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    • 2. 发明授权
    • Process for the production of urethanes
    • 生产聚氨酯的工艺
    • US4339592A
    • 1982-07-13
    • US238518
    • 1981-02-26
    • Robert BeckerChristian RaspGunter StammannJohann Grolig
    • Robert BeckerChristian RaspGunter StammannJohann Grolig
    • C07C269/00B01J23/89B01J27/00B01J27/06B01J27/10B01J31/00B01J31/28B01J31/34C07B61/00C07C67/00C07C239/00C07C271/26C07C271/28C07C125/073
    • B01J27/06B01J23/8906
    • A urethane is produced by reacting an organic nitro compound with carbon monoxide and an organic compound containing at least one hydroxyl group in the presence of a catalyst and a co-catalyst. This reaction is conducted in the liquid phase at elevated temperature and pressure. The catalyst employed is an element and/or compound of an element from the group of noble metals of the 8th Secondary Group of the Periodic Table. The co-catalyst used is formed from (1) a component taken from the group consisting of iron oxychloride, a mixture of iron compounds containing iron oxychloride and oxide-chloride combinations and (2) metallic iron or an iron alloy in finely divided or high surface form. The oxides which may be used in the oxide-chloride combinations of co-catalyst component (1) are the oxides and/or oxide hydrates of tetravalent tin, trivalent chromium, hexavalent molybdenum, hexavalent tungsten, pentavalent vanadium, divalent iron and trivalent iron. The chlorides which may be used in this oxide-chloride combination are chlorides of the elements of Groups IIIA, IVA, VA and IB to VIIIB of the Periodic Table and/or hydrochlorides of tertiary amines.
    • 氨基甲酸酯是通过有机硝基化合物与一氧化碳和含有至少一个羟基的有机化合物在催化剂和助催化剂的存在下反应生成的。 该反应在升高的温度和压力下在液相中进行。 所使用的催化剂是来自元素周期表第八族中的贵金属的元素和/或化合物。 所使用的助催化剂由(1)由三氯氧化铁组成的组分,含有氯氧化铁的铁化合物和氧化物 - 氯化物组合的混合物组成的组分和(2)细碎或高分的金属铁或铁合金 表面形式。 可用于助催化剂组分(1)的氧化物 - 氯化物组合的氧化物是四价锡,三价铬,六价钼,六价钨,五价钒,二价铁和三价铁的氧化物和/或氧化物水合物。 可用于该氧化物 - 氯化物组合中的氯化物是元素周期表IIIA,IVA,VA和IB至VIIIB族元素的氯化物和/或叔胺的盐酸盐。