| IPC 6 English version | C01B02300-C01B03346 | |
| << C01B 15/00 - C01B 21/50 | C01B 35/00 - C01B 39/54 >> |
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SECTION C | – CHEMISTRY; METALLURGY |
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INORGANIC CHEMISTRY (processing powders of inorganic compounds preparatory to the manufacturing of ceramic products C 04 B 35/00; fermentation or enzyme-using processes for the preparation of elements or inorganic compounds except carbon dioxide C 12 P 3/00; obtaining metal compounds from mixtures, e.g. ores, which are intermediate compounds in a metallurgical process for obtaining a free metal C 21 B, C 22 B; production of non-metallic elements or inorganic compounds by electrolysis or electrophoresis C 25 B) |
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NON-METALLIC ELEMENTS; COMPOUNDS THEREOF |
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23/ | 00 | Noble gases; Compounds thereof (liquefying F 25 J) |
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25/ | 00 | Phosphorus; Compounds thereof (C 01 B 21/00, C 01 B 23/00 take precedence; perphosphates C 01 B 15/16) |
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25/ | 01 | . | Treating phosphate ores or other raw phosphate materials to obtain phosphorus or phosphorus compounds [2] |
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25/ | 02 | . | Preparation of phosphorus |
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25/ | 023 | . . | of red phosphorus [2] |
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25/ | 027 | . . | of yellow phosphorus [2] |
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25/ | 04 | . | Purification of phosphorus |
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25/ | 043 | . . | of red phosphorus [2] |
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25/ | 047 | . . | of yellow phosphorus [2] |
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25/ | 06 | . | Hydrogen phosphides |
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25/ | 08 | . | Other phosphides |
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25/ | 10 | . | Halides or oxyhalides of phosphorus [2] |
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25/ | 12 | . | Oxides of phosphorus |
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25/ | 14 | . | Sulfur, selenium, or tellurium compounds of phosphorus |
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25/ | 16 | . | Oxyacids of phosphorus; Salts thereof (peroxyacids or salts thereof C 01 B 15/00) |
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25/ | 163 | . . | Phosphorous acid; Salts thereof [2] |
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25/ | 165 | . . | Hypophosphorous acid; Salts thereof [2] |
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25/ | 168 | . . | Pyrophosphorous acid; Salts thereof [2] |
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25/ | 18 | . . | Phosphoric acid |
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25/ | 20 | . . . | Preparation from elemental phosphorus or phosphoric anhydride |
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25/ | 22 | . . . | Preparation by reacting phosphate containing material with an acid, e.g. wet process |
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25/ | 222 | . . . . | with sulfuric acid, a mixture of acids mainly consisting of sulfuric acid or a mixture of compounds forming it in situ, e.g. a mixture of sulfur dioxide, water and oxygen [3] |
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25/ | 223 | . . . . . | only one form of calcium sulfate being formed [3] |
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25/ | 225 | . . . . . . | Dihydrate process [3] |
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25/ | 226 | . . . . . . | Hemihydrate process [3] |
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25/ | 228 | . . . . . | one form of calcium sulfate being formed and then converted to another form [3] |
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25/ | 229 | . . . . . . | Hemihydrate-dihydrate process [3] |
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25/ | 231 | . . . . . . | Dihydrate-hemihydrate process [3] |
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25/ | 232 | . . . . . | Preparation by reacting phosphate containing material with concentrated sulfuric acid and subsequently lixiviating the obtained mass, e.g. clincker process [3] |
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25/ | 234 | . . . | Purification; Stabilisation; Concentration (purification concomitant with preparation C 01 B 25/22; preparation involving solvent-solvent extraction C 01 B 25/46) [3] |
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25/ | 235 | . . . . | Clarification; Stabilisation to prevent post-precipitation of dissolved impurities [3] |
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25/ | 237 | . . . . | Selective elimination of impurities [3] |
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25/ | 238 | . . . . . | Cationic impurities [3] |
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25/ | 24 | . . | Condensed phosphoric acids |
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25/ | 26 | . . | Phosphates (perphosphates C 01 B 15/16) |
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25/ | 28 | . . . | Ammonium phosphates |
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25/ | 30 | . . . | Alkali metal phosphates |
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25/ | 32 | . . . | Phosphates of magnesium, calcium, strontium, or barium |
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25/ | 34 | . . . . | Magnesium phosphates |
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25/ | 36 | . . . | Aluminium phosphates |
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25/ | 37 | . . . | Phosphates of heavy metals [2] |
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25/ | 38 | . . . | Condensed phosphates |
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25/ | 39 | . . . . | of alkali metals [3] |
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25/ | 40 | . . . . | Polyphosphates [2] |
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25/ | 41 | . . . . . | of alkali metals [3] |
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25/ | 42 | . . . . | Pyrophosphates [2] |
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25/ | 44 | . . . . | Metaphosphates [2] |
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25/ | 445 | . . . . . | of alkali metals [3] |
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25/ | 45 | . . . | containing plural metal, or metal and ammonium [3] |
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25/ | 455 | . . . | containing halogen [3] |
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25/ | 46 | . . | Preparation involving solvent-solvent extraction (solvent extraction in general B 01 D 11/00) [2] |
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31/ | 00 | Carbon; Compounds thereof (C 01 B 21/00, C 01 B 23/00 take precedence; percarbonates C 01 B 15/10; carbon black C 09 C 1/48; gas carbon production C 10 B) |
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31/ | 02 | . | Preparation of carbon (by using ultra-high pressure, e.g. for the formation of diamonds, B 01 J 3/06; by crystal growth C 30 B); Purification |
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31/ | 04 | . . | Graphite |
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31/ | 06 | . . | Diamond |
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31/ | 08 | . | Active carbon |
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31/ | 10 | . . | Preparation by using gaseous activating agents |
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31/ | 12 | . . | Preparation by using non-gaseous activating agents |
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31/ | 14 | . . | Granulation (apparatus B 01 J 2/00) |
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31/ | 16 | . | Preparation of ion-exchanging materials from carbonaceous material |
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31/ | 18 | . | Carbon monoxide (metal carbonyls C 01 G) |
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31/ | 20 | . | Carbon dioxide |
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31/ | 22 | . . | Solidifying |
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31/ | 24 | . | Methods for the preparation of carbonates or bicarbonates in general (percarbonates C 01 B 15/10; particular individual carbonates, see the relevant groups of subclasses C 01 B to C 01 G, according to the cation) |
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31/ | 26 | . | Compounds containing carbon and sulfur, e.g. carbon disulfide, carbon oxysulfide; Thiophosgene |
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31/ | 28 | . | Phosgene |
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31/ | 30 | . | Carbides (alloys C 22) |
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31/ | 32 | . . | Calcium carbide |
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31/ | 34 | . . | Tungsten or molybdenum carbides |
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31/ | 36 | . . | Carbides of silicon or boron |
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33/ | 00 | Silicon; Compounds thereof (C 01 B 21/00, C 01 B 23/00 take precedence; persilicates C 01 B 15/14; carbides C 01 B 31/36) |
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33/ | 02 | . | Silicon (forming single crystals or homogeneous polycrystalline material with defined structure C 30 B) [5] |
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33/ | 021 | . . | Preparation (chemical coating from the vapour phase C 23 C 16/00) [5] |
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33/ | 023 | . . . | by reduction of silica or silica-containing material [5] |
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33/ | 025 | . . . . | with carbon or a solid carbonaceous material, i.e. carbo-thermal process [5] |
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33/ | 027 | . . . | by decomposition or reduction of gaseous or vaporised silicon compounds other than silica or silica-containing material [5] |
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33/ | 029 | . . . . | by decomposition of monosilane [5] |
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33/ | 03 | . . . . | by decomposition of silicon halides or halosilanes or reduction thereof with hydrogen as the only reducing agent [5] |
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33/ | 031 | . . . . . | by decomposition of silicon tetraiodide [5] |
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33/ | 033 | . . . . | by reduction of silicon halides or halosilanes with a metal or a metallic alloy as the only reducing agents [5] |
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33/ | 035 | . . . . | by decomposition or reduction of gaseous or vaporised silicon compounds in the presence of heated filaments of silicon, carbon or a refractory metal, e.g. tantalum or tungsten, or in the presence of heated silicon rods on which the formed silicon is deposited, a silicon rod being obtained, e.g. Siemens process [5] |
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33/ | 037 | . . | Purification (by zone-melting C 30 B 13/00) [5] |
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33/ | 039 | . . . | by conversion of the silicon into a compound, optional purification of the compound, and reconversion into silicon [5] |
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33/ | 04 | . | Hydrides of silicon |
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33/ | 06 | . | Metal silicides (alloys C 22) |
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33/ | 08 | . | Compounds containing halogen |
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33/ | 10 | . . | Compounds containing silicon, fluorine, and other elements |
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33/ | 107 | . . | Halogenated silanes [3] |
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33/ | 113 | . | Silicon oxides; Hydrates thereof [3] |
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33/ | 12 | . . | Silica; Hydrates thereof, e.g. lepidoic silicic acid [3] |
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33/ | 14 | . . . | Colloidal silica, e.g. dispersions, gels, sols [3] |
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33/ | 141 | . . . . | Preparation of hydrosols or aqueous dispersions [3] |
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33/ | 142 | . . . . . | by acidic treatment of silicates [3] |
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33/ | 143 | . . . . . . | of aqueous solutions of silicates [3] |
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33/ | 145 | . . . . | Preparation of hydroorganosols, organosols or dispersions in an organic medium [3] |
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33/ | 146 | . . . . | After-treatment of sols (preparation of hydroorganosols, organosols or dispersions in an organic medium from hydrosols C 01 B 33/145) [3] |
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33/ | 148 | . . . . . | Concentration; Drying; Dehydration; Stabilisation; Purification [3] |
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33/ | 149 | . . . . . | Coating [3] |
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33/ | 151 | . . . . . | by progressively adding a sol to a different sol, i.e. "build up" of particles using a "heel" [3] |
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33/ | 152 | . . . . | Preparation of hydrogels [3] |
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33/ | 154 | . . . . . | by acidic treatment of aqueous silicate solutions [3] |
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33/ | 155 | . . . . | Preparation of hydroorganogels or organogels [3] |
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33/ | 157 | . . . . | After-treatment of gels [3] |
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33/ | 158 | . . . . . | Purification; Drying; Dehydrating [3] |
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33/ | 159 | . . . . . | Coating or hydrophobisation [3] |
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33/ | 16 | . . . | Preparation of silica xerogels [3] |
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33/ | 18 | . . . | Preparation of finely divided silica neither in sol nor in gel form; After-treatment thereof (preparation of aerogels by dehydrating gels C 01 B 33/158; treatment to enhance the pigmenting or filling properties C 09 C) [3] |
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33/ | 187 | . . . . | by acidic treatment of silicates [3] |
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33/ | 193 | . . . . . | of aqueous solutions of silicates [3] |
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33/ | 20 | . | Silicates (persilicates C 01 B 15/14) |
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33/ | 21 | (transferred to C 01 B 33/44) |
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33/ | 22 | . . | Magnesium silicates |
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33/ | 24 | . . | Alkaline earth metal silicates |
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33/ | 26 | . . | Aluminium-containing silicates [5] |
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33/ | 30 | (transferred to C 01 B 33/38) |
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33/ | 32 | . . | Alkali metal silicates (C 01 B 33/26 takes precedence) [3] |
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33/ | 34 | (transferred to C 01 B 33/36, C 01 B 39/00) |
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33/ | 36 | . . | having base-exchange properties but not having molecular sieve properties (regeneration thereof B 01 J 49/00) [6] |
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33/ | 38 | . . . | Layered base-exchange silicates, e.g. clays, micas or alkali metal silicates of kenyaite or magadiite type [6] |
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33/ | 40 | . . . . | Clays [6] |
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33/ | 42 | . . . . | Micas [6] |
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33/ | 44 | . . . . | Products obtained from layered base-exchange silicates by ion-exchange with organic compounds such as ammonium, phosphonium or sulfonium compounds or by intercalation of organic compounds, e.g. organoclay material [6] |
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33/ | 46 | . . . | Amorphous silicates, e.g. so-called "amorphous zeolites" (crystalline zeolites C 01 B 39/00) [6] |
| << C01B 15/00 - C01B 21/50 | ^ | C01B 35/00 - C01B 39/54 >> |