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    • 5. 发明公开
    • 하이드록시알킬 (메타)아크릴레이트 제조방법
    • 制备羟基甲基(甲基)丙烯酸酯的方法
    • KR1020090034198A
    • 2009-04-07
    • KR1020070099451
    • 2007-10-02
    • 주식회사 엘지화학
    • 이상기고동현문지중김현규
    • C07C67/04C07C67/48C07C69/54
    • A method for preparing hydroxyalkyl (meth)acrylates is provided to reduce the content of by-products generated in the manufacture of the hydroxyalkyl (meth)acrylates and to obtain the hydroxyalkyl (meth)acrylates of high purity. A method for preparing hydroxyalkyl (meth)acrylates comprises the steps of: (a) reacting an acrylic acid or methacrylic acid, catalyst and alkylene oxide to obtain hydroxyalkyl (meth)acrylates; (b) removing unreacted alkylene oxide from the product including the hydroxyalkyl (meth)acrylates; and (c) purifying the hydroxyalkyl (meth)acrylates from product including the hydroxyalkyl (meth)acrylates from which the unreacted alkylene oxide removed.
    • 提供制备(甲基)丙烯酸羟烷基酯的方法,以减少(甲基)丙烯酸羟烷基酯生产中产生的副产物的含量,并得到高纯度的(甲基)丙烯酸羟烷基酯。 制备(甲基)丙烯酸羟烷基酯的方法包括以下步骤:(a)使丙烯酸或甲基丙烯酸,催化剂和烯化氧反应得到(甲基)丙烯酸羟烷基酯; (b)从包括(甲基)丙烯酸羟烷基酯的产物中除去未反应的环氧烷; 和(c)从包含去除了未反应的氧化烯的(甲基)丙烯酸羟烷基酯的产物纯化(甲基)丙烯酸羟烷基酯。
    • 6. 发明公开
    • 인 화합물을 포함하는 촉매 조성물 및 이를 이용한히드로포르밀화 반응
    • 包含磷配体的催化剂组合物和使用它们的氢化反应
    • KR1020080001221A
    • 2008-01-03
    • KR1020060059405
    • 2006-06-29
    • 주식회사 엘지화학
    • 최재희고동현홍복기문지중권오학엄성식
    • B01J31/16B01J31/00B01J27/14B01J23/46
    • B01J27/14B01J23/46B01J31/16C07C45/50C07F9/46
    • A catalyst composition comprising phosphorous compounds and a hydroformylation reaction using the same are provided to adjust an N/I selectivity to a range from 1 to 30 by controlling the ratio of the two ligands while showing a high catalytic activity. A catalyst composition comprises: (a) a bidentate ligand represented by a formula 1; (b) a bidentate ligand represented by a formula 2; and (c) a transition metal catalyst, wherein in the formula 1, R1 and R2 each denote a substituted or non-substituted monovalent hydrocarbon group capable of comprising at least one hetero atom selected from nitrogen, oxygen and sulfur atoms, Ar1 and Ar2 each denote arylene, R3s each independently denote hydrogen, -R14, -OR14, Si(R14)3, -Si(OR14)3, -C(O)R14, -C(O)OR14, -OC(O)R14, -C(O)N(R14)2, -S(O)2R14, -S(O)R14, -SR14, -N(R15)2, -N(R15)C(O)R15, -P(O)(R15)2, halogen, nitro, cyano, or hydroxy, where each of R14s independently denotes C1-C20-alkyl, C6-C20-aryl, C1-C20-alk-C6-C20-aryl, and C6-C20-ar-C1-C20-alkyl, each of R14s independently denotes hydrogen, C1-C20-alkyl, C6-C20-aryl, C1-C20-alk-C6-C20-aryl, and C6-C20-ar-C1-C20-alkyl, and each of R15s independently denotes hydrogen, C1-C20-alkyl, C6-C20-aryl, C1-C20-alk-C6-C20-aryl, and C6-C20-ar-C1-C20-alkyl, and wherein in the formula 2, Ar3s are identical to or different from one another and each denote a substituted or non-substituted C6-C20-arylene, W denotes a C2-C30 m-valent radical selected from the group consisting of alkylene, alkylene-oxy-alkylene, arylene and arylene-(CH2)y-(Q)n-(CH2)y-arylene, where each arylene is identical to the defined Ar3, y has a value of 0 or 1, and Q each independently denotes a bivalent connecting group selected from the group consisting of a single bond, -CR^16R^17-, -O-, -S-, -NR^18-, -SiR^19R^20- and -CO-, where R^16 and R^17 each independently denote a radical selected from the group consisting of hydrogen, C1-C12-alkyl, phenyl, tolyl and anicyl, R^18, R^19 and R^20 radicals each independently denote -H or -CH, n each has a value of 0 or 1, and m has a value of 2 to 6.
    • 提供了包含磷化合物和使用其的加氢甲酰化反应的催化剂组合物,以通过控制两种配体的比例而显示出高催化活性来将N / I选择性调节至1至30的范围。 催化剂组合物包含:(a)由式1表示的二齿配体; (b)由式2表示的二齿配体; 和(c)过渡金属催化剂,其中在式1中,R 1和R 2各自表示能够包含至少一个选自氮,氧和硫原子的杂原子的取代或未取代的一价烃基,Ar 1和Ar 2各自 表示亚芳基,R 3各自独立地表示氢,-R 14,-OR 14,Si(R 14)3,-Si(OR 14)3,-C(O)R 14,-C(O)OR 14,-OC(O)R 14 - C(O)N(R 14)2,-S(O)2 R 14,-S(O)R 14,-SR 14,-N(R 15)2,-N (R 15)2,卤素,硝基,氰基或羟基,其中R 14各自独立地表示C 1 -C 20 - 烷基,C 6 -C 20 - 芳基,C 1 -C 20 - 烷基-C 6 -C 20 - 芳基和C 6 -C 20 - 芳基 C 1 -C 20烷基,R 14中的每一个独立地表示氢,C 1 -C 20 - 烷基,C 6 -C 20 - 芳基,C 1 -C 20 - 烷基-C 6 -C 20 - 芳基和C 6 -C 20 - 芳基-C 1 -C 20 - 烷基 ,并且R 15中的每一个独立地表示氢,C 1 -C 20 - 烷基,C 6 -C 20 - 芳基,C 1 -C 20 - 烷基-C 6 -C 20 - 芳基和C 6 -C 20 - 芳基-C 1 -C 20 - 烷基,并且其中 式2中,Ar 3相同或不同,各自表示取代或未取代的 C 6 -C 20亚芳基,W表示选自亚烷基,亚烷基 - 氧亚烷基,亚芳基和亚芳基 - (CH 2)y - (Q)n - (CH 2)y - 基的C 2 -C 30 m价基团, 亚芳基,其中每个亚芳基与所定义的Ar 3相同,y具有0或1的值,并且Q各自独立地表示选自单键,-CR 16 R 17 - , - O - , - S - , - NR 18 - , - SiR 19 R 20 - 和-CO-,其中R 16和R 17各自独立地表示选自氢,C 1 -C 12 - 烷基 ,苯基,甲苯基和苯甲酰基,R 18,R 19和R 20基团各自独立地表示-H或-CH,n各自具有0或1的值,m具有2至6的值。
    • 8. 发明授权
    • 이소부티릭산의 제조 방법
    • 异丁酸的制备
    • KR100600226B1
    • 2006-07-13
    • KR1020020074825
    • 2002-11-28
    • 주식회사 엘지화학
    • 이상기고동현문지중엄성식류대선
    • C07C51/235
    • 본 발명은, 이소부틸알데히드를 원료로 하여 액상에서 분자상 산소 함유 가스와 연속적으로 산화시켜 이소부티릭산을 제조하는 방법에 관한 것으로,
      하나의 회분식 반응기를 사용하여 상기 반응기에 이소부틸알데히드를 채우고, 상기 반응기의 초기온도를 0 내지 70 ℃로 설정하고, 상기 반응기에 분자상 산소 함유 가스를 주입하고, 상기 반응기의 반응압력을 상압 내지 10 kg/㎠의 범위 내로 유지하고, 이소부틸알데히드의 전환율이 80 내지 98 %인 시점에서 상기 반응기의 온도를 상승시키는 온도상승단계를 포함하여 이소부티릭산을 제조하는 것을 특징으로 하는 이소부티릭산의 제조방법을 제공하며, 본 발명에 의한 제조방법에 의하면 종래의 2개나 그 이상의 연속식 산화반응에 의하여 제조하는 방법에 비하여 하나의 회분식 반응기 만으로도 반응온도 및 산소의 분압과 비활성 가스의 분압 및 최종 반응압력을 적절히 조절함으로써 1회 전환율을 99 % 이상으로 극대화시키고 이를 통해 이소부틸알데히드의 원료손실을 최소화할 뿐만 아니라 부산물의 발생량을 최소화시켜 고순도의 이소부티릭산을 손쉽게 제조할 수 있는 효과가 있으며, 또한 회분식 반응기내의 반응가스의 분압을 비활성 가스를 가압하여 반응가스와 반응물 또는 반응가스와 생성물간의 몰비율을 폭발범위 이하로 설정함으로써 보다 안전한 영역에서 반응이 진행되도록 하는 효과가 있다.
      이소부틸알데히드, 이소부티릭산, 회분식, 반응온도, 선택도, 전환율
    • 9. 发明公开
    • 이소부티릭산의 제조 방법
    • 制备异丁酸的方法
    • KR1020040046798A
    • 2004-06-05
    • KR1020020074825
    • 2002-11-28
    • 주식회사 엘지화학
    • 이상기고동현문지중엄성식류대선
    • C07C51/235
    • PURPOSE: A method for preparing isobutyric acid is provided to maximize the conversion rate of isobutylaldehyde with using only one batch type reactor, thereby simplifying the whole process and obtaining isobutyric acid with high purity more economically and conveniently. Moreover, by using the method, the reaction can be conducted in the safety range that is out of an explosion range of the reactants and products by adjusting the partial pressure of the reaction gases in the reactor with the pressure of inert gas. CONSTITUTION: The method of preparing isobutyric acid involving the oxidization of isobutylaldehyde in liquid phase by a gas which contains oxygen molecules, comprises: charging one batch type reactor with isobutylaldehyde; setting the initial temperature of the reactor to 0-70 deg.C; injecting the gas which contains oxygen molecules; keeping the reaction pressure in the reactor to the range of normal pressure to 10 kg/cm¬2; raising the temperature of the reactor to the point where the conversion rate becomes 80-98%, wherein the reactor may further be pressurized from normal pressure to 10 kg/cm¬2 with inert gas before the gas injecting process.
    • 目的:提供一种制备异丁酸的方法,以仅使用一批式反应器使异丁醛的转化率最大化,从而简化了整个过程,更经济,更方便地获得了高纯度的异丁酸。 此外,通过使用该方法,可以通过在惰性气体的压力下调节反应器中的反应气体的分压,在反应物和产物的爆炸范围之外的安全范围内进行反应。 构成:涉及通过含有氧分子的气体在液相中氧化异丁醛的制备异丁酸的方法包括:用异丁醛装入一批式反应器; 将反应器的初始温度设定为0-70℃; 注入含氧分子的气体; 将反应器中的反应压力保持在常压范围至10kg / cm 2; 将反应器的温度提高到转化率达到80-98%的程度,其中反应器可以在气体注入过程之前用惰性气体进一步从常压加压至10kg / cm 2。