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          Lesson 2 Chemical principles and raw materials

          2.2.1 IsocyanatesAs a rule,isocyanates are obtained by the phosgenation of the corresponding primary amines(Fig.2-1).Fig. 2-1 Manufacture of isocyanates by phosgenation of primary aminesAlternatively,phosgene - free manufacturing processes have been devel ......(本文共 32492 字, 11 張圖)     [閱讀本文]>>



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