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    • 25. 发明授权
    • Process for the hardening treatment of sintered members
    • 烧结部件的硬化处理方法
    • US06500384B1
    • 2002-12-31
    • US09666435
    • 2000-09-21
    • Toshio YamauchiKunihiko MurataSusumu Nakano
    • Toshio YamauchiKunihiko MurataSusumu Nakano
    • B22F324
    • C23C24/08B22F3/24
    • The present invention provides a process for the hardening treatment of sintered members which can impart sufficient wear resistance thereto at low cost without causing a reduction in dimensional accuracy due to heat distortion. This process for the hardening treatment of sintered members comprises the steps of coating an iron-based sinterable member with a Ni—P alloy powder containing 7 to 13% by weight of phosphorus so as to give a coating weight of 0.1 to 1.2 mg/mm2; sintering the iron-based sinterable member coated with the Ni—P alloy powder at a temperature in the range of 1,000 to 1,300° C.; and hardening the iron-based sintered member by cooling it at a cooling rate of not less than 10° C./min. until a temperature of 200° C. is reached.
    • 本发明提供了一种能够以低成本赋予其足够的耐磨性的烧结构件的硬化处理的方法,而不会导致由于热变形引起的尺寸精度的降低。 用于烧结构件的硬化处理的方法包括以下步骤:用含有7〜13重量%磷的Ni-P合金粉末涂布铁基烧结体,得到涂布重量为0.1〜1.2mg / mm 2 ; 在1000〜1300℃的温度下烧结Ni-P合金粉末涂布的铁基烧结体。 并以不低于10℃/ min的冷却速度进行冷却来硬化铁基烧结体。 直到达到200℃的温度。
    • 27. 发明授权
    • Process for synthesizing metallocene compounds
    • 合成茂金属化合物的方法
    • US5892075A
    • 1999-04-06
    • US936169
    • 1997-09-23
    • Kunihiko MurataJunichi HoriMasahiro Yoshida
    • Kunihiko MurataJunichi HoriMasahiro Yoshida
    • C07F17/00C07F7/00
    • C07F17/00Y10S526/943
    • The object of the invention resides in the development of an improved process for synthesizing metallocene compounds useful as olefin polymerization catalysts.A new process for synthesizing metallocene compounds of formulae (IV) and (IV') comprises a reaction of formula (I) with formula (II) or (II') to afford formula (III) or (III'), and then a reaction of a halogenating agent.In formulae (IV) and (IV') described below, M.sup.1 is a group IV transition-metal atom, L.sup.1 and L.sup.2 can be each other identical or different and are substituted or unsubstituted cyclopentadienyl, substituted or unsubstituted indenyl or substituted or unsubstituted fluorenyl groups, B is a hydrocarbon having 1-20 carbon atoms, silylene having 1-20 carbon atoms, oligosilylene or germylene groups, binding to L.sup.1 and L.sup.2, Y can be identical or different and is each independently of one another a halogen atom. Further, M.sup.1 can be coordinated with an ether or an amine at any coordination number. ##STR1##
    • 本发明的目的在于开发可用作烯烃聚合催化剂的金属茂化合物的改进方法。 用于合成式(IV)和(IV')的茂金属化合物的新方法包括式(I)与式(II)或(II')的反应,得到式(III)或(III'),然后 卤化剂的反应。 在下述式(IV)和(IV')中,M1是IV族过渡金属原子,L1和L2可以彼此相同或不同,并且是取代或未取代的环戊二烯基,取代或未取代的茚基或取代或未取代的芴基 B是具有1-20个碳原子的烃,具有1-20个碳原子的亚甲硅基,低级亚烯基或亚甲硅烷基,与L1和L2结合,Y可以相同或不同,并且各自独立地为卤素原子。 此外,M1可以任何配位数与醚或胺配位。 反应方案2