Patents
Sitemap › C01 - Inorganic chemistry › C01C - Ammonia; Cyanogen; Compounds thereof › C01C 3 - Cyanogen; Compounds thereof
Patents for C01C 3 - Cyanogen; Compounds thereof (1,688)
12/1989
12/20/1989EP0347045A1 Process for producing cyanamide from calcium cyanamide
12/13/1989EP0345925A1 Process and apparatus for producing hydrogen cyanide
12/05/1989US4885150 Stable thiocyanogen composition
11/1989
11/08/1989EP0340909A1 Process for the production of hydrogen cyanide by the vapour phase catalytic ammoxidation of methanol
09/1989
09/26/1989US4869889 Process for the production of hydrogen cyanide
09/26/1989CA1260011A1 Preparation of the reaction products of hydrogen cyanide
09/13/1989EP0332394A1 Electrosynthesis of sodium dithionite
08/1989
08/02/1989CN1034349A Method of recovery of ammonium thiocyanate
08/01/1989US4853190 Having increased number of tubes with varied geometric dimensions;
07/1989
07/18/1989US4849197 Process for the preparation of calcium cyanamide
07/11/1989US4847062 Process for production of sodium cyanide
07/11/1989US4846997 Stable suspensions of sodium hydrogen cyanamide
07/05/1989EP0323129A1 Process for preparing iron-antimony-phosphorus-containing catalyst for fluidized bed process
07/05/1989EP0322796A1 Production method of hydrocyanic acid
06/1989
06/07/1989EP0319192A2 Process for producing a phosphorus-antimony-containing cata- lyst for oxidation of organic compounds
05/1989
05/24/1989DE3800546C1 Method for preparing potassium dicyanoaurate
05/23/1989US4832930 Formation of carbon dioxide, sulfur and sulfur dioxide
05/11/1989DE3834907A1 Alumina tubes and process for their manufacture
05/03/1989EP0194449B1 Process for the preparation of aqueous ammonium sulphocyanide solutions
04/1989
04/12/1989EP0311334A1 Process for maintaining high level of yield of acrylonitrile and hydrogen cyanide in ammoxidation of propylene
04/05/1989CN1032148A Process for production of sodium cyanide
03/1989
03/29/1989EP0309126A1 Process for the production of sodium cyanide
03/22/1989CN1031823A Preparation of potassium ferrocyanide by ion-exchange technology
03/08/1989CN1031515A Treatment of cyanide precipitates
02/1989
02/14/1989US4804631 Method and apparatus for measuring cyanide
01/1989
01/18/1989EP0299175A1 Process for the production of hydrogen cyanide
12/1988
12/28/1988CA1247316A Sodium cyanide briquetting
12/14/1988EP0294613A1 Process and plant for continuous production of chlorosulphonyl isocyanate
12/07/1988EP0293737A2 Ammonia separation using semipermeable membranes
09/1988
09/27/1988US4774352 Metal oxide catalysts
08/1988
08/16/1988CA1240521A1 Recovery of cyanide from waste waters by an ion exchange process
08/09/1988US4762535 Ammonia separation using semipermeable membranes
07/1988
07/19/1988US4758413 Reactive resins useful for precious metal recovery
07/12/1988US4757038 Regeneration of iron-antimony metallic oxide catalysts
05/1988
05/25/1988CN87106254A Alkaline ferro-cyanide produced by hydrogen cyanide process
05/17/1988US4745207 Preparation of the reaction products of hydrogen cyanide
05/17/1988CA1236683A1 Process for removal of hcn from gaseous streams
05/04/1988EP0265513A1 Method and apparatus for measuring cyanide.
03/1988
03/22/1988US4732609 Water treatment, complexing
03/10/1988DE3630492A1 Process for preparing an alkali metal or NH4 iron hexacyanoferrate of a particular particle size
02/1988
02/23/1988US4726939 Process for the removal of mercury from precious metal-cyanide liquors
01/1988
01/13/1988CN87202095U Cone-bottem colse-type asphalt-heating pot
12/1987
12/29/1987US4716247 From hydrazine, hydrogen cyanide and sulfur
12/22/1987US4714602 Process for the preparation of solid sodium hydrogen cyanamide
11/1987
11/24/1987US4709071 Heating with tellurium, tellurium or molybdenum compound
11/24/1987US4709070 Process for improving activity of tellurium containing metal oxide catalysts
11/05/1987WO1987006696A1 Method and apparatus for measuring cyanide
10/1987
10/29/1987DE3613954A1 Bis(1-cyano-2-hydroxy-2-methylpropyl)amine, process for its preparation, and its use for storing HCN and as an HCN donor
10/07/1987EP0239790A2 Stable thiocyanogen composition and method for preparing the same
09/1987
09/15/1987US4693877 Cleavage of formamide to give hydrocyanic acid and water
09/01/1987CA1226294A1 Catalysts for the polymerization of epoxides and process for the preparation of such catalysts
07/1987
07/22/1987EP0229407A1 Process for removal of particulates and iron cyanide complex
05/1987
05/12/1987CA1221524A1 Method of preparing sulfonylisocyanates
01/1987
01/21/1987EP0209039A2 Process for the decomposition of formamide into cyanic acid and water
01/10/1987CN85101846A Method for removing sulfate from electrolytic brine
01/07/1987CN85106171A Method of production of sodium perrocyanide without wastewater
12/1986
12/02/1986US4626423 Process for the production of alkalithiocyanate
11/1986
11/25/1986US4625061 Process for preparing cyanamide
11/25/1986US4624837 Particulates and iron cyanide complex removal
11/19/1986CN85108796A Removal of hcn from gaseous streams
11/04/1986CA1213603A1 Process for producing alkali metal cyanates
10/1986
10/29/1986EP0199204A2 Process for the preparation of alkali thiocyanate
10/28/1986CA1213150A1 Recovery of precious metals
10/28/1986CA1213123A1 Process and apparatus for producing hydrogen cyanide
10/21/1986US4618593 Impregnation with tellurium containing solution
10/15/1986EP0197465A2 Solid electrochemically reactive materials and thin-film devices using the same
10/15/1986EP0197216A2 Sodium cyanide briquetting
09/1986
09/30/1986CA1212075A1 Iron (iii) hexacyanoferrate (ii) film and its process of synthesizing same
09/17/1986EP0194449A2 Process for the preparation of aqueous ammonium sulphocyanide solutions
06/1986
06/18/1986EP0184694A1 Process for the preparation of reaction products of hydrogen cyanide
06/10/1986US4594234 Process and apparatus for the production of hydrogen cyanide
05/1986
05/27/1986CA1205091A1 Process for producing nitrilotriacetonitrile
04/1986
04/08/1986CA1202949A1 Catalysts for the oxidation and ammoxidation of alcohols
04/08/1986CA1202948A1 Catalysts for the oxidation and ammoxidation of alcohols
03/1986
03/25/1986CA1202325A1 Solid cyanamide with improved storage stability
03/04/1986CA1201423A1 Process for the polymerization of epoxides
02/1986
02/25/1986US4572826 Two stage process for HCN removal from gaseous streams
01/1986
01/10/1986CN85100373A Process for producing refined salt and na2so4 with oresalt dissolved halogen
11/1985
11/12/1985CA1196472A1 Process for the production of hydrocyanic acid from carbon monoxide and ammonia
10/1985
10/22/1985CA1195479A1 Process for adsorption
10/16/1985EP0158119A2 HNCO Manufacture by adiabatic air oxidation of HCN
10/08/1985US4545966 Cuprous aluminum cyano trichloride: CuAl(CN)Cl3 : its preparation and use for the reversible complexing of unsaturated ligands
10/02/1985EP0156421A1 Process for preparing cyanamide
09/1985
09/17/1985US4542006 Rhodium, platinum, palladium or monel catalyst, from nitrogen oxides, carbon monoxide and hydrogen
09/03/1985CA1192725A1 Tube furnace for carrying out gas reactions
08/1985
08/27/1985US4537628 Recovery of precious metals
08/20/1985US4536483 Adding solid moybednum component
07/1985
07/02/1985CA1189844A1 Process for improving activity of tellurium containing metal oxide catalysts
06/1985
06/04/1985US4521395 Process for oxidation and ammoxidation
05/1985
05/14/1985US4517133 Method of preparing sulfonyl isocyanates
05/08/1985EP0139984A1 Process for adsorption
05/07/1985CA1186696A1 Process for producing thiosemicarbacide
04/1985
04/30/1985CA1186423A1 Thiosulfate removal from aqueous streams
04/30/1985CA1186129A1 Process for the production of cyanogen chloride from hydrocyanic acid and chlorine
04/16/1985US4511548 Complex oxide catalyst
03/1985
03/05/1985US4503025 Process for preparing dicyanogen
02/1985
02/05/1985US4497784 Solution removal of HCN from gaseous streams, with hydrolysis of thiocyanate formed
02/05/1985CA1181924A1 Stable isocyanic acid compositions
01/1985
01/29/1985US4496529 Preparation of metal cyanates from alkyl carbamates
01/22/1985US4495107 Process for producing alkali metal cyanates
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