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Process for the production of tris (hydroxymethyl) aminomethane crystals

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专利汇可以提供Process for the production of tris (hydroxymethyl) aminomethane crystals专利检索,专利查询,专利分析的服务。并且1,050,586. Tris(hydroxymethyl)aminomethane. COMMERCIAL SOLVENTS CORPORATION. Feb. 3, 1965 [March 2, 1964], No. 4651/65. Heading C2C. Tris(hydroxymethyl)aminomethane (designated as T.A.) is produced by a process comprising crystallizing T.A. from an aqueous solution in a crystallizer, preferably a continuous evaporative type, separating the crystals from the mother liquor, evaporating the mother liquor to a melt of T.A., and solvent extracting the melt with a C 1 to C 5 alkanol, preferably with butanol, and preferably recirculating the solvent-extracted T.A. to the crystallizer. T.A. may be made by condensing nitromethane with formaldehyde and reducing the product. The detailed description relates to a continuous process which is described with reference to a flow-sheet (not shown).,下面是Process for the production of tris (hydroxymethyl) aminomethane crystals专利的具体信息内容。

1. A PROCESS FOR THE PRODUCTION OF TRIS(HYDROXYMETHYL) AMINOMETHANE CRYSTALS OF RELATIVELY HIGH PURITY AND IN HIGH YIELDS WHICH COMPRISES CRYSTALLIZING TRIS(HYDROXYMETHYL) AMINOMETHANE FROM AN AQUEOUS SOLUTION OF TRIS (HYDROXYMETHYL) AMINOMETHANE IN A CRYSTALLIZER TO EFFECT CRYSTALLIZATION AND PROVIDE A SLURRY OF TRIS(HYDROXYMETHYL) AMINOMETHANE CRYSTALS AND MOTHER LIQUOR, SEPARATING AND RECOVERING THE CRYSTALS FROM SAID SLURRY, EVAPORATING THE MOTHER LIQUOR OBTAINED FROM SAID SEPARATION TO PROVIDE A MELT OF TRIS(HYDROXYMETHYL) AMINOMETHANE, AND SOLVENT EXTRACTING THE MELT WITH A LOWER ALKANOL TO REMOVE IMPURITIES FROM THE MELT AND PRECIPITATE TRIS(HYDROXYMETHYL) AMINOMETHANE.
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