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公开(公告)号：KR100408079B1
公开(公告)日：2003-12-01
申请号：KR1020000073685
申请日：2000-12-06
IPC: C01F7/46
Abstract: PURPOSE: A preparation method of alumina sol using waste aluminum chloride solution as a raw material unlike a conventional sol is provided to save production cost and control particle size of alumina sol. The resultant alumina sol is used for coating agents, catalyst carriers, binders, etc. CONSTITUTION: The preparation method is as follows: adding 5-40wt.% of alkali solution, such as NaOH or NH4OH, to 5-15wt.% of waste aluminum chloride(AlCl3) solution to precipitate aluminum hydroxide(Al(OH)3); aging at 20-100deg.C for 0.1-24hrs.; washing and filtering the precipitates, and optionally partial drying at 20-100deg.C for 0.1-24hrs. to control the size of sol; peptizing with 0.01-2M/Al 1M of acid, such as CH3COOH, HCl, etc., by stirring for 2hrs. at room temperature to form alumina sol with boehmite(AlOOH) crystal structure; thermal treating the obtained slurry at 80-130deg.C for 5-30hrs. for alumina sol. The transparent alumina sol is used for coating agents, and the opaque alumina sol is used for porous coating agents, catalyst carriers, high temperature binders, etc.
Abstract translation: 目的：提供不同于传统溶胶的使用废氯化铝溶液作为原料的氧化铝溶胶的制备方法，以节省生产成本和控制氧化铝溶胶的粒度。 所得氧化铝溶胶用于涂层剂，催化剂载体，粘合剂等。组成：制备方法如下：将5〜40wt。％的碱溶液，如NaOH或NH 4 OH，加入5〜15wt。％的废物 氯化铝（AlCl3）溶液以沉淀氢氧化铝（Al（OH）3）; 在20-100℃老化0.1-24小时; 洗涤并过滤沉淀物，并任选地在20-100℃下部分干燥0.1-24小时。 控制溶胶的大小; 通过搅拌2小时用0.01-2M / Al 1M的酸如CH3COOH，HCl等进行胶溶。 在室温下形成具有勃姆石（AlOOH）晶体结构的氧化铝溶胶; 在80-130℃热处理所得浆料5-30小时。 用于氧化铝溶胶。 透明氧化铝溶胶用于涂布剂，不透明氧化铝溶胶用于多孔涂布剂，催化剂载体，高温粘合剂等。
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公开(公告)号：KR100383220B1
公开(公告)日：2003-05-12
申请号：KR1020000033020
申请日：2000-06-15
Applicant: 한국화학연구원
Abstract: A shaped electron beam column focuses electrons from an electron source (102) to produce a shadow image (114) of a shaped aperture (104) on a writing plane (108). The shadow image of the shaped aperture is the defocused image of a shape aperture. This defocused shadow image is in the object plane (112) of the shaped electron beam column. The shadow image in the writing plane is defocused because an electron beam lens (106) produces a focused image (110) of the electron source off the writing plane. The size of the shadow image on the writing plane may be altered by adjusting the electron beam lens to change the distance between the electron source image and the writing plane, i.e., defocus. Thus, a relatively large shaped aperture may be used in comparison to shaped apertures used in conventional electron beam columns. Further, only a small total linear demagnification may be used, which permits the length of the shaped electron beam column to be decreased. Consequently, the electron-electron interactions are reduced resulting in increased edge resolution of the image on the writing plane and increased current in the shaped electron beam column thereby increasing throughput.
Abstract translation: 成形电子束柱聚焦来自电子源（102）的电子以在写入平面（108）上产生成形孔（104）的阴影图像（114）。 成形孔径的阴影图像是形状孔径的散焦图像。 该散焦阴影图像位于成形电子束列的物平面（112）中。 由于电子束透镜（106）从写入平面产生电子源的聚焦图像（110），因此书写平面中的阴影图像散焦。 通过调整电子束透镜以改变电子源图像和写入平面之间的距离，即散焦，可以改变写入平面上的阴影图像的尺寸。 因此，与常规电子束柱中使用的成形孔相比，可以使用相对较大的成形孔。 此外，可以只使用小的总线性缩小，这允许成形电子束柱的长度减小。 因此，电子 - 电子相互作用降低，导致写平面上的图像的边缘分辨率增加，并且成形电子束列中的电流增加，从而增加吞吐量。
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公开(公告)号：KR1020020009018A
公开(公告)日：2002-02-01
申请号：KR1020000042165
申请日：2000-07-22
Applicant: 한국화학연구원
IPC: C08G77/06
Abstract: PURPOSE: Provided is a polymethylsilsesquioxane(PMSSQ) copolymer containing uniformly dispersed dimethylsiloxane, which is excellent in heat-resistance and flexibility and used as a base material of an insulating film in terms for a semiconductor. CONSTITUTION: The PMSSQ copolymer is produced by a process comprising the steps of: preparing a ligand-exchanged alkoxysilane compound by heat-treating a mixture solution comprising methyltrialkoxy silane and dimethyl dialkoxy silane in the molar ratio of 0.95:0.05-0.70:0.30 at a temperature of 70-150deg.C; sol-gel reacting the ligand exchanged alkoxysilane compound in an organic solvent comprising tetrahydrofuran and toluene at 0-60deg.C by using water and an acid; and adding ammonia water solution to the solution to neutralize the solution. The each unit of the dimethylsiloxane is dispersion-bonded to the skeleton of methylsiloxane.
Abstract translation: 目的：提供含有均匀分散的二甲基硅氧烷的聚甲基倍半硅氧烷（PMSSQ）共聚物，其耐热性和柔韧性优异，并用作半导体用绝缘膜的基材。 构成：PMSSQ共聚物通过包括以下步骤的方法生产：包括以下步骤制备配体交换的烷氧基硅烷化合物：通过热处理包含甲基三烷氧基硅烷和二甲基二烷氧基硅烷的混合溶液，摩尔比为0.95:0.05-0.70:0.30 温度70-150℃; 溶胶 - 凝胶使配合物交换的烷氧基硅烷化合物在含有四氢呋喃和甲苯的有机溶剂中在0-60℃下通过使用水和酸反应; 并向溶液中加入氨水溶液中和溶液。 二甲基硅氧烷的每个单元分散结合到甲基硅氧烷的骨架上。
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公开(公告)号：KR1020020005227A
公开(公告)日：2002-01-17
申请号：KR1020000036570
申请日：2000-06-29
Applicant: 한국화학연구원
IPC: C01G23/053
CPC classification number: C01G23/0536 , C01G23/08 , C01P2006/20
Abstract: PURPOSE: A high concentration and crystalline titania(TiO2) sol with excellent hydrophilic and lipophilic properties is provided, which has stable dispersity in both aqueous solution and organic solvent, improved coating characteristics by adding TiCl4 to mixed solvent(aqueous solution+organic solvent) and hydrolyzing. The resultant TiO2 sol is used for coatings, photocatalysts and cosmetics. CONSTITUTION: The preparation method comprises the steps of: primary hydrolyzing TiCl4, being in a molar ratio of TiCl4/aqueous solution being 0.2-0.3, in a mixed solvent containing aqueous solution and organic solvent in a molar ratio of 0.5-4 for TiO2 sol, where the organic solvent is selected from ethyl alcohol, methyl alcohol and tetrahydrofuran(THF); removing an unreacted mixed-solvent and a by-product(HCl) for a resin type solid TiO2; secondary hydrolyzing in an aqueous solution, being in a molar ratio of water/ TiO2 compound more than 10, and thermal treating at 20-90deg.C to get crystalline TiO2 particles; dissolving TiO2 into aqueous solution and concentration to be 30-50% of concentration. The resultant TiO2 sol are stably dispersed into both water and organic solvent due to hybrid structure, that is, hydroxide and organic functional groups are bonded to Ti ion.
Abstract translation: 目的：提供具有优异亲水性和亲油性的高浓度和结晶二氧化钛（TiO2）溶胶，其在水溶液和有机溶剂中均匀分散，通过向混合溶剂（水溶液+有机溶剂）中加入TiCl 4和改善涂料特性， 水解。 所得TiO 2溶胶用于涂料，光催化剂和化妆品。 构成：制备方法包括以下步骤：在含有水溶液的混合溶剂中，TiCl4 /水溶液的摩尔比为0.2-0.3的TiCl4与TiO 2溶胶的摩尔比为0.5-4的有机溶剂 其中有机溶剂选自乙醇，甲醇和四氢呋喃（THF）; 除去未反应的混合溶剂和用于树脂型固体TiO 2的副产物（HCl）; 在水溶液中二次水解，水/ TiO 2化合物的摩尔比大于10，在20-90℃热处理得到结晶TiO 2颗粒; 将TiO2溶解在水溶液中，浓度为浓度的30-50％。 所得TiO 2溶胶由于混合结构而稳定地分散在水和有机溶剂中，即氢氧化物和有机官能团与Ti离子键合。
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Patent Agency Ranking
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公开(公告)号：KR1019950003217A
公开(公告)日：1995-02-16
申请号：KR1019930014253
申请日：1993-07-27
Applicant: 한국화학연구원
Abstract: 본 발명은 폐기물을 이용한 다공질 세라믹 재료의 제조방법에 관한 것으로서, 더욱 상세하게는 세라믹 원료에 결합제로서 펄프폐액, 기공매체로서 폐펄프, 폐합성 수지 또는 폐고무를 혼합 및 소성처리하여 제조함으로써 경량성, 단열성, 내화성 및 흡음성등 제반성능이 매우 우수하게 개선된 새로운 다공질 세라믹 재료에 관한 것이다.
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公开(公告)号：KR1019910002698B1
公开(公告)日：1991-05-03
申请号：KR1019880009714
申请日：1988-07-30
Applicant: 한국화학연구원
IPC: C01F7/06
Abstract: An ultrafine alumina particles are prepared by (a) of adding hydrochloric acid or ammonium chloride to aluminum hydroxide obtained by the Bayer Method, (b) mixing and calcining the mixt. at the temp. of 1000 deg.C or more, (c) putting ball, alumina and water into ball mill at the ratio of 1.8:1.2:1-2:1:1, and (d) crushing the mixt. to produce the alumina of 1 micron or less. The alumina is used for electric-insulating muterials and refractory muterials.
Abstract translation: 通过（a）向通过拜尔法得到的氢氧化铝中加入盐酸或氯化铵，（b）混合和煅烧该混合物，制备超细氧化铝颗粒。 在温度 （c）以1.8：1.2：1-2：1：1的比例将球，氧化铝和水投入球磨机，（d）粉碎混合物。 以生产1微米或更小的氧化铝。 氧化铝用于电绝缘和耐火杂种。
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