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Cyanate |
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cyanate [′sīยทə‚nāt]
(inorganic chemistry) A salt or ester of cyanic acid containing the radical CNO. Cyanate a salt or ester of cyanic acid. Cyanate salts, unlike cyanic acid, are very stable compounds: for example, sodium cyanate, NaOCN, has a melting point of 550°C, and potassium cyanate, KOCN, decomposes without melting only at 700°C. The cyanate salts of the alkali metals are soluble in water and insoluble in alcohol and ether. They are produced by the oxidation of the corresponding cyanides by atmospheric oxygen or by the lead oxides PbO or PbO2. They are used in various syntheses, for example, in the production of semicarbazide. Ammonium cyanate, NH4OCN, which was used by F. Wöhler in the first successful synthesis (1828) of an organic compound (urea) from an inorganic compound, may be obtained in an exchange reaction from silver cyanate and ammonium chloride. Esters of cyanic acid exist in two isomeric forms: ROCN and RNCO. The cyanate esters (ROCN) do not have practical importance, while isocyanates (RNCO) are used in industry for the production of polyurethanes and herbicides. (SeeISOCYANATES.) REFERENCESSee references under .Want to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit the webmaster's page for free fun content. |
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No references found | 06-13 PU ISO CYANATES POLYMERIC MDI 105-115 NA [d] 80/20 TDI 110-120 NA [d] PVC RESIN (RAIL CAR) G-P HOMOPAL 32-34 NA [d] PIPE 28-29 NA [d] FILM 35-37 NA [d] COPOLYMER FLOORING 45-47 NA [d] DISPERSION HOMOPOLY 56-60 NA [d] COPOLYMER 60-64 NA [d] CPVC, PIPE COMPOUND 119 NA [d] PVDC EXTRUDABLE 162 NA [d] SILICONES MOLD. Trimerization of cyanates were formed and copper acetylacetonate was used as a catalyst, there were isomerization process after oxiranes were inserted to cyanurate and the oxazolidones were produced from isocyanurates (27). INTRODUCTION Aromatic cyanates are low viscosity resins that can crosslink to form polycyanurate networks by forming thermally stable cyclic triazine rings. |
Cyanates |
Cyan, Magenta Yellow and Black Cyan, Magenta, Jaune Cyan, Magenta, Yellow, Black, Orange and Green Cyan, Yellow, Magenta, Black cyan- cyan- cyan- Cyan-Green Fluorescent Protein Cyan-Magenta-Jaune-Noir Cyan-Magenta-Yellow Cyan-Magenta-Yellow-Key/blacK Cyan-Yellow-Magenta-Black CYANA cyanacethydrazide Cyanacobalamin Cyanacobalamin Cyanacobalamin cyanalcohol cyanamid cyanamid cyanamid cyanamide cyanamide cyanamide Cyanamide process Cyanamide process Cyanamide process cyanate cyanate cyanate Cyanates Cyanauratecyanazine Cyancobalamin Cyancobalamin Cyancobalamin Cyane Cyanea Cyanea capillata Cyaneae insulae Cyanean Cyanerpes Cyanerpes cyanhemoglobin cyanic cyanic acid cyanic acid cyanic acid Cyanic colors cyanid cyanid cyanid cyanidation cyanide cyanide cyanide cyanide Cyanide & Happiness Cyanide and Happiness Cyanide anion Cyanide anion | |||||||
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