| 单词 | cuprammonium process |
| 释义 | > as lemmascuprammonium process A complex ion of copper and ammonia, Cu(NH3)4++, obtained in solution by adding excess ammonium hydroxide to a solution of a cupric salt; it forms deep blue aqueous solutions which dissolve cellulose and are used industrially, esp. in the manufacture of some man-made fibres. So cuprammonium process, cuprammonium rayon, cuprammonium silk, etc. Also used elliptically for cuprammonium solution. ΘΚΠ the world > matter > chemistry > physical chemistry > solutions > [noun] > containing cuprammonium cuprammonia1862 cuprammonium1862 the world > matter > chemistry > ions, ionization, or electrolysis > [noun] > ion > specific > specific complex ion cuprammonium1862 society > occupation and work > materials > derived or manufactured material > other manufactured or derived materials > [noun] > industrial solution > specific cuprammonium1862 1862 H. Watts tr. L. Gmelin Hand-bk. Chem. XV. 142 Cotton immersed in aqueous biphosphate of cuprammonium becomes first gelatinous, then slippery, and forms an almost transparent gummy liquid. 1888 C. F. Cross & E. J. Bevan Text-bk. Paper-making xvi. 217 The cuprammonium solution. 1907 H. E. Roscoe & C. Schorlemmer Treat. Chem. (ed. 4) II. 435 This dissolves to a deep pure blue liquid containing cuprammonium sulphate, CuSO4, 4NH3, H2O, which was first described by Stisser in 1693 as an arcanum epilecticum and afterwards termed cuprum ammoniacale. 1921 T. Woodhouse tr. J. Foltzer Artificial Silk 29 Despeissis Artificial Silk (Cuprammonium Process). 1921 T. Woodhouse tr. J. Foltzer Artificial Silk 36 Cuprammonium Solution..is a solution of copper oxide in ammonia. It is a blue liquid known to chemists as Schweitzer's reagent. 1925 Good Housek. (U.K. ed.) Apr. 142/2 Cuprammonium silk. 1927 M. H. Avram Rayon Industry 192 The cupra-ammonium solution of cellulose. 1927 M. H. Avram Rayon Industry 497 Cupra-ammonium Rayon. 1939 Thorpe's Dict. Appl. Chem. (ed. 4) III. 355/1 ‘Schweizer's reagent’ or cuprammonium..has the property of dissolving cellulose (cotton wool, linen, filter paper, etc.). 1960 C. W. Wood & A. K. Holliday Inorg. Chem. xiv. 347 The deep blue solution of cuprammonium sulphate deposits crystals..of composition, Cu(NH3)4SO4.H2O. 1964 N. G. Clark Mod. Org. Chem. xvi. 333 One commercial process, giving Cuprammonium Rayon, exploits the ability of an aqueous ammoniacal copper salt solution to dissolve cellulose. < as lemmas |
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