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    • 4. 发明公开
    • 고순도 카프로락탐의 제조 방법
    • 生产高纯度CAPROLACTAM的方法
    • KR1020010081418A
    • 2001-08-29
    • KR1020000006824
    • 2000-02-14
    • 주식회사 효성
    • 이창황이시근
    • C07D223/10
    • PURPOSE: A method for producing high purity caprolactam is provided, thereby methylcyclopentanone existing in cyclohexanone as an impurity can be removed to a certain concentration, so that the caprolactam can be cheaply produced. CONSTITUTION: The method for producing high purity caprolactam comprises the steps of: partially hydrogenating benzene to produce cyclohexane using ruthenium catalysts; hydrating cyclohexane to produce cyclohexanol using solid acid catalysts; dehydrogenating cyclohexanol to produce cyclohexanone using copper or Fe/ZnO catalysts; treating cyclohexanone with oxim to produce cyclohexanone oxim; and treating cyclohexanone oxim with beckman dislocation to produce caprolactam. Wherein, more than 50% of cyclohexanol is added based on the total content of cyclohexanol before the separation step of cyclohexanol and cyclohexane and its other portion is added before the dehydrogenation step.
    • 目的:提供高纯度己内酰胺的制造方法,可以将作为杂质的环己酮中存在的甲基环戊酮除去一定浓度,能够廉价地制造己内酰胺。 构成:生产高纯度己内酰胺的方法包括以下步骤:使用钌催化剂部分氢化苯以制备环己烷; 使用固体酸催化剂水解环己烷以制备环己醇; 使用铜或Fe / ZnO催化剂脱氢环己醇制备环己酮; 用环氧乙烷处理环己酮制备环己酮肟; 并用贝克曼脱位处理环己酮肟以制备己内酰胺。 其中,在脱氢步骤之前,在环己醇和环己烷分离步骤之前,加入环己醇的总量超过50%,其余部分加入其中。
    • 5. 发明公开
    • 올레핀 중합용 지글러-나타 고체 촉매의 제조방법 및 이를 이용한 폴리올레핀의 제조방법
    • 制备用于烯烃聚合的ZIEGLER-NATTA固体催化剂的方法和使用该聚合物制备聚烯烃的方法
    • KR1020000032668A
    • 2000-06-15
    • KR1019980049211
    • 1998-11-17
    • 주식회사 효성
    • 김정호이시근이용성
    • C08F4/06
    • C08F110/06C08F10/00
    • PURPOSE: A preparation method of a Ziegler-Natta catalyst using an alkoxide compound of a magnesium metal, titanium tetrachloride and an alkylbenzene compound as a starting compound and preparation method of polypropylene using the same are provided which give a catalyst having high polymerization activity and a propylene having various properties and molecular weight dispersions. CONSTITUTION: Polypropylene having high activity, stereo regularity and large particles is manufactured, wherein magnesium diethoxide is dispersed in alkylbenzene, the dispersed solution is contacted with an alkylbenzene solution containing titanium tetrachloride in an amount of less than one time and added with phthaloylchloride, stirred at 80-125°C for 1-10 hr and a liquid phase of a reactant is removed to give a solid phase part of the reactant, the solid compound is washed with an alkylbenzene solvent, contacted with the alkylbenzene solution containing titanium tetrachloride in an amount of less than one time followed by repeating the procedure, washed five times with a heptane solution at 80°C to remove the titanium tetrachloride and an organic matter.
    • 目的:提供使用镁金属,四氯化钛和烷基苯化合物的醇盐化合物作为起始化合物的齐格勒 - 纳塔催化剂的制备方法和使用其的制备聚丙烯的制备方法,其得到具有高聚合活性的催化剂和 具有各种性质和分子量分散体的丙烯。 构成:制造具有高活性,立体规则性和大颗粒的聚丙烯,其中二乙醇镁分散在烷基苯中,分散溶液与少于一次的四氯化钛的烷基苯溶液接触,并加入邻苯二甲酰氯,在 80-125℃下1-10小时,除去反应物的液相,得到固相部分反应物,固体化合物用烷基苯溶剂洗涤,与含有四氯化钛的烷基苯溶液接触,其量为 少于1次,然后重复该过程,在80℃下用庚烷溶液洗涤5次以除去四氯化钛和有机物。
    • 7. 发明授权
    • 고순도 카프로락탐의 제조 방법
    • 生产高纯度己内酰胺的方法
    • KR100359206B1
    • 2002-11-04
    • KR1020000006824
    • 2000-02-14
    • 주식회사 효성
    • 이창황이시근
    • C07D223/10
    • 본 발명은 벤젠의 부분수소화 반응에 의해 얻어진 시클로헥센을 수화반응에 의해 시클로헥사놀로 변환하고, 탈수소반응에 의해 시클로헥사논으로, 다시 옥심화반응에 의해 시클로헥사논옥심으로, 다시 벡만(Beckmann)전위시켜 카프로락탐을 제조하는 방법에 있어서, 일정부분의 시클로헥사놀은 시클로헥사놀과 시클로헥사논의 분리공정 직전에 투입하고, 나머지 부분은 탈수소공정 직전에 투입하여 정제된 시클로헥사논에 불순물로 포함되어 있는 메틸시클로펜타논의 함량을 조절하고 시클로헥사놀과 시클로헥사논의 분리공정의 부하를 줄임을 특징으로 하는 고순도 카프로락탐의 제조방법에 관한 것으로, 시클로헥사논에 불순물로서 존재하는 메틸시클로펜타논을 초기분에 대비하여 임의의 농도까지 제거함과 동시에 증류탑의 투자비 및 운전비를 � ��감하는 효과를 가져 올 수 있다.
    • 8. 发明公开
    • 폴리옥시테트라메틸렌글리콜 또는 옥시 테트라메틸렌기를 함유하는 공중합 폴리에테르글리콜의 평균 분자량 감소방법
    • 含有多羟基聚乙二醇或聚氧乙烯乙烯基团的共聚聚乙二醇的平均分子量的方法
    • KR1020000045846A
    • 2000-07-25
    • KR1019980062440
    • 1998-12-30
    • 주식회사 효성
    • 김정호이시근이태우
    • C08G65/48
    • C08G65/48C08G65/323C08G2650/14
    • PURPOSE: A method for reducing average molecular weight of copolymerized polyether glycol is provided to exclude the needs on severe conversion of PTMG or PTMG-type polyether glycol to pre-monomer. CONSTITUTION: A method for reducing average molecular weight of PTMG or PTMG-type polyether glycol according to the present invention comprises the steps: a) reacting PTMG or PTMG-type polyether glycol having high molecular weight and perhalobenzoic acid at a temperature of 100 to 250°C for 0.1 to 8 hrs to produce PTMG ester of PTMG-type polyetherglycol ester having a number average molecular weight lower than that of initially charged PTMG or PTMG-type polyether glycol; and b) hydrolyzing or alcohol-added decomposing the said produced PTMG ester of PTMG-typed polyetherglycol ester to obtain PTMG or PTMG-type polyether glycol having low molecular weight.
    • 目的:提供降低共聚聚醚二醇的平均分子量的方法,以排除PTMG或PTMG型聚醚二醇严重转化为预单体的需要。 构成:根据本发明的降低PTMG或PTMG型聚醚二醇的平均分子量的方法包括以下步骤:a)使具有高分子量的PTMG或PTMG型聚醚二醇与100%至250的温度下的全卤代苯甲酸反应 ℃下进行0.1〜8小时,得到数均分子量低于初始加入的PTMG或PTMG型聚醚二醇的PTMG型聚醚二醇酯的PTMG酯; 和b)水解或加醇分解所生产的PTMG型聚乙二醇酯的PTMG酯,得到低分子量的PTMG或PTMG型聚醚二醇。