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    • 18. 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。
    • 19. 发明授权
    • Process for the preparation of polyurea greases
    • 聚脲润滑脂的制备工艺
    • US5314982A
    • 1994-05-24
    • US945867
    • 1992-09-17
    • Christian RaspRalf TimmermannHermann PerreyBernhard LehmannSiegfried Kussi
    • Christian RaspRalf TimmermannHermann PerreyBernhard LehmannSiegfried Kussi
    • C08G18/32C10M119/24C10N20/06C10N50/10C10N70/00C08G18/08
    • C08G18/3228C08G18/2865C10M119/24C10M2217/042C10M2217/043C10N2220/02
    • The invention relates to a new three-part process, which can also be employed on a large industrial scale, for the preparation of polyurea lubricating greases, which is characterised(a) in that polyureas which carry oleophilic groups are prepared by reaction of diisocyanates with amines either in the absence of a solvent on a reaction screw at 80.degree.-120.degree. C., preferably at 85.degree.-95.degree. C., (variant A) or in a toluene medium at 20.degree.-80.degree. C., preferably at 30.degree.-60.degree. C., (variant B),(b) in that, after complete reaction, the polyureas prepared according to (a) are ground in the solid, dry state to give powders (at least 70% by weight of the powder having particle sizes of about 100-400.mu.) and(c) in that the ground crude product, after being made into a "paste" (wetted) at elevated temperature in the base oil employed (10-30 minutes at 140.degree.-180.degree. C.) and cooled again to room temperature, is processed to a grease by complete homogenisation--if appropriate in several passes--in a high-pressure homogeniser under a pressure of 400-1,500 bar (spontaneous heating occurring up to about 100.degree. C.),greases having readily reproducible and essentially the same properties as in the case of the previously customary in situ manufacture being produced.
    • 本发明涉及一种新的三部分方法,其也可用于大型工业规模,用于制备聚脲润滑脂,其特征在于(a)通过二异氰酸酯与二异氰酸酯反应制备携带亲油基团的聚脲 在80°-120℃,优选85℃-95℃,(变体A)或在20-80℃的甲苯介质中,在反应螺杆上不存在溶剂的胺,优选 在30°-60℃,(变体B),(b),完全反应后,根据(a)制备的聚脲在固体,干燥状态下研磨,得到粉末(至少70重量% 的颗粒大小为100-400微米的粉末)和(c)因为所研磨的粗产物在所用基础油中在升高的温度下制成“糊”(润湿)(在140℃下10-30分钟 DEG-180℃),并再次冷却至室温,通过完全均化(如果合适的话)在几种情况下加工成润滑脂 在400-1,500巴的压力(自发加热直到约100℃)下进入高压均化器,具有与先前常规原位制造情况相同的容易重复性和基本上相同性质的润滑脂 生产。