Critical phase alkylation and transalkylation process in the presence of a beta zeolite
    2.
    发明授权
    Critical phase alkylation and transalkylation process in the presence of a beta zeolite 失效
    在β沸石存在下的临界相烷基化和烷基转移方法

    公开(公告)号:US07371911B2

    公开(公告)日:2008-05-13

    申请号:US11066951

    申请日:2005-02-25

    IPC分类号: C07C2/66

    摘要: A process for the production of ethylbenzene by the ethylation of benzene in the critical phase in a reaction zone containing a molecular sieve aromatic alkylation catalyst comprising cerium-promoted zeolite beta. A polyethylbenzene is supplied into the reaction zone and into contact with the cerium-promoted zeolite beta having a silica/alumina mole ratio within the range of 20-500. The reaction zone is operated at temperature and pressure conditions in which benzene is in the supercritical phase to cause ethylation of the benzene and the transalkylation of polyethylbenzene and benzene in the presence of the zeolite beta catalyst. An alkylation product is produced containing ethylbenzene as a primary product with the attendant production of heavier alkylated byproducts of no more than 60 wt. % of the ethylbenzene. The alkylation reaction zone is operated under conditions providing a composite byproduct yield of propyl benzene and butyl benzene relative to ethylbenzene, which is no more than one half of the corresponding yield byproduct for zeolite beta promoted with lanthanum. The production of ethylbenzene in the critical phase alkylation reaction zone is attended by recycle of a polyalkylated aromatic component of the reaction product back to the reaction zone.

    摘要翻译: 在包含铈促进沸石β的分子筛芳族烷基化催化剂的反应区中通过苯在临界阶段乙苯化生产乙苯的方法。 将聚乙苯供入反应区并与二氧化硅/氧化铝摩尔比在20-500范围内的铈促进沸石β接触。 反应区在苯处于超临界阶段的温度和压力条件下进行,以在沸石β催化剂存在下引起苯的乙基化和多乙基苯和苯的烷基转移。 生产含有乙苯作为主要产物的烷基化产物,伴随产生不超过60重量%的较重烷基化副产物。 %的乙苯。 烷基化反应区在相对于乙苯提供丙基苯和丁基苯的复合副产物产率的条件下操作,其不超过用镧促进的沸石β的相应产率副产物的一半。 通过将反应产物的多烷基化芳族组分再循环回到反应区,可以在临界相烷基化反应区中生产乙苯。

    Method for preparing asphalt and polymer compositions incorporating multi-component crosslinking agents
    3.
    发明授权
    Method for preparing asphalt and polymer compositions incorporating multi-component crosslinking agents 失效
    制备掺入多组分交联剂的沥青和聚合物组合物的方法

    公开(公告)号:US06407152B1

    公开(公告)日:2002-06-18

    申请号:US09723951

    申请日:2000-11-28

    IPC分类号: C08L9500

    摘要: A process for the preparation of an asphalt and polymer composition in which a minor amount of polymer component is subjected to a crosslinking. An asphalt base material is heated in a mixing chamber at a temperature sufficient to melt the asphalt and allow stirring of the asphalt within the chamber. A thermoplastic elastomer is added to the chamber in an amount not greater than 12 wt. %. While the asphalt elastomer formulation is stirred, a crosslinking agent is added in an amount effective to crosslink the thermoplastic elastomer. The crosslinking agent formulation comprises at least two components. One component is a thiopolymer incorporating organic sulfur prepared by the reaction of 6-tertiary butyl cresol and sulfur dichloride which reacts to produce a reaction product comprising 4,4-thiobis(6-tertiary butyl-m-cresol) and the thiopolymer, followed by subsequent separation of the 4,4-thiobis(6-tertiary-butyl-m-cresol) from the thiopolymer product. The second crosslinking component comprises a source of sulfur to crosslink the thermoplastic elastomer. The second crosslinking component may be selected from the group consisting of elemental sulfur, polythiomorpholine, specifically dithiodimorpholine, zinc-2-mercaptothiazole and mixtures thereof

    摘要翻译: 一种沥青和聚合物组合物的制备方法,其中少量的聚合物组分进行交联。 沥青基材料在混合室中以足以熔化沥青的温度加热并允许在室内搅拌沥青。 将热塑性弹性体以不大于12重量%的量添加到室中。 %。 在搅拌沥青弹性体配方的同时,加入有效交联热塑性弹性体的量的交联剂。 交联剂制剂包含至少两种组分。 一种组分是含有通过6-叔丁基甲酚和二氯化硫反应制备的有机硫的硫代聚合物,其反应生成包含4,4-二硫代(6-叔丁基间甲酚)和硫代聚合物的反应产物, 随后从硫代聚合物产物中分离出4,4-二硫代双(6-叔丁基间甲酚)。 第二交联组分包含硫源以交联热塑性弹性体。 第二交联组分可以选自元素硫,多硫代吗啉,特别是二硫代二吗啉,锌-2-巯基噻唑及其混合物

    Stable bitumen polymer compositions
    4.
    发明授权
    Stable bitumen polymer compositions 失效
    稳定的沥青聚合物组合物

    公开(公告)号:US06310122B1

    公开(公告)日:2001-10-30

    申请号:US09389960

    申请日:1999-09-03

    IPC分类号: C08L9500

    摘要: The present invention provides a method for preparing an asphalt and thermoplastic elastomer composition. The process comprises heating an asphalt cut in a stirred tank to a temperature sufficient to allow the stirring of the asphalt in the tank. A thermoplastic elastomer or rubber is added to the asphalt while continuing to stir the asphalt. The mixture is stirred at a speed and for a period of time sufficient to increase the distribution of the elastomer into the asphalt. The stirring speed is reduced and the temperature is increased to add an oil dispersion or aqueous emulsion of crosslinking agents to the tank. Stirring is continued for a period of time sufficient to improve the distribution of the crosslinking agent dispersion in the asphalt.

    摘要翻译: 本发明提供一种制备沥青和热塑性弹性体组合物的方法。 该方法包括将在搅拌槽中切割的沥青加热到足以允许在罐中搅拌沥青的温度。 在沥青中继续搅拌沥青时,加入热塑性弹性体或橡胶。 将混合物以足以增加弹性体分配到沥青中的速度搅拌一段时间。 搅拌速度降低,温度升高,向罐中加入交联剂的油分散体或水性乳液。 搅拌持续一段时间,足以改善沥青中交联剂分散体的分布。

    Modular wall system
    5.
    发明授权

    公开(公告)号:US10105890B2

    公开(公告)日:2018-10-23

    申请号:US14737439

    申请日:2015-06-11

    申请人: Kevin P. Kelly

    发明人: Kevin P. Kelly

    摘要: A modular exterior and interior panel, wall and divider system is provided. The modular wall system includes a support base, a plurality of horizontal two-sided panels, each having opposite vertical edges, and a plurality of vertical members secured to the support base. Each of the vertical members has at least one groove for receiving the opposite vertical edges of the horizontal panels. A decorative layer is applied on at least the exterior surfaces of the horizontal panels and the vertical members.

    Alkylation Process
    7.
    发明申请
    Alkylation Process 审中-公开
    烷基化方法

    公开(公告)号:US20080242906A1

    公开(公告)日:2008-10-02

    申请号:US12119171

    申请日:2008-05-12

    IPC分类号: C07C2/58

    摘要: A process for the production of ethylbenzene by the ethylation of benzene in the critical phase in a reaction zone containing a molecular sieve aromatic alkylation catalyst comprising cerium-promoted zeolite beta. A polyethylbenzene is supplied into the reaction zone and into contact with the cerium-promoted zeolite beta having a silica/alumina mole ratio within the range of 20-500. The reaction zone is operated at temperature and pressure conditions in which benzene is in the supercritical phase to cause ethylation of the benzene and the transalkylation of polyethylbenzene and benzene in the presence of the zeolite beta catalyst. An alkylation product is produced containing ethylbenzene as a primary product with the attendant production of heavier alkylated byproducts of no more than 60 wt. % of the ethylbenzene. The alkylation reaction zone is operated under conditions providing a composite byproduct yield of propyl benzene and butyl benzene relative to ethylbenzene, which is no more than one half of the corresponding yield byproduct for zeolite beta promoted with lanthanum. The production of ethylbenzene in the critical phase alkylation reaction zone is attended by recycle of a polyalkylated aromatic component of the reaction product back to the reaction zone.

    摘要翻译: 在包含铈促进沸石β的分子筛芳族烷基化催化剂的反应区中通过苯在临界阶段乙苯化生产乙苯的方法。 将聚乙苯供入反应区并与二氧化硅/氧化铝摩尔比在20-500范围内的铈促进沸石β接触。 反应区在苯处于超临界阶段的温度和压力条件下进行,以在沸石β催化剂存在下引起苯的乙基化和多乙基苯和苯的烷基转移。 生产含有乙苯作为主要产物的烷基化产物,伴随产生不超过60重量%的较重烷基化副产物。 %的乙苯。 烷基化反应区在相对于乙苯提供丙基苯和丁基苯的复合副产物产率的条件下操作,其不超过用镧促进的沸石β的相应产率副产物的一半。 通过将反应产物的多烷基化芳族组分再循环回到反应区,可以在临界相烷基化反应区中生产乙苯。

    Solvent extraction method and apparatus for recovering analytes
    9.
    发明授权
    Solvent extraction method and apparatus for recovering analytes 失效
    用于回收分析物的溶剂萃取方法和装置

    公开(公告)号:US5384023A

    公开(公告)日:1995-01-24

    申请号:US72021

    申请日:1993-06-07

    IPC分类号: B01D11/04 B01D17/06 B03C5/00

    CPC分类号: B01D11/0419

    摘要: An improved liquid/liquid solvent extraction method and apparatus utilizes an external electrode for creating an electric field within an extraction cell to shatter aqueous sample droplets flowing within a non-conductive solvent. The external electrode is in intimate contact with the exterior surface of the insulative cell wall so as to preclude direct electrical contact between the electrode and the internal liquids. A sample interface detector permits the interface between the two liquids to be detected when the liquids sequentially flow out from the cell, thereby facilitating separate collection of the liquid. Interface detection is achieved by coupling electrical pulses into the flowing liquid to cause ionization charge/discharge cycles in the conductive aqueous sample but not in the non-conductive solvent. Downstream detection of the charge/discharge cycle in the liquid identifies the interface.

    摘要翻译: 改进的液/液溶剂萃取方法和装置利用外部电极在提取池内产生电场以粉碎在非导电溶剂中流动的水样品液滴。 外部电极与绝缘电池壁的外表面紧密接触,以防止电极和内部液体之间的直接电接触。 样品接口检测器允许当液体从电池依次流出时检测两种液体之间的界面,从而便于液体的分离收集。 通过将电脉冲耦合到流动的液体中以在导电水性样品中引起电离充电/放电循环但不在非导电溶剂中来实现界面检测。 液体中的充电/放电循环的下游检测识别界面。