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    • 1. 发明授权
    • Process for making aromatic aldehydes
    • 制备芳香族醛的方法
    • US06303827B1
    • 2001-10-16
    • US09393664
    • 1999-09-10
    • Ramzi Yanni SalehChristopher L. BeckerRobert C. MichaelsonRichard H. Schlosberg
    • Ramzi Yanni SalehChristopher L. BeckerRobert C. MichaelsonRichard H. Schlosberg
    • C07C4500
    • C07C47/542C07C7/14858C07C45/49C07C45/82C07C51/235C07C51/265C07C63/16C07C63/26C07C63/307C07C15/08
    • Alkyl aromatic compounds are converted to alkyl aromatic aldehydes by a carbonylation reaction. The carbonylation catalyst can be a high boiling point carbonylation catalyst which allows for the separation of the aldehyde product by selective volatilization. Alternatively, the carbonylation catalyst can be selected from perfluoroalkyl sulfonic acids having 2 to 18 carbon atoms, perfluoroether sulfonic acids having 2 to 18 carbon atoms, BF3(ROH)x wherein R represents CH3 or H and X is a number within the range of from 0.2 to 2, GaBr3, GaCl3, TaF5, NbF5, and NbBr5, with the proviso that when the catalyst is TaF5, NbF5, or NbBr5, then the reaction takes place in the absence of added HF. Preferably, all of the carbonylation reactions take place in the absence of added HF. The alkyl aromatic aldehydes can be oxidized to form an aromatic acid. A mixed xylene feed stock can be converted to a mixture of dimethylbenzaldehydes and then oxidized to form trimellitic acid without the need to separate the xylene or dimethylbenzaldehyde isomers.
    • 烷基芳族化合物通过羰基化反应转化成烷基芳族醛。 羰基化催化剂可以是高沸点羰基化催化剂,其允许通过选择性挥发来分离醛产物。 或者,羰基化催化剂可以选自具有2至18个碳原子的全氟烷基磺酸,具有2至18个碳原子的全氟醚磺酸,BF 3(ROH)x其中R表示CH 3或H,X是在 0.2至2,GaBr 3,GaCl 3,TaF 5,NbF 5和NbBr 5,条件是当催化剂为TaF 5,NbF 5或NbBr 5时,则在不加入HF的情况下进行反应。 优选地,所有的羰基化反应都在不加入HF的情况下进行。 烷基芳族醛可被氧化形成芳族酸。 混合二甲苯原料可以转化成二甲基苯甲醛的混合物,然后氧化形成偏苯三酸,而不需要分离二甲苯或二甲基苯甲醛异构体。
    • 9. 发明授权
    • Isoprene process
    • ISOPRENE过程
    • US5177290A
    • 1993-01-05
    • US639621
    • 1991-01-10
    • Ji-Yong RyuRobert C. Michaelson
    • Ji-Yong RyuRobert C. Michaelson
    • C07C1/20C07C2/86
    • C07C2/864C07C1/20C07C2/867C07C2521/16C07C2527/18
    • The present invention is directed to a process for producing dienes which involves reacting a reaction mixture of tertiary alkyl ether and a source of oxygen over two functionally distinct catalysts under reaction conditions sufficient to produce high yields of the dienes with minimal recycle of the ether. The two functionally different catalysts are selected from a group of bifunctional catalysts having both oxidation sites and acidic sites and monofunctional acidic catalysts, such as bifunctional catalysts containing components selected from a group of oxides of vanadium, tungsten, molybdenum, copper, iron, chromium, and uranium and mixtures thereof; and monofuctional acid catalysts such as acid treated montmorillonite clays, and acid catalysts comprising an inorganic amorphous or substantially amorphous oxide material comprising the following components reacted therein:M.sup.1 /M.sup.2 /P/Owherein M.sup.1 is at least one Group IIIB element selected from the group consisting of Al, Ga, In and Tl; M.sup.2 is at least one Group IVb element selected from the group of Si, Sn and Ge. The bifunctional catalysts are used in a first stage reaction, and the monofunctional acidic catalysts are used in a second stage reaction.
    • 本发明涉及一种制备二烯的方法,其包括在足以产生高产率的二烯并以最少量的乙醚循环的条件下,在两个功能上不同的催化剂上使叔烷基醚和氧源的反应混合物反应。 两种功能上不同的催化剂选自具有氧化位点和酸性位点的双官能催化剂和单官能酸性催化剂,例如含有选自钒,钨,钼,铜,铁,铬, 和铀及其混合物; 和酸性催化剂,例如酸处理的蒙脱石粘土,以及包含无机非晶或基本无定形氧化物材料的酸催化剂,其包含在其中反应的以下组分:M1 / M2 / P / O,其中M1是选自组中的至少一种IIIB族元素 由Al,Ga,In和Tl组成; M2是选自Si,Sn和Ge中的至少一种IVb族元素。 双功能催化剂用于第一阶段反应,单官能酸性催化剂用于第二阶段反应。
    • 10. 发明授权
    • Increasing the level of 2-methyl-2-butene in isoamylene
    • 提高了亚甲基2-甲基-2-丁烯的含量
    • US5073663A
    • 1991-12-17
    • US472844
    • 1990-01-31
    • Gustavo CerriRobert C. Michaelson
    • Gustavo CerriRobert C. Michaelson
    • B01J31/08B01J21/16C07B61/00C07C5/25C07C7/04C07C7/148C07C11/10
    • C07C7/14875Y10S203/20
    • A method for increasing the ratio of 2-methyl-2-butene (2MB2) to 2-methyl-1-butene (2MB1) in isoamylenes involves fractionating a feedstream containing tertiary amyl methyl ether (TAME) and isoamylenes including 2MB2 and 2MB1 in a ratio of about 2:1 to effect a separation between an overhead hydrocarbon fraction of isoamylenes including 2MB2 and 2MB1 in a ratio of about 1:1, a bottoms fraction including TAME, and a sidestream hydrocarbon fraction consisting essentially of isoamylenes including 2MB2 and 2MB1 in a ratio of about 6 to 12:1, recovering the sidestream hydrocarbon fraction, and recycling the overhead hydrocarbon fraction of isoamylenes to form a mixture which is subsequently reacted to form the feedstream. Prior to fractionation, the feedstream is formed by passing isoamylene, and optionally TAME, in a vapor phase over an ether cracking catalyst which isomerizes isoamylene and converts 2MB1 to 2MB2, i.e., the feedstream for fractionating, which contains 2MB2 and 2MB1 in a ratio of 2 to 5:1. A method for converting 2-methyl-1-butene to 2-methyl-2-butene which may be used to form the feedstream for fractionating involves providing a hydrocarbon stream comprising isoamylenes including 2MB1 and 2MB2 in a ratio of within the range of 1:1 to 5, adding about TAME to the isoamylenes to form a mixture which is passed in the liquid phase at a temperature and a LHSV which favors isomerization over an acidic ion exchange resin catalyst to produce a reaction product including 2MB1, 2MB2 in a ratio of 1:6 to 12, and TAME.
    • 在异戊烯中增加2-甲基-2-丁烯(2MB2)与2-甲基-1-丁烯(2MB1)的比例的方法包括在含有叔戊基甲基醚(TAME)和包含2MB2和2MB1的异戊烯的进料流中 比例为约2:1,以使比例约为1:1的异戊二烯的塔顶烃馏分与包含TAME的底部馏分和基本上由2MB2和2MB1组成的异戊烯组成的侧流烃馏分 约6至12:1的比例,回收侧流烃馏分,以及再循环异戊烯的塔顶烃馏分以形成随后反应形成进料流的混合物。 在分馏之前,通过使异戊烯和任选的TAME通过使异戊烯异构化的醚裂化催化剂将异戊烯和任选的TAME通过异丙烯和任选的TAME形成,并将2MB1转化为2MB2,即用于分馏的原料流,其含有2MB2和2MB1, 2到5:1。 可用于形成用于分馏的原料流的2-甲基-1-丁烯至2-甲基-2-丁烯的方法包括提供包含2MB1和2MB2的异戊烯的烃流,其比例范围为1: 1至5,向异戊烯加入约TAME以形成在温度下通过液相的混合物,并且在酸性离子交换树脂催化剂上有利于异构化的LHSV以产生包含2MB1,2MB2的反应产物,其比例为 1:6到12,和TAME。