6660130 |
Apparatus for vaporization of liquids |
Dec. 9, 2003 |
| 6649205 |
Solvent extraction |
Nov. 18, 2003 |
| 6638987 |
Azeotrope-like compositions of tetrafluoroethane, pentafluoropropane and water |
Oct. 28, 2003 |
| 6635686 |
Azeotrope-like compositions of tetrafluoroethane, pentafluoropropane and methylbutane |
Oct. 21, 2003 |
| 6572831 |
Materials treatment |
Jun. 3, 2003 |
| 6548720 |
Process for the manufacture of 1,1,1,3,3-pentafluoropropene, 2-chloro-pentafluoropropene and compositions comprising saturated derivatives thereof |
Apr. 15, 2003 |
| 6527917 |
Process for preparing pentafluoroethane |
Mar. 4, 2003 |
| 6488817 |
Purification of hydrofluorocarbons |
Dec. 3, 2002 |
| 6458249 |
Process for purifying perfluorinated products |
Oct. 1, 2002 |
| 6455087 |
Solvent extraction |
Sep. 24, 2002 |
| 6444096 |
Process for the recovery and purification of cyclobutanone |
Sep. 3, 2002 |
| 6417413 |
Process for the preparation of halogenated ethanes |
Jul. 9, 2002 |
| 6383343 |
Separation of components from methanol mixtures by extractive distillation |
May. 7, 2002 |
| 6376727 |
Processes for the manufacture of 1,1,1,3,3-pentafluoropropene, 2-chloro-pentafluoropropene and compositions comprising saturated derivatives thereof |
Apr. 23, 2002 |
| 6375807 |
Separation of ethanol mixtures by extractive distillation |
Apr. 23, 2002 |
| 6224781 |
Compositions comprising hydrofluorocarbons and their manufacture |
May. 1, 2001 |
| 6221830 |
Purification process for hexafluoroethane products |
Apr. 24, 2001 |
| 6156161 |
Extractive distillation process for separating difluoromethane and pentafluoroethane using methylene chloride |
Dec. 5, 2000 |
| 6120652 |
Method for purifying crude 1,1,1,3,3-pentafluoropropane |
Sep. 19, 2000 |
| 6099694 |
Azeotrope-like compositions of difluoromethane and chlorine |
Aug. 8, 2000 |
| 6043063 |
Methods of PHA extraction and recovery using non-halogenated solvents |
Mar. 28, 2000 |
| 6039845 |
Process for the purification of pentafluoroethane by extractive distillation |
Mar. 21, 2000 |
| 5928479 |
Process for the purification of pentafluoroethane |
Jul. 27, 1999 |
| 5902911 |
Production of 2-chloro-2-hydrohexafluoropropane and azeotropes thereof with HF |
May. 11, 1999 |
| 5897750 |
Separation of acetone from isopropanol-water mixtures by extractive distillation |
Apr. 27, 1999 |
| 5882485 |
Process for the separation of dimethyl ether and chloromethane in mixtures |
Mar. 16, 1999 |
| 5879517 |
Method for separating 2-butanol from t-amyl alcohol using certain organic compounds as the agent in extractive distillation |
Mar. 9, 1999 |
| 5876569 |
Separation of methyl ethyl ketone from ethanol by extractive distillation |
Mar. 2, 1999 |
| 5853550 |
Process for separating tar from a reaction mixture |
Dec. 29, 1998 |
| 5846388 |
Azeotropic mixture of 1,1-difluoroethane and hydrogen fluoride and production process of 1,1-difluoroethane |
Dec. 8, 1998 |
| 5840160 |
Separation of 3-carene from limonene by extractive distillation |
Nov. 24, 1998 |
| 5795447 |
Separation of 2-butanol from isobutanol by extractive distillation |
Aug. 18, 1998 |
| 5785822 |
Process for separating difluoromethane |
Jul. 28, 1998 |
| 5779862 |
Separation of 2-methyl-1-butanol and 3-methyl-1-butanol from 1-pentanol by azeotropic distillation |
Jul. 14, 1998 |
| 5772852 |
Separating HCI and halocarbons |
Jun. 30, 1998 |
| 5738763 |
Separation of 2-methyl-1-propanol from 2-methyl-1-butanol by extractive distillation |
Apr. 14, 1998 |
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