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    METHOD OF PRODUCING DIMETHYL PHTHALATE FROM NAPHTHALENE BASED CHEMICALS
    36.
    发明申请
    METHOD OF PRODUCING DIMETHYL PHTHALATE FROM NAPHTHALENE BASED CHEMICALS 审中-公开
    从萘基化学制备二甲基苯乙烯的方法

    公开(公告)号：WO2004078699B1

    公开(公告)日：2004-11-04

    申请号：PCT/IB2004000613

    申请日：2004-03-05

    Applicant: COUNCIL SCIENT IND RES ,  BIT KUMARES CHANDRA

    Inventor： BIT KUMARES CHANDRA

    IPC: C07C67/08 ,  C07C69/80

    CPC classification number: C07C67/08 ,  C07C69/80

    Abstract: The present invention results to an improved and environment friendly method of producing dimethyl phthalate of about 99% purity from naphthalene based chemicals, said method comprising steps of mixing phthalic anhydride with methanol in the ratio ranging between 2:3 to 3:2, adding catalyst(s) to the mixture wherein, the ratio of phthalic anhydride and the catalyst is ranging between 3:1 to 15:1, adding a promoter to the resultant of step (b) wherein, the promoter is in the range of 1.5 to 2.0% by weight of phthalic anhydride, refluxing the resulted mixture at a temperature ranging between 60 to 100°C, for time duration ranging between 6 to 12 hrs. in the presence of benzene, wherein the ratio of benzene phthalic anhydride is in the range of 1:5 to 2:1 to obtain distillate, neutralizing the residue with about 10% caustic soda, extracting the neutralized residue with the benzene, distilling at the temperature ranging between 140 to 150°C under 10mm of mercury to obtain dimethyl phthalate.

    異種複合エステルの製造方法
    37.
    发明申请
    異種複合エステルの製造方法 审中-公开
    生产复合混合酯的方法

    公开(公告)号：WO2003055842A1

    公开(公告)日：2003-07-10

    申请号：PCT/JP2002/006083

    申请日：2002-06-18

    Applicant: 科学技術振興事業団

    Inventor： 松本 哲

    IPC: C07C69/80

    CPC classification number: C07C67/03 ,  C07C67/08

    Abstract: A process for producing a composite mixed ester suitable for use as a plasticizer having improved nonvolatility as compared with dibasic acid diesters which have excellent general-purpose plasticizer properties and have been used in a large amount but have come to be regarded as endocrine disruptors. The mixed ester is equal to the dibasic acid diesters in production cost and performance even when it contains none of these diesters. Also provided is a composition. Dibasic-acid diesters volatilize according to their vapor pressures, while polymers have nonvolatility and reduced toxicity according to their molecular weights. However, polymers have poor plasticizer performance. Although composite esters having an intermediate molecular weight may meet the requirement, they are difficult to produce and have poor profitability. The process comprises subjecting acids, a diol, and a terminal alcohol to dehydrating esterification and subsequently subjecting the excess alcohol to transesterification. Thus, a composite mixed ester is advantageously produced, which is a composition represented by RPX1-2AXn-1AR and which contains residues of the two dibasic acids bonded in such a manner that one or two residues of one of the acids and one or two residues of the other occur alternately.

    Abstract translation: 与具有优异的通用增塑剂性能并被大量使用但已被认为是内分泌干扰物的二元酸二酯相比，适合用作具有改善的非挥发性的增塑剂的复合混合酯的制备方法。 混合酯等于二元酸二酯的生产成本和性能，即使不含有这些二酯。 还提供了一种组合物。 二元酸二酯根据其蒸气压挥发，而聚合物根据其分子量具有非挥发性和降低的毒性。 然而，聚合物具有差的增塑剂性能。 虽然具有中等分子量的复合酯可以满足要求，但是它们难以生产并且具有差的获利能力。 该方法包括使酸，二醇和末端醇进行脱水酯化，随后使过量的醇进行酯交换。 因此，有利地制备复合混合酯，其是由RPX1-2AXn-1AR表示的组合物，其含有两种二元酸的残基，其以一种或两种酸残基和一个或两个残基的键合 的交替出现。

    OPTIMIZED CATALYST ADDITION TO ENHANCE ESTERIFICATION CATALYST PERFORMANCE
    38.
    发明申请
    OPTIMIZED CATALYST ADDITION TO ENHANCE ESTERIFICATION CATALYST PERFORMANCE 审中-公开
    优化添加催化剂以提高酯化催化剂的性能

    公开(公告)号：WO02006204A2

    公开(公告)日：2002-01-24

    申请号：PCT/US2001/040926

    申请日：2001-06-12

    IPC: C07C67/08 ,  C07C69/80

    CPC classification number: C07C67/08 ,  C07C69/80

    Abstract: The present invention provides a process for the production of an ester, including reacting an alcohol with a carbonyl-like compound in the presence of a first esterification catalyst; and adding a second esterification catalyst to the reaction mixture at some time after initiation of the esterification reaction. The staged addition of the esterification catalyst according to the present invention provides a reduced reaction time to achieve a targeted conversion to esters.

    Abstract translation: 本发明涉及制备酯的方法，其包括首先使醇与羰基化合物在第一酯化催化剂存在下反应; 然后在酯化反应开始后的短时间内向反应混合物中加入第二酯化催化剂。 根据本发明的方法逐渐添加酯化催化剂使得可以减少反应时间并因此实现靶向转化成酯。

    COMPOSITION CONTAINING PHTHALIC ACID MONOESTER
    40.
    发明申请
    COMPOSITION CONTAINING PHTHALIC ACID MONOESTER 审中-公开
    含有酸性单体的组合物

    公开(公告)号：WO01007395A1

    公开(公告)日：2001-02-01

    申请号：PCT/JP2000/004997

    申请日：2000-07-26

    IPC: C07C67/62 ,  C07C69/80 ,  C07C67/08

    CPC classification number: C07C67/62 ,  C07C69/80

    Abstract: A composition which comprises 100 parts by weight of a phthalic acid monoester and 2 to 50 parts by weight of an alcohol. The composition is excellent in flowability and storage stability and is suitable for use as a feed material for the production of phthalic diesters because of its transportability and storage stability.

    Abstract translation: 一种组合物，其包含100重量份的邻苯二甲酸单酯和2至50重量份的醇。 该组合物的流动性和储存稳定性优异，并且适合用作生产邻苯二甲酸二酯的进料，因为其输送性和储存稳定性。

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