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    • 23. 发明授权
    • Process for purifying acetic acid
    • 乙酸纯化方法
    • US5662780A
    • 1997-09-02
    • US613204
    • 1996-03-06
    • Takaharu SasakiMasayuki FujimotoTakashige MiyanariHiroshi Nishino
    • Takaharu SasakiMasayuki FujimotoTakashige MiyanariHiroshi Nishino
    • C07C51/48B01D3/36
    • C07C51/48
    • A process for purifying acetic acid which comprises: introducing a feedstock aqueous solution of acetic acid having an acetic acid concentration of from 10 to 50% by weight into an extractor; supplying an extracting medium containing isopropyl acetate in an amount from 0.6 to 3.0 times by weight the amount of the feedstock solution thereinto in such a manner that the extracting medium is made in contact with the feedstock solution; extracting acetic acid into the extracting medium; separating the extracting medium containing acetic acid from an extraction residue; supplying the extraction medium containing acetic acid into an azeotropic distillation column; distilling off the isopropyl acetate contained in the extraction medium from a top of the azeotropic distillation column via azeotropic distillation with water; condensing a distillate from the top of the azeotropic distillation column, to divide the distillate into a water-poor phase being rich in isopropyl acetate and a water-rich phase being rich in water; returning at least a portion of the water-poor phase into the extractor as the extracting medium; and recovering the acetic acid, which has been thus dehydrated and purified, from a bottom of the azeotropic distillation column.
    • 一种纯化乙酸的方法,其包括:将乙酸浓度为10至50重量%的乙酸的原料水溶液引入萃取器中; 以提取介质与原料溶液接触的方式,提供含有其中原料溶液量的0.6至3.0倍量的乙酸异丙酯的萃取介质; 将乙酸萃取到萃取介质中; 从提取残渣中分离含有乙酸的提取介质; 将含有乙酸的萃取介质供入共沸蒸馏塔; 通过与水共沸蒸馏从共沸蒸馏塔的顶部蒸馏出萃取介质中所含的异丙基乙酸酯; 将馏出物从共沸蒸馏塔的顶部冷凝,将馏出物分成富含乙酸异丙酯的富水相和富含水的富水相; 将至少一部分无水相返回到提取器中作为提取介质; 并从共沸蒸馏塔的底部回收已经脱水和纯化的乙酸。
    • 27. 发明授权
    • Dielectric ceramic materials with insulated boundaries between crystal
grains, and process for preparation
    • 介电陶瓷材料与晶粒之间具有绝缘边界,以及制备工艺
    • US4405478A
    • 1983-09-20
    • US443781
    • 1982-11-22
    • Kiyoshi MuraseNobutatsu YamaokaMasayuki Fujimoto
    • Kiyoshi MuraseNobutatsu YamaokaMasayuki Fujimoto
    • C04B35/47H01G4/12C04B35/46H01B3/12
    • H01G4/1281C04B35/47
    • A dielectric ceramic material composed of primary and secondary ingredients forming in combination a polycrystalline ceramic proper, and of insulating substances diffused throughout the intergranular boundaries of the ceramic proper for an increase in apparent relative dielectric constant. The primary ingredients comprise, in relative proportions, 90.68-99.88 wt. % SrTiO.sub.3, 0.07-5.32 wt. % Nb.sub.2 O.sub.5, and 0.05-4.00 wt. % GeO.sub.2. The secondary ingredients comprise 0.02-0.10 wt. part SiO.sub.2 and 0.01-0.03 wt. part Al.sub.2 O.sub.3 with respect to 100 wt. parts of the primary ingredients, with the weight ratio of SiO.sub.2 to Al.sub.2 O.sub.3 being from 1.5 to 5.0. The insulating substances comprise 0.03-2.90 wt. % PbO, 0.11-4.34 wt. % Bi.sub.2 O.sub.3, and 0.001-0.18 wt. % B.sub.2 O.sub.3 with respect to the total weight of the primary and the secondary ingredients. In the fabrication of bodies of the ceramic the mixture of the insulating substances is coated or otherwise layered on polycrystalline ceramic bodies prepared from the primary and secondary ingredients. The coated ceramic bodies are then heated to cause diffusion of the insulating substances throughout their intergranular boundaries.
    • 由主要和次要成分组成的介电陶瓷材料,其组合形成多晶陶瓷本身,并且绝缘物质在陶瓷本身的整个晶界处扩散,以增加表观相对介电常数。 主要成分以相对比例包含90.68-99.88wt。 %SrTiO 3,0.07-5.32wt。 %Nb2O5和0.05-4.00wt。 %GeO2。 次要成分包含0.02-0.10wt。 部分SiO2和0.01-0.03wt。 部分Al2O3相对于100wt。 主要成分的一部分,SiO 2与Al 2 O 3的重量比为1.5-5.0。 绝缘物质包含0.03-2.90重量% %PbO,0.11-4.34wt。 %Bi 2 O 3和0.001-0.18wt。 %B2O3相对于初级和次级成分的总重量。 在陶瓷体的制造中,绝缘物质的混合物被涂覆或以其它方式分层在由初级和次级成分制备的多晶陶瓷体上。 然后将涂覆的陶瓷体加热,使绝缘物质扩散到其晶间界面。
    • 28. 发明授权
    • Dielectric ceramic materials with insulated boundaries between crystal
grains, and process for preparation
    • 介电陶瓷材料与晶粒之间具有绝缘边界,以及制备工艺
    • US4405474A
    • 1983-09-20
    • US443775
    • 1982-11-22
    • Kiyoshi MuraseNobutatsu YamaokaMasayuki Fujimoto
    • Kiyoshi MuraseNobutatsu YamaokaMasayuki Fujimoto
    • H01B3/12C04B35/47H01G4/12C04B35/46
    • H01G4/1281C04B35/47
    • A dielectric ceramic material composed of primary and secondary ingredients forming in combination a polycrystalline ceramic proper, and of insulating substances diffused throughout the intergranular boundaries of the ceramic proper for an increase in apparent relative dielectric constant. The primary ingredients comprise in relative proportions, 96.70-99.83 wt. % SrTiO.sub.3, 0.15-2.30 wt. % WO.sub.3, and 0.02-1.00 wt. % CuO. The secondary ingredients comprise 0.02-0.10 wt %. part SiO.sub.2 and 0.01-0.03 wt. part Al.sub.2 O.sub.3 with respect to 100 wt. parts of the primary ingredients, with the weight ratio of SiO.sub.2 to Al.sub.2 O.sub.3 being from 1.5 to 5.0. The insulating substances comprise 0.003-2.83 wt. % PbO, 0.10-4.30 wt. % Bi.sub.2 O.sub.3, and 0.001-0.18 wt. % B.sub.2 O.sub.3 with respect to the total weight of the primary and the secondary ingredients. In the fabrication of bodies of the ceramic the mixture of the insulating substances is coated or otherwise layered on polycrystalline ceramic bodies prepared from the primary and secondary ingredients. The coated ceramic bodies are then heated to cause diffusion of the insulating substances throughout their intergranular boundaries.
    • 由主要和次要成分组成的介电陶瓷材料,其组合形成多晶陶瓷本身,并且绝缘物质在陶瓷本身的整个晶界处扩散,以增加表观相对介电常数。 主要成分包括相对比例为96.70-99.83wt。 %SrTiO 3,0.15-2.30重量% %WO3和0.02-1.00wt。 %CuO。 次要成分占0.02-0.10重量%。 部分SiO2和0.01-0.03wt。 部分Al2O3相对于100wt。 主要成分的一部分,SiO 2与Al 2 O 3的重量比为1.5-5.0。 绝缘物质包含0.003-2.83wt。 %PbO,0.10-4.30wt。 %Bi 2 O 3和0.001-0.18wt。 %B2O3相对于初级和次级成分的总重量。 在陶瓷体的制造中,绝缘物质的混合物被涂覆或以其它方式分层在由初级和次级成分制备的多晶陶瓷体上。 然后将涂覆的陶瓷体加热,使绝缘物质扩散到其晶间界面。
    • 29. 发明授权
    • Dielectric ceramic materials with insulated boundaries between crystal
grains, and process for preparation
    • 介电陶瓷材料与晶粒之间具有绝缘边界,以及制备工艺
    • US4405472A
    • 1983-09-20
    • US443773
    • 1982-11-22
    • Kiyoshi MuraseNobutatsu YamaokaMasayuki Fujimoto
    • Kiyoshi MuraseNobutatsu YamaokaMasayuki Fujimoto
    • H01B3/12C04B35/47H01G4/12C04B35/46
    • C04B35/47H01G4/1281
    • A dielectric ceramic material composed of primary and secondary ingredients forming in combination a polycrystalline ceramic proper, and of insulating substances diffused throughout the intergranular boundaries of the ceramic proper for an increase in apparent relative dielectric constant. The primary ingredients comprise, in relative proportions, 95.18-99.65 wt. % SrTiO.sub.3, 0.33-3.32 wt. % Ta.sub.2 O.sub.5, and 0.02-1.50 wt. % CuO. The secondary ingredients comprise 0.02-0.10 wt. % part SiO.sub.2 and 0.01-0.03 wt. part Al.sub.2 O.sub.3 with respect to 100 wt. parts of the primary ingredients, with the weight ratio of SiO.sub.2 to Al.sub.2 O.sub.3 being from 1.50 to 5.0. The insulating substances comprise 0.03-2.75 wt. % PbO, 0.11-4.22 wt. % Bi.sub.2 O.sub.3, and 0.001-0.18 wt. % B.sub.2 O.sub.3 with respect to the total weight of the primary and the secondary ingredients. In the fabrication of bodies of the ceramic the mixture of the insulating substances is coated or otherwise layered on polycrystalline ceramic bodies prepared from the primary and secondary ingredients. The coated ceramic bodies are then heated to cause diffusion of the insulating substances throughout their intergranular boundaries.
    • 由主要和次要成分组成的介电陶瓷材料,其组合形成多晶陶瓷本身,并且绝缘物质在陶瓷本身的整个晶界处扩散,以增加表观相对介电常数。 主要成分以相对比例包含95.18-99.65wt。 %SrTiO3,0.33-3.32wt。 %Ta2O5和0.02-1.50wt。 %CuO。 次要成分包含0.02-0.10wt。 %部分SiO 2和0.01-0.03重量% 部分Al2O3相对于100wt。 主要成分的一部分,SiO 2与Al 2 O 3的重量比为1.50〜5.0。 绝缘物质包含0.03-2.75重量% %PbO,0.11-4.22wt。 %Bi 2 O 3和0.001-0.18wt。 %B2O3相对于初级和次级成分的总重量。 在陶瓷体的制造中,绝缘物质的混合物被涂覆或以其它方式分层在由初级和次级成分制备的多晶陶瓷体上。 然后将涂覆的陶瓷体加热,使绝缘物质扩散到其晶间界面。