Patents
Sitemap › C01 - Inorganic chemistry › C01B - Non-metallic elements; Compounds thereof › C01B 7 - Halogens; Halogen acids
Patents for C01B 7 - Halogens; Halogen acids (5,959)
11/1998
11/24/1998US5840266 Dehydration of fluoride mixtures
11/19/1998WO1998051388A1 Method for reducing metal ion content in a chemical compound with a dipole moment
11/19/1998CA2290015A1 Method for reducing metal ion content in a chemical compound with a dipole moment
11/18/1998EP0728121B1 Method for preparing high purity hydrogen bromide
11/18/1998CN1040738C Process for purification of aqueous solution of alkali chloride to remove iodine
11/12/1998WO1998050148A1 Activated nutshell carbons with enhanced removal of polar organics
11/12/1998DE19719720A1 Verfahren zur Verringerung des Metallionengehaltes in einer chemischen Verbindung mit Dipolmoment A method of reducing the metal ion content in a chemical compound having dipole moment
11/10/1998US5833834 Method for generating hydrogen from HBR
11/10/1998US5833814 Exposure to ultraviolet radiation to decompose phosgene into carbon monoxide and free chlorine, then removal by sparging with nitrogen; for use in microelectronics
11/04/1998CN1198110A On-site ammonia purification for semiconductor manufacture
11/04/1998CN1198102A On-site generation of ultra-high-purity buffered HF for semiconductor processing
11/03/1998US5832361 Treatment of fluids with electromagnetic radiation
10/1998
10/28/1998EP0715614B1 Organic separation from hf
10/28/1998EP0655083B1 Municipal solid waste disposal process
10/28/1998CN1040417C Method for regeneration of hydrochloric soaked agent from hydrochloric soaked liquid
10/27/1998US5827492 Hydrogen chloride purification process
10/15/1998WO1998045209A1 Hydrogen fluoride recovery process
10/15/1998CA2284052A1 Hydrogen fluoride recovery process
10/14/1998EP0870729A1 Process and device for producing chemical products of high purity for the microelectronic industry
10/13/1998US5820827 Useful for delivering hot corrosive hydrogen chloride and oxygen for production of chlorine in presence of oxidation catalyst hydropneumatically in an intermitten cycle in the circuit from sump vessel to a supply vessel
10/08/1998WO1998043717A1 METHOD FOR RECOVERING ALKANOLS FROM AQUEOUS HBr SOLUTIONS
10/06/1998US5817288 Hydrohalogenation
10/01/1998WO1998042793A1 Radiation shielding materials and containers incorporating same
10/01/1998CA2284942A1 Radiation shielding materials and containers incorporating same
09/1998
09/16/1998EP0863865A1 Acid-salt metathetic process
09/11/1998WO1998039249A1 Method for producing hyperazeotropic hydrochloric acid from metal chloride solutions
09/09/1998EP0831978A4 On-site ammonia purification for semiconductor manufacture
09/02/1998EP0861803A1 Fixed bed temperature swing catalytic process for chemical reactions
09/02/1998EP0625957B1 Acid regeneration
09/01/1998US5800795 Hydrogen fluoride recovery process
09/01/1998US5800791 Column baffles for suspensions with precipitating substances
08/1998
08/27/1998WO1998037043A2 Processes for the manufacture of 1,1,1,3,3-pentafluoropropene, 2-chloro-pentafluoropropene and compositions comprising saturated derivatives thereof
08/27/1998CA2229993A1 Fixed-bed temperature swing catalytic process for chemical reactions
08/26/1998EP0835168A4 On-site manufacture of ultra-high-purity nitric acid for semiconductor processing
08/19/1998CN1190913A On-site manufacture of ultra-high-purity hydrofluoric acid for semiconductor processing
08/13/1998DE19704486A1 Combustion of substance containing chlorine with hydrogen chloride recovery suitable for long-term technical operation
08/12/1998EP0693469B1 Azeotropic mixture consisting of 1,1-difluoroethane and hydrogen fluoride and processes for recovering said compounds from mixtures thereof
08/12/1998CN1190360A On-site generation of ultra-high-purity buffered-HF for semiconductor processing
08/06/1998DE19703906A1 Conversion of di:benzyl ether into benzyl chloride
08/06/1998DE19702814A1 Recovering iodine from iodo-aromatic compounds
08/05/1998CN1189787A Point-of-use ammonia purifation for electronic component manufacture
08/05/1998CN1189448A Method of preparing hydrobromic acid by utilizing tail gas containng bromine
08/04/1998US5789633 Azeotropic or azeotrope-like compositions of hydrofluoric acid with dihaloethanes
08/04/1998US5789632 Distillation of mixture with hydrogen fluoride
08/04/1998US5788743 Selective separation and recovery of chlorine from gas mixtures
07/1998
07/29/1998EP0854838A1 Hydrogen fluoride recovery process
07/29/1998CN1188739A Manufacture device for high purity hydrochloric acid and manufacture method
07/29/1998CN1039313C Process for removal of hydrogen fluoride
07/28/1998US5785820 On-site manufacture of ultra-high-purity hydrofluoric acid for semiconductor processing
07/22/1998CN1188077A Process for preparing salt by working up seawater
07/22/1998CN1188076A Bittern comprehensive utilization method
07/15/1998EP0606482B1 Method of removing hydrogen fluoride
07/15/1998CN1039117C Process for inhibiting corrosion in alkylation process by using catalyst system
07/09/1998WO1998029372A1 Processes for the preparation of perfluoroalkanes and iodine pentafluoride
07/08/1998EP0851835A1 Method of processing fluorine-contaminated hydrochloric acid arising from waste treatment
07/08/1998EP0851834A1 Exothermic two-stage process for catalytic oxidation of hydrogen chloride
07/08/1998CN1187152A In site production of super high pure nitric acid for semiconductor working
07/01/1998CN1186042A Method and apparatus for producing high purity hydrochloric acid from chlorine tailings as by product from liquefaction of dry chlorine gas
06/1998
06/30/1998US5772852 Distilling by heating to form an azeotrope and recovering hydrochloric acid
06/25/1998WO1998027006A1 Process for the production of active fluorine and intermediates involved in active fluorine production and use of this active fluorine
06/25/1998WO1998027005A1 Device and method for the storage, transportation and production of active fluorine
06/25/1998WO1998026855A1 Method for preparing alkali metal fluoride pellets and gas scrubbing method using the same
06/23/1998US5769924 Method of treating aluminum with chlorine produced from chlorocarbon compounds
06/17/1998CN1038742C Method for prodn. of sodium silicate
06/16/1998US5766565 Adsorption of silicon compound impurities from an acid by-product stream by activated charcoal; regeneration and reuse of the charcoal
06/16/1998US5766483 Contacting chemical mixture containing hydrogen fluoride with a synthetic water soluble acrylic acid polymer binder, regenrating hydrogen fluoride from the binder for reuse
06/10/1998EP0815271A4 Fast quench reactor and method
06/04/1998DE19648442A1 Removal of hydrogen fluoride and silicon from waste gas
05/1998
05/28/1998DE19751551A1 Iodo-tri:fluoromethane preparation from tri:fluoromethane and iodine
05/27/1998EP0843579A1 Production of halogen and carbon oxide streams
05/27/1998CN1182717A Productive process of chlorine
05/26/1998US5756063 Process for manufacturing isocyanates and producing reagent grade hydrochloric acid therefrom
05/26/1998US5755934 Point-of-use ammonia purification for electronic component manufacture
05/26/1998US5755855 Separation process combining condensation, membrane separation and flash evaporation
05/20/1998EP0739228A4 Recycling of wafer cleaning substances
05/20/1998CN1182456A Fast quench reactor and method
05/12/1998US5752158 Thermal process for the conversion of uranium hexafluoride
05/12/1998US5749937 Fast quench reactor and method
05/07/1998DE19748299A1 Production of chlorine@
05/06/1998CN1038245C Method for removing ferrous salt from industrial halogen hydrogen acid
04/1998
04/30/1998WO1998017365A1 Enhanced adsorbent and room temperature catalyst particle and method of making and using therefor
04/28/1998US5744116 Reaction of uranium fluorides with mineral acids to recover hydrogen fluoride
04/23/1998DE19628295A1 Extreme energy flux generation by photon-propagated chemical reaction
04/22/1998EP0836536A1 On-site generation of ultra-high-purity buffered-hf for semiconductor processing
04/22/1998CN1038123C Method for preparation of chlorine dioxide and generator thereof
04/15/1998EP0835169A1 On-site manufacture of ultra-high-purity hydrochloric acid for semiconductor processing
04/15/1998EP0835168A1 On-site manufacture of ultra-high-purity nitric acid for semiconductor processing
04/08/1998EP0834177A1 Producing halogenated products from metal halide feeds
04/08/1998EP0833705A1 On-site manufacture of ultra-high-purity hydrofluoric acid for semiconductor processing
04/01/1998EP0831978A1 On-site ammonia purification for semiconductor manufacture
03/1998
03/26/1998WO1998011776A1 Powders providing controlled sustained release of a gas
03/25/1998EP0830334A1 Azeotropic or azeotrope-like compositions of hydrofluoric acid with dihaloethanes
03/25/1998EP0830316A1 Point-of-use ammonia purification for electronic component manufacture
03/19/1998WO1998010851A1 Separation and purification of fluoride from industrial waste
03/18/1998EP0828689A1 Metal and fluorine values recovery from fluoride salt matrices
03/18/1998CN1176223A Process for producing chlorine
03/18/1998CN1176149A Bismuth-containing catalysts
03/11/1998CN1175549A Process for production of hydrogen bromide gas and device for its implementation
03/05/1998WO1998008789A1 Process for producing difluoromethane
03/05/1998CA2264686A1 Process for producing difluoromethane
1 ... 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 ... 60