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    Method of producing aromatic carboxylic acids by oxidizing alkyl aromatic hydrocarbons or partially oxidized intermediates thereof
    1.
    发明授权
    Method of producing aromatic carboxylic acids by oxidizing alkyl aromatic hydrocarbons or partially oxidized intermediates thereof 失效
    通过氧化烷基芳族烃或其部分氧化的中间体制备芳族羧酸的方法

    公开(公告)号：US06194607B1

    公开(公告)日：2001-02-27

    申请号：US09453537

    申请日：1999-12-03

    申请人： Sung-Hwa Jhung ,  Youn-Seok Park ,  Ki-Hwa Lee ,  Jin Sun Yoo ,  Jong-Hyun Chae

    发明人： Sung-Hwa Jhung ,  Youn-Seok Park ,  Ki-Hwa Lee ,  Jin Sun Yoo ,  Jong-Hyun Chae

    IPC分类号： G07C5116

    CPC分类号： C07C51/265 ,  Y02P20/52 ,  C07C63/26 ,  C07C63/16

    摘要： An improved production method of aromatic carboxylic acid products of significantly improved yield and quality by oxidizing alkyl aromatic substrates or their partially oxidized intermediates in a conventional MC-type catalyst system modified to contain additional components such as alkali metal or alkaline earth metal in an acetic acid medium in a feed gas containing oxygen and optionally carbon dioxide. Since carbon dioxide functioned as a co-oxidant along with oxygen in the oxidation reaction, the oxidation reaction proceeds more selectively to produce the carboxylic acid product much faster under milder reaction conditions over the conventional MC-type oxidation. In particular, the oxidation of para-xylene carried out by the novel present method enabled production of terephthalic acid of higher yield and enhanced quality, which were improved far more than the extent that generally could be expected by current PTA producers. The present invention also provides an effective purification process to produce highly pure terephthalic acid or isophthalic acid by the oxidation of impurities such as 4-carboxybenzaldehyde and para-toluic acid or 3-carboxybenzaldehyde and meta-toluic acid contaminated in crude terephthalic acid and isophthalic acid product, respectively.

    摘要翻译： 通过在常规的MC型催化剂体系中氧化烷基芳香族基质或其部分氧化的中间体，在醋酸中含有另外的成分如碱金属或碱土金属，改进了产率和质量的改善的芳族羧酸产物的生产方法 在含有氧气和任选的二氧化碳的进料气体中的介质。 由于二氧化碳在氧化反应中作为辅助氧化剂与氧气一起起作用，因此与常规的MC型氧化相比，在较温和的反应条件下，氧化反应更有选择性地进行得更快地产生羧酸产物。 特别地，通过新颖的本发明方法进行的对二甲苯的氧化使得能够生产更高产率和更高质量的对苯二甲酸，其得到的改善远远超过现有PTA生产者普遍预期的程度。 本发明还提供了一种有效的纯化方法，通过氧化杂质如4-羧基苯甲醛和对甲苯甲酸或3-羧基苯甲醛和在对苯二甲酸和间苯二甲酸中污染的间甲苯甲酸，产生高纯对苯二甲酸或间苯二甲酸 产品。

    Method of producing aromatic carboxylic acids by oxidizing alkyl aromatic compounds or partially oxidized intermediates thereof with carbon dioxide containing gas
    2.
    发明授权
    Method of producing aromatic carboxylic acids by oxidizing alkyl aromatic compounds or partially oxidized intermediates thereof with carbon dioxide containing gas 失效
    通过用含二氧化碳气体氧化烷基芳族化合物或其部分氧化的中间体来生产芳族羧酸的方法

    公开(公告)号：US06180822B2

    公开(公告)日：2001-01-30

    申请号：US09453536

    申请日：1999-12-03

    申请人： Sung-Hwa Jhung ,  Ki-Hwa Lee ,  Youn-Seok Park ,  Jin Sun Yoo

    发明人： Sung-Hwa Jhung ,  Ki-Hwa Lee ,  Youn-Seok Park ,  Jin Sun Yoo

    IPC分类号： C07C5116

    CPC分类号： C07C51/265 ,  Y02P20/52 ,  C07C63/307 ,  C07C63/06 ,  C07C63/15 ,  C07C63/313 ,  C07C63/333 ,  C07C63/16 ,  C07C63/38 ,  C07C63/26

    摘要： An improved production method of aromatic carboxylic acid products of significantly improved yield and quality, the method including oxidizing alkyl aromatic substrates or their partially oxidized intermediates in a catalyst system containing a conventional catalyst and, if deemed necessary, additional components such as a transition metal or lanthanide series metal, in an acetic acid medium, with a feed gas containing both oxygen and carbon dioxide. Since carbon dioxide functions as a co-oxidant along with oxygen in the oxidation reaction, the oxidation reaction proceeds more selectively to produce the carboxylic acid product much faster under milder reaction conditions as compared to the conventional oxidation. The present invention also can be utilized as an effective purification process to produce highly pure terephthalic acid or isophthalic acid by oxidation of impurities such as 4-carboxybenzaldehyde and para-toluic acid or 3-carboxybenzaldehyde and meta-toluic acid which are contaminated in crude terephthalic acid and isophthalic acid products, respectively.

    摘要翻译： 一种改进的产率和质量显着提高的芳族羧酸产物的生产方法，包括在含有常规催化剂的催化剂体系中氧化烷基芳族底物或其部分氧化的中间体的方法，如果需要，还可加入另外的组分如过渡金属或 镧系元素金属，在乙酸介质中，含有含氧和二氧化碳的进料气体。 由于二氧化碳在氧化反应中作为氧气与氧气一起起作用，所以与常规氧化相比，氧化反应更有选择地进行，以在更温和的反应条件下更快地生成羧酸产物。 本发明还可以用作有效的纯化方法，通过氧化杂质如4-羧基苯甲醛和对甲苯甲酸或3-羧基苯甲醛和间甲苯甲酸来生产高纯对苯二甲酸或间苯二甲酸，这些杂质被粗对苯二甲酸 酸和间苯二酸产品。

    Method of producing aromatic carboxylic acids by oxidizing alkyl aromatic compounds or partially oxidized intermediates thereof with oxygen-enriched gas
    3.
    发明授权
    Method of producing aromatic carboxylic acids by oxidizing alkyl aromatic compounds or partially oxidized intermediates thereof with oxygen-enriched gas 失效
    通过用富氧气体氧化烷基芳族化合物或其部分氧化的中间体来生产芳族羧酸的方法

    公开(公告)号：US06175038B1

    公开(公告)日：2001-01-16

    申请号：US09453535

    申请日：1999-12-03

    申请人： Sung-Hwa Jhung ,  Youn-Seok Park

    发明人： Sung-Hwa Jhung ,  Youn-Seok Park

    IPC分类号： C07L5116

    CPC分类号： C07C51/265 ,  C07C63/26 ,  C07C63/24

    摘要： An improved production method of aromatic carboxylic acids of significantly improved yields and quality by oxidizing alkyl aromatic substrates or their partially oxidized intermediates by oxygen-enriched gas in a conventional Co—Mn—Br catalyst system containing additional components such as a transition metal or lanthanide metal component in an aliphatic carboxylic acid having 1˜6 carbon atoms. In other words, a decline in reactivity in the later part of the oxidation reaction and the precipitation of a catalyst such as manganese were effectively deterred by means of incorporating one or more than one type of transition or lanthanide metal components selected from such metals as Ce, Zr, Hf, Fe, Cr, and Mo during the oxidation reaction with oxygen-enriched gas. With this invention, pure aromatic carboxylic acids with white color can be obtained with high selectivity and reactivity by oxidation of substrates with oxygen-enriched gas. The oxidation reaction of alkylaromatic substrates proceeds more selectively with a much faster rate to produce aromatic carboxylic acids of improved quality as compared to those of conventional oxidation processes.

    摘要翻译： 通过在含有附加组分如过渡金属或镧系金属的常规Co-Mn-Br催化剂体系中通过富氧气体氧化烷基芳族基底或其部分氧化的中间体，改进的芳族羧酸的生产方法显着提高了产率和质量 具有1〜6个碳原子的脂族羧酸的组分。 换句话说，氧化反应的后期部分的反应性的降低和催化剂如锰的沉淀通过引入一种或多于一种类型的选自如Ce金属的过渡或镧系元素金属成分而被有效地阻止 ，Zr，Hf，Fe，Cr和Mo在与富氧气体的氧化反应中。 通过本发明，可以通过用富氧气体氧化底物，以高选择性和反应性获得具有白色的纯芳族羧酸。 与常规氧化方法相比，烷基芳族底物的氧化反应以更快的速率更有选择地进行，以产生质量提高的芳族羧酸。

    Method for polymerization of an .alpha.-olefin
    5.
    发明授权
    Method for polymerization of an .alpha.-olefin 失效
    聚合α-烯烃的方法

    公开(公告)号：US6066702A

    公开(公告)日：2000-05-23

    申请号：US74079

    申请日：1998-05-07

    申请人： Ki-Su Ro ,  Il-Seop Kim ,  Chun-Byung Yang ,  Youn-Seok Park

    发明人： Ki-Su Ro ,  Il-Seop Kim ,  Chun-Byung Yang ,  Youn-Seok Park

    IPC分类号： C08F4/654 ,  C08F4/14 ,  C08F4/44 ,  C08F4/65 ,  C08F110/06

    CPC分类号： C08F110/06

    摘要： A method for polymerization or copolymerization of .alpha.-olefin, characterized in that the polymerization is performed using a solid complex titanium catalyst comprising magnesium, a halogen-containing titanium compound, and internal electron donors; organometallic compounds of metals belonging to Groups I and III on the periodic table of elements; and, as external electron donors, a mixture of three or more kinds of organic silicon compounds, from which homopolyolefins having MFR less than 5, MFR in the range from 5 to 20, and MFR greater than 20 are polymerized under the same polymerization conditions. By use of the present invention it is possible to produce an olefin polymer with high stereoregularity, broad molecular weight distribution, and good fluidity, at high rates of yield.

    摘要翻译： 一种聚合或共聚α-烯烃的方法，其特征在于使用包含镁，含卤素的钛化合物和内部电子给体的固体复合钛催化剂进行聚合; 属于元素周期表第I和III族金属的有机金属化合物; 并且作为外部电子供体，可以在相同的聚合条件下聚合三种或更多种有机硅化合物的混合物，其中具有MFR小于5的均聚烯烃，MFR为5至20，MFR大于20。 通过使用本发明，可以以高收率产生具有高立构规整性，宽分子量分布和良好流动性的烯烃聚合物。