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    • 3. 发明授权
    • Fiber-reinforced ceramic green body and sindered ceramic article obtained therefrom
    • 纤维增强陶瓷生坯和由此得到的陶瓷制品
    • US06218325B1
    • 2001-04-17
    • US09093638
    • 1998-06-09
    • Yuuji MikiAtsushi KoizumiNaoki Itoh
    • Yuuji MikiAtsushi KoizumiNaoki Itoh
    • C04B3580
    • C04B35/593C04B35/5935
    • A fiber-reinforced ceramic green body having enough green strength and handling strength. The fiber-reinforced ceramic green body is obtained by molding a ceramic composition comprising a ceramic powder, a sintering aid powder, an organic fiber, an aqueous dispersion medium and an optional dispersant. The organic fiber is contained in the ceramic green body in an amount of 0.2-3 parts by weight based on 100 parts by weight of a total of the ceramic powder and the sintering aid powder and uniformly dispersed throughout it. The average length of the organic fiber is 300-1000 &mgr;m and the average diameter is 2.5-30 &mgr;m. The organic fiber is preferably a synthetic high polymer such as polyester, nylon, etc., and preferably has a hydrophilic nature imparted by surface treatment.
    • 具有足够的生坯强度和处理强度的纤维增强陶瓷生坯。 纤维增强陶瓷生坯通过模制包含陶瓷粉末,烧结助剂粉末,有机纤维,水性分散介质和任选的分散剂的陶瓷组合物而获得。 有机纤维以陶瓷粉末和烧结助剂粉末的100重量份的0.2-3重量份的量包含在陶瓷生坯中,并均匀地分散在其中。 有机纤维的平均长度为300-1000μm,平均直径为2.5-30μm。 有机纤维优选为聚酯,尼龙等合成高分子,优选具有通过表面处理赋予的亲水性。
    • 7. 发明申请
    • Method for producing tertiary butyl alcohol
    • 叔丁醇生产方法
    • US20070010697A1
    • 2007-01-11
    • US10568614
    • 2004-08-18
    • Atsushi KoizumiAkira Ogawa
    • Atsushi KoizumiAkira Ogawa
    • C07C29/03
    • C07C29/04C12C11/02Y02P20/127C07C31/12
    • The present invention provides a method for producing a tertiary butyl alcohol with a high reaction rate of hydration of isobutylene. Furthermore, the present invention provides a method for producing a tertiary butyl alcohol with a high reaction rate of hydration of isobutylene even in the case of using an isobutylene of low concentration as a raw material. In this method, a tertiary butyl alcohol is produced from isobutylene and water in the presence of a cation-exchange resin catalyst and at least one solvent selected from the group consisting of sulfones and organic carboxylic acids by using a catalytic distillation apparatus. The solvent to be used in the method for producing a tertiary butyl alcohol is preferably sulfolane, dimethyl sulfone or acetic acid.
    • 本发明提供异丁烯的水合反应速度高的叔丁醇的制造方法。 此外,本发明提供了即使在使用低浓度的异丁烯作为原料的情况下,异丁烯的水合反应速度高的叔丁醇的制造方法。 在该方法中,通过使用催化蒸馏装置,在阳离子交换树脂催化剂和至少一种选自砜和有机羧酸的溶剂的存在下,由异丁烯和水制备叔丁醇。 在叔丁醇的制造方法中使用的溶剂优选为环丁砜,二甲基砜或乙酸。