13259-29-5Relevant articles and documents
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Chablay
, p. 150 (1917)
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PROCESS FOR COPRODUCING DI- AND/OR POLYISOCYANATES AND GLYCOLS
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Page/Page column 3, (2012/08/28)
A process for coproducing di- and/or polyisocyanates and glycols, comprising process stages A, B, C and E for preparing glycols and process stages A, C, D, E, F and G for preparing di- and/or polyisocyanates, which comprises accomplishing the material coupling via the separation of the reaction mixture obtained in process stage A into process stages B and C, by in process stage A, reacting an aqueous alkylene oxide with carbon dioxide to give a reaction mixture comprising alkylene carbonate,hydrolyzing a portion of the alkylene carbonate-comprising reaction mixture obtained in process stage A to glycol in process stage B,dewatering the remaining alkylene carbonate-comprising stream of the reaction mixture from process stage A in process stage C,in process stage D, synthesizing amine by hydrogenating an aromatic nitro compound or a nitrile,in process stage E, transesterifying the dewatered alkylene carbonate-comprising mixture from process stage C with a monohydroxy alcohol to give the corresponding dialkyl carbonate, obtaining glycol as a coproduct,in process stage F, reacting the dialkyl carbonate-comprising reaction mixture obtained in process stage E with the amine obtained in process stage D to a mixture comprising the corresponding mono-, di- and/or polycarbamate, whichin process stage G is cleaved to obtain the corresponding di- and/or polyisocyanate.
Solubility of sodium sulfide in alcohols
Kurzin, Alexander V.,Evdokimov, Andrey N.,Golikova, Valerija S.,Pavlova, Olesja S.
experimental part, p. 4080 - 4081 (2011/05/28)
The solubility of sodium sulfide in methanol, ethanol, 2-propanol, 2-methyl-1-propanol, and benzyl alcohol and the acid-base interaction of these compounds have been determined at (20 and 35) °C. The reactions result in the formation of sodium alkoxide and hydrosulfide. The reported values on the solubility of sodium sulfide in alcohols differ essentially from the data described in the literature.