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    이온성 용매를 이용한 2,2,2-트리플루오로에탄올의 제조방법
    98.
    发明授权
    이온성 용매를 이용한 2,2,2-트리플루오로에탄올의 제조방법 失效
    使用离子溶剂生产2,2,2-三氟乙醇的方法

    公开(公告)号：KR100545715B1

    公开(公告)日：2006-01-24

    申请号：KR1020020084483

    申请日：2002-12-26

    Applicant: 한국과학기술연구원

    Inventor： 이현주 ,  김경환 ,  김홍곤 ,  김훈식 ,  박건유

    IPC: C07C29/124

    Abstract: 본 발명은 하기 화학식 1로 표시되는 이미다졸륨계열의 이온성 용매 및 염기의 존재 하에 1-클로로-2,2,2-트리플루오로에탄을 가수분해시켜 2,2,2-트리플루오로에탄올을 제조하는 방법으로, 보다 용이한 반응조건에서 빠른 시간 내에 높은 수율로 2,2,2-트리플루오로에탄올을 얻을 수 있다.
    [화학식 1]

    상기 식에서,
    R
    1 와 R
    2 는 각각 독립적으로 C
    1 - C
    8 의 알킬기 또는 벤질기를 나타내고,
    X는 PF
    6 , BF
    4 , NO
    3 , NO
    2 , CH
    3 CO
    2 , CF
    3 CO
    2 또는 CF
    3 SO
    3 를 나타낸다.
    이온성 용매, 1-클로로-2,2,2-트리플루오로에탄, 2,2,2-트리플루오로에탄올

    Abstract translation: 本发明通过在咪唑鎓基的离子溶剂的存在和它的底部分解以乙烷歌手咪唑1-氯-2,2,2-三氟乙烷是由式（1）乙醇2,2,2-三氟表示 可以在更简单的反应条件下在短时间内以高收率获得2,2,2-三氟乙醇。

    옥타플루오로사이클로부탄(ＲＣ３１８)의 제조방법
    99.
    发明授权
    옥타플루오로사이클로부탄(ＲＣ３１８)의 제조방법 失效
    （RC318）的作品

    公开(公告)号：KR100405187B1

    公开(公告)日：2003-11-12

    申请号：KR1020010008494

    申请日：2001-02-20

    Applicant: 한국과학기술연구원

    Inventor： 문동주 ,  정문조 ,  권영수 ,  박건유

    IPC: C07C23/06

    Abstract: PURPOSE: A method for preparing octafluorocyclobutane is provided, to inhibit the production of solid polymer and carbon by preventing the partial overheating due to the exothermic reaction during dimerization of tetrafluoroethylene, thereby improving the production yield and the stability. CONSTITUTION: The method comprises the step of supplying tetrafluoroethylene prepared by the pyrolysis of difluorochloromethane and H2O in the molar ratio of 0.1-10 into a flow layer reactor, to allow the dimerization of tetrafluoroethylene to be carried out. Preferably the flow layer reactor(13) is provided with a nozzle supplying steam. Tetrafluoroethylene is prepared at the difluorochloromethane pyrolysis device comprising a preheater(2), a super heating unit(4), a cooler and a tetrafluoroethylene distillation tower(12); is purified at the distillation tower after passing a HCl absorption tower(8), a NaOH neutralization tower(9) and a dryer(10); and is supplied into the flow layer reactor from the center of the distillation tower. Preferably the reaction temperature is 550-700 deg.C, and the reaction contact time is 1-30 sec.

    Abstract translation: 目的：提供一种制备八氟环丁烷的方法，通过防止由于四氟乙烯二聚过程中的放热反应引起的部分过热而抑制固体聚合物和碳的生成，从而提高产量和稳定性。 构成：该方法包括将通过将二氟氯甲烷和H 2 O以0.1-10的摩尔比热解而制备的四氟乙烯供入流动层反应器中的步骤，以允许进行四氟乙烯的二聚。 优选地，流动层反应器（13）设置有供应蒸汽的喷嘴。 在包括预热器（2），超级加热单元（4），冷却器和四氟乙烯蒸馏塔（12）的二氟氯甲烷热解装置处制备四氟乙烯; 在通过HCl吸收塔（8），NaOH中和塔（9）和干燥器（10）之后在蒸馏塔中纯化; 并从蒸馏塔的中心供应到流动层反应器中。 优选反应温度为550-700℃，反应接触时间为1-30秒。

    티타늄 금속 또는 티타늄 합금으로 구성된 임플란트의전기화학적 기능성 표면처리방법
    100.
    发明授权
    티타늄 금속 또는 티타늄 합금으로 구성된 임플란트의전기화학적 기능성 표면처리방법 失效
    티타늄금속또는티타늄합금으로구성된임플란트의전기화학적기능성표면처리방티

    公开(公告)号：KR100402919B1

    公开(公告)日：2003-10-22

    申请号：KR1020010063409

    申请日：2001-10-15

    Applicant: 한국과학기술연구원

    Inventor： 조병원 ,  조원일 ,  김형선 ,  김운석 ,  박건유 ,  윤경석

    IPC: C23C22/00

    Abstract: PURPOSE: A surface treatment method of forming a porous oxide coating film having superior biocompatibility with bone, chemical and physical stabilities, uniformed pore distribution, expanded pore size and smooth surface characteristics on the surface of implants comprising metallic titanium or titanium alloys is provided. CONSTITUTION: The electrochemical surface treatment method of implants comprising metallic titanium or titanium alloys comprises the processes of pre-treating the surface of implants comprising metallic titanium or titanium alloys; forming an oxide coating film on the surface of the implants by electrochemically oxidizing the pre-treated implants; and post-treating the formed oxide coating film with an acid or alkaline aqueous solution to obtain uniformed pore distribution, wherein the pre-treatment process comprises the steps of degreasing the implants using acetone or alcohol; water washing the implants taken out of the aqueous solution by taking the implants out of the aqueous solution after dipping the degreased implants into a NaOH aqueous solution or KOH aqueous solution having a concentration of 30 g/liter at 80 deg.C for 5 minutes, pickling the water washed implants in a solution comprising 15 mL of concentrate nitric acid having a concentration of 61 wt.%, 3 mL of hydrofluoric acid having a concentration of 49 wt.% and 82 mL of distilled water at an ordinary temperature for 5 minutes, and washing the implants with distilled water for 10 minutes.

    Abstract translation: 目的：提供一种形成多孔氧化物涂层膜的表面处理方法，所述多孔氧化物涂层膜具有优异的与骨的生物相容性，化学和物理稳定性，均匀的孔分布，扩大的孔径和在包含金属钛或钛合金的植入物表面上的平滑表面特征。 构成：包含金属钛或钛合金的植入物的电化学表面处理方法包括预处理包含金属钛或钛合金的植入物表面的过程; 通过电化学氧化预处理的植入物在植入物的表面上形成氧化物涂层膜; 并用酸性或碱性水溶液对所形成的氧化物涂膜进行后处理以获得均匀的孔分布，其中所述预处理方法包括使用丙酮或醇将所述植入物脱脂的步骤; 将脱脂的植入物在80℃下浸入浓度为30g / l的NaOH水溶液或KOH水溶液中5分钟之后，通过将植入物从水溶液中取出而从水溶液中取出植入物， 在含有浓度为61重量％的15毫升浓硝酸，浓度为49重量％的3毫升氢氟酸和82毫升蒸馏水的溶液中，将水洗的植入物在常温下酸洗5分钟 ，并用蒸馏水清洗植入物10分钟。

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