| Patents for C01B 7 - Halogens; Halogen acids (5,959) |
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| 06/20/1990 | CN1043089A Method for purification of acids from materials comprising acid and salt |
| 06/19/1990 | US4935220 Process for purifying crude gaseous hydrogen chloride |
| 06/14/1990 | WO1990006168A1 Method for purification of acids from materials comprising acid and salt |
| 06/13/1990 | EP0372900A2 Process for drying hydrogen fluoride - carboxylic acid mixtures |
| 06/13/1990 | EP0372737A1 Sieve plate for effecting gas-liquid contact and structure containing sieve plate |
| 06/13/1990 | CN1008351B Process for the manufacture of hydrofluoric acid by reaction of sulphuric acid with fluorospar in a rotating oven |
| 06/06/1990 | CA2003924A1 Process for drying hydrogen fluoride-carboxylic acid mixtures |
| 06/05/1990 | US4931012 Phase contactor/process for generating high temperature gaseous phase |
| 06/02/1990 | CA2003484A1 Sieve plate for effecting gas-liquid contact and structure containing sieve plate |
| 05/29/1990 | US4929435 Manufacture of high purity low arsenic anhydrous hydrogen fluoride |
| 05/29/1990 | CA1269636A1 Process and a device for flue gas desulphurization |
| 05/22/1990 | US4927621 Ultraviolet chlorination |
| 05/16/1990 | CN1007964B Adsorbent for recovery of bromine and bromine-recovering process using the same |
| 05/15/1990 | US4925646 Using a metal halide scavenger |
| 04/18/1990 | CN1041404A Process for cooling of gaseous chlorine |
| 04/11/1990 | EP0362666A1 Process for the preparation of AOX poor chlorhydric acid containing no chlorine |
| 03/28/1990 | EP0360486A2 Process for cooling of gaseous chlorine |
| 03/27/1990 | US4911792 Process for the separation of HF via phase separation and distillation |
| 03/21/1990 | EP0359011A1 Process for removing halogenated hydrocarbons from concentrated hydrochloric acid |
| 03/21/1990 | CN1040515A Constant flow generator of hydrogen fluoride |
| 03/20/1990 | US4910008 Gas-gas phase contactor |
| 03/14/1990 | CN1040359A Process for separation of hf via azeotropic distillation |
| 03/14/1990 | CN1040358A Process for separation of hf via phase separation and distillation |
| 02/27/1990 | US4903641 Method and apparatus for extracting saturated steam in the synthesis of hydrogen chloride gas |
| 02/14/1990 | EP0354697A1 Process for the separation of HF via azeotropic distillation |
| 02/14/1990 | CN1006776B Production process of chlorine |
| 02/13/1990 | US4900535 Recovery of fluoride values from waste materials |
| 02/07/1990 | EP0353970A1 Process for the separation of HF via phase separation and distillation |
| 01/25/1990 | WO1990000521A1 Manufacture of high purity low arsenic anhydrous hydrogen fluoride |
| 01/25/1990 | WO1990000520A1 Oxidation hydrolysis of iodoalkanes |
| 01/24/1990 | CN1038997A Preparation of hydrochloric acid and sodium carbonate by using ammonium chloride |
| 01/17/1990 | EP0351338A1 Oxidation hydrolysis of iodoalkanes |
| 01/17/1990 | EP0351107A1 Manufacture of high purity low arsenic anhydrous hydrogen fluoride |
| 01/16/1990 | US4894482 Process for drying hydrogen fluoride-carboxylic acid mixtures |
| 01/09/1990 | US4892625 Method for producing high purity chemicals |
| 12/26/1989 | US4889695 Leaching with caustic, then aluminum sulfate and sulfuric acid |
| 12/06/1989 | EP0344738A1 Process for purification of hydrochloric acid |
| 11/30/1989 | WO1989011321A1 Method and apparatus for purifying hydrogen fluoride |
| 11/23/1989 | EP0342521A1 Process for purifying crude gaseous hydrogen chloride |
| 11/21/1989 | US4882134 Recovery of hydrogen fluoride from an aqueous solution containing ammonium fluoride and hydrogen fluoride |
| 11/09/1989 | DE3811860A1 Process for the thermal disposal of chlorine-containing pollutants |
| 11/08/1989 | CN1036933A Salt mixture for preparation of magnesium and chlorine |
| 10/31/1989 | CA1262506A1 Chemical vapor purification of fluorides |
| 10/25/1989 | CN1036544A Industrial process for separation and recovery of chlorine |
| 10/17/1989 | US4874591 Process for the purification of waste gases containing hydrochloric acid and sulphur dioxide |
| 10/11/1989 | CN1036188A Prodn. process of chlorine |
| 10/04/1989 | CN2045380U Chlorine liquefying device |
| 09/26/1989 | CA1260959A1 Conversion of halogenated toxic substances |
| 09/26/1989 | CA1260229A1 Production process of chlorine |
| 09/26/1989 | CA1260228A1 Production process of chlorine |
| 09/19/1989 | US4867960 Chlorides of silicon or tungsten |
| 09/19/1989 | CA1259471A1 Catalyst recovery process |
| 09/12/1989 | US4866729 Pressurized combustion of a combustion supporter (f2 or nf3) and an excess of iodine-containing compound as fuel |
| 09/06/1989 | EP0331465A1 Production process of chlorine |
| 09/05/1989 | US4863710 Oxidation hydrolysis of iodoalkanes |
| 08/23/1989 | EP0329385A2 Industrial process for the separation and recovery of chlorine |
| 08/15/1989 | US4857295 Process for the manufacture of iodine |
| 08/01/1989 | US4853480 Oxyiodination incorporating an iodine generator for the conversion of methyl iodide to iodine |
| 08/01/1989 | US4853148 Contacting with scavenger on support |
| 07/26/1989 | CN2041682U Puring device for hydrochloric acid |
| 07/11/1989 | CA1257222A1 Removal of arsenic from acids |
| 06/27/1989 | US4842831 Efficient synthesis |
| 06/13/1989 | US4839153 Process for purification of HCl from pyrolysis of EDC |
| 06/13/1989 | US4838941 Reaction product of magnesium carbonates and silicates with metal chloride; high strength |
| 05/23/1989 | US4832935 Method for dehydrating hydrogen fluoride |
| 05/17/1989 | EP0316078A2 Process for the preparation of Copoly(arylene sulfide) |
| 05/16/1989 | US4830846 Separation process for anhydrous HCl and HBr by thermal cleavage |
| 05/10/1989 | EP0315075A1 A method for dehydrating hydrogen fluoride |
| 05/09/1989 | US4828815 Production process of chlorine |
| 05/05/1989 | WO1989003850A1 Copoly(arylene sulfide) and a process for the preparation thereof |
| 04/18/1989 | US4822589 Catalytic oxidation of hydrogen chloride using supported chromic oxide catalyst |
| 04/13/1989 | DE3732331A1 Process for producing iodine and bromine from waste materials of power generation |
| 04/04/1989 | US4818513 Liquid organic barrier material, condensation |
| 03/28/1989 | US4816122 Preparation of aluminum fluoride from scrap aluminum cell potlinings |
| 03/28/1989 | CA1251894A1 Silicon and/or fluorine treated alumina |
| 03/15/1989 | EP0307107A1 Method for the combustion of spent potlinings from the manufacture of aluminum |
| 03/08/1989 | CN1003504B Production process of chlorine |
| 03/01/1989 | CN2033292U Ion exchange column for extracting bromine from bittern |
| 02/21/1989 | US4806513 Silicon and fluorine-treated alumina containing a chromium catalyst and method of producing same |
| 02/21/1989 | CA1250133A1 Hydrogen fluoride recovery process |
| 02/09/1989 | WO1989000986A1 Oxyiodination incorporating an iodine generator for the conversion of methyl iodide to iodine |
| 02/07/1989 | US4803065 Production process of chlorine |
| 02/07/1989 | CA1249725A1 Recovery of chlorine |
| 01/25/1989 | EP0300085A1 Continuous vacuum process and apparatus for recovering bromine |
| 01/18/1989 | EP0299306A2 Process for the preparation of hydrogen fluoride and anhydrite |
| 01/11/1989 | EP0298472A1 Process for workin-up chlorination residues |
| 12/20/1988 | CA1246815A1 Protective garment of composite fabric containing sulphonated fluoropolymer film with metal ion groups |
| 12/14/1988 | CN88103256A Method of treating by silicopyrohydrolysis worn linings from hall-heroult electrolysis tanks |
| 12/13/1988 | CA1246490A1 Process for the electrolytic production of fluorine and novel cell therefor |
| 12/07/1988 | EP0294300A1 Process for treating the linings of Hall-Heroult electrolytic cells by silicopyrohydrolysis |
| 11/22/1988 | US4786488 Process for the purification of hydrochloric acids |
| 11/01/1988 | US4781110 Band guiding arch for strapping machine |
| 10/26/1988 | EP0288284A2 Method of producing iodine 124 and meta-iodobenzylguanidine containing iodine 124 |
| 10/20/1988 | DE3712125A1 Process for working up chlorosilane-containing residues by incineration (combustion) with recovery of finely divided silica and gaseous HCl from the flue gases |
| 10/19/1988 | CN87216753U Automatic chlorine recovery device |
| 10/12/1988 | EP0286450A1 Recovery of hydrogen fluoride from aqueous solution containing ammonium fluoride and hydrogen fluoride |
| 10/12/1988 | EP0286449A1 Recovery of ammonia and hydrogen fluoride from ammonium fluoride solutions |
| 10/12/1988 | EP0171316B1 Process and apparatus for contacting at least two gaseous components reacting at high temperatures |
| 10/12/1988 | CN87105455A Preparation method of chlorine |
| 10/11/1988 | US4777028 Process for freeing mineral acids from heavy metals |