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21 条记录 (耗时 0.021 秒)

    Methanol carbonylation process
    1.
    发明授权
    Methanol carbonylation process 失效
    甲醇羰基化工艺

    公开(公告)号：US5144068A

    公开(公告)日：1992-09-01

    申请号：US615846

    申请日：1991-01-07

    申请人： Brad L. Smith ,  G. Paull Torrence ,  Adolfo Aguilo ,  James S. Alder

    发明人： Brad L. Smith ,  G. Paull Torrence ,  Adolfo Aguilo ,  James S. Alder

    IPC分类号： C07C51/12

    CPC分类号： C07C51/12

    摘要： An alcohol such as methanol is reacted with carbon monoxide in a liquid reaction medium containing a rhodium catalyst stabilized with an iodide salt, especially lithium iodide, along with alkyl iodide such as methyl iodide and alkyl acetate such as methyl acetate in specified proportions. With a finite concentration of water in the reaction medium the product is the carboxylic acid instead of, for example, the anhydride. The present reaction system not only provides an acid product of unusually low water content at unexpectedly favorable reaction rates but also, whether the water content is low or, as in the case of prior-art acetic acid technology, relatively high, is characterized by unexpectedly high catalyst stability; i.e., it is resistant to catalyst precipitation out of the reaction medium.

    摘要翻译： 在含有用碘化物盐，特别是碘化锂稳定的铑催化剂的液体反应介质中，与甲醇一起使用醇与一氧化碳一起与特定比例的烷基碘如甲基碘和乙酸烷基酯如乙酸甲酯反应。 在反应介质中有限浓度的水，产物是羧酸，而不是例如酸酐。 本反应体系不仅提供了出乎意料的良好反应速率的异常低水含量的酸产物，而且无论水含量低，或者如现有技术乙酸技术的情况相对较高，其特征在于意外地 高催化剂稳定性; 即耐反应介质中的催化剂沉淀。

    Methanol carbonylation process
    2.
    发明授权
    Methanol carbonylation process 失效

    公开(公告)号：US5026908A

    公开(公告)日：1991-06-25

    申请号：US528496

    申请日：1990-05-25

    申请人： Brad L. Smith ,  G. Paull Torrence ,  Adolfo Aguilo' ,  James S. Alder

    发明人： Brad L. Smith ,  G. Paull Torrence ,  Adolfo Aguilo' ,  James S. Alder

    IPC分类号： C07C51/12

    CPC分类号： C07C51/12

    摘要： An alcohol such as methanol is reacted with carbon monoxide in a liquid reaction medium containing a rhodium catalyst stabilized with an iodide salt, especially lithium iodide, along with alkyl iodide such as methyl iodide and alkyl acetate such as methyl acetate in specified proportions. With a finite concentration of water in the reaction medium the product is the carboxylic acid instead of, for example, the anhydride. The present reaction system not only provides an acid product of unusually low water content at unexpectedly favorable reaction rates but also, whether the water content is low or, as in the case of prior-art acetic acid technology, relatively high, is characterized by unexpectedly high catalyst stability; i.e., it is resistant to catalyst precipitation out of the reaction medium.

    Methanol carbonylation process
    3.
    发明授权
    Methanol carbonylation process 失效
    甲醇羰基化工艺

    公开(公告)号：US5001259A

    公开(公告)日：1991-03-19

    申请号：US870267

    申请日：1986-06-03

    申请人： Brad L. Smith ,  G. Paull Torrence ,  Adolfo Aguilo' ,  James S. Alder

    发明人： Brad L. Smith ,  G. Paull Torrence ,  Adolfo Aguilo' ,  James S. Alder

    IPC分类号： C07C51/12

    CPC分类号： C07C51/12

    摘要： An alcohol such as methanol is reacted with carbon monoxide in a liquid reaction medium containing a rhodium catalyst stabilized with an iodide salt, especially lithium iodide, along with alkyl iodide such as methyl iodide and alkyl acetate such as methyl acetate in specified proportions. With a finite concentration of water in the reaction medium the product is the carboxylic acid instead of, for example, the anhydride. The present reaction system not only provides an acid product of unusually low water content at unexpectedly favorable reaction rates but also, whether the water content is low or, as in the case of prior-art acetic acid technology, relatively high, is characterized by unexpectedly high catalyst stability; i.e., it is resistant to catalyst precipitation out of the reaction medium.

    摘要翻译： 在含有用碘化物盐，特别是碘化锂稳定的铑催化剂的液体反应介质中，与甲醇一起使用醇与一氧化碳一起与特定比例的烷基碘如甲基碘和乙酸烷基酯如乙酸甲酯反应。 在反应介质中有限浓度的水，产物是羧酸，而不是例如酸酐。 本反应体系不仅提供出乎意料的良好反应速率的异常低水含量的酸产物，而且无论水含量低，或者如现有技术乙酸技术的情况相对较高，其特征在于意想不到 高催化剂稳定性; 即耐反应介质中的催化剂沉淀。

    Rhodium and iodine recovery method
    7.
    发明授权
    Rhodium and iodine recovery method 失效
    铑和碘回收法

    公开(公告)号：US4628041A

    公开(公告)日：1986-12-09

    申请号：US827699

    申请日：1986-02-10

    申请人： Brad L. Smith ,  George P. Torrence ,  Adolfo Aguilo

    发明人： Brad L. Smith ,  George P. Torrence ,  Adolfo Aguilo

    IPC分类号： B01J27/32 ,  C07C51/12 ,  B01J38/68 ,  B01J27/08 ,  C07C53/08

    CPC分类号： B01J27/32 ,  C07C51/12 ,  Y02P20/584

    摘要： A process for the recovery of rhodium and iodine values and the separation of rhodium from corrosion metal salts in the manufacture of acetic acid by the carbonylation of methanol wherein the reaction mixture contains from about none to about 20 wt % of water, from about 2 to about 20 wt % of alkali metal or alkaline earth metal iodide, methanol, acetic acid, methyl iodide, and carbon monoxide which comprises: (1) removing at least a portion of the reaction solution from the reactor, (2) removing at least a portion of the product acetic acid from the portion in (1) by distillation, (3) adding an excess of methyl acetate to the product depleted material in (2) and heating the resultant mixture to a sufficiently high temperature to convert the methyl acetate to methyl iodide (4) removing the resulting methyl iodide by distillation, (5) continuing to heat the resulting mixture at a temperature and time sufficient to precipitate the rhodium as rhodium iodide, and (6) separating the rhodium iodide and returning it to the reaction mixture.

    摘要翻译： 回收铑和碘值的方法以及通过羰基化甲醇在乙酸制造中从腐蚀金属盐中分离铑的方法，其中反应混合物含有约不超过约20重量％的水，约2至 约20重量％的碱金属或碱土金属碘化物，甲醇，乙酸，甲基碘和一氧化碳，其包括：（1）从反应器中除去至少一部分反应溶液，（2）除去至少一种 通过蒸馏从（1）中的部分产物乙酸的部分，（3）向（2）中的产物贫化物质中加入过量的乙酸甲酯，并将所得混合物加热至足够高的温度以将乙酸甲酯转化为 甲基碘（4）通过蒸馏除去得到的甲基碘，（5）在足以使铑作为碘化铑沉淀的温度和时间继续加热所得混合物，和（6）分离铑 碘化物并将其返回到反应混合物中。

    Recycling polyester and recovering glycols
    8.
    发明授权
    Recycling polyester and recovering glycols 失效
    回收聚酯和回收二醇

    公开(公告)号：US5744503A

    公开(公告)日：1998-04-28

    申请号：US595690

    申请日：1996-02-01

    申请人： Brad L. Smith ,  Gary E. Wilkins

    发明人： Brad L. Smith ,  Gary E. Wilkins

    IPC分类号： C08J11/02 ,  C07C29/86 ,  C08G63/88 ,  C08L67/00 ,  C08L67/02 ,  C08J11/18 ,  C08J11/04

    CPC分类号： C07C29/86

    摘要： A process for recovering glycols produced during recycling of polyester comprising the step of extracting aromatic contaminants from the glycols. Extracting the aromatic contaminants is accomplished by: providing a glycol rich stream from a process to recycle polyester. The glycol rich stream comprised glycols, water, and aromatic contaminants. A solvent is added to the glycol rich stream to form a mixture. The mixture is resolved to form a glycol rich component and an aromatic contaminant rich component. The glycols are recovered from the glycol rich component.

    摘要翻译： 一种用于回收在聚酯回收期间产生的二醇的方法，包括从二醇中提取芳族污染物的步骤。 芳族污染物的提取通过以下方式实现：从循环聚酯的方法提供富含二醇的物流。 富含乙二醇的流包含二醇，水和芳族污染物。 将溶剂加入到富含二醇的料流中以形成混合物。 该混合物被分解以形成富含二醇的组分和富含芳族杂质的组分。 从富含二醇的组分中回收二醇。

    Process for the preparation of bisarylalkyl ethers
    10.
    发明授权
    Process for the preparation of bisarylalkyl ethers 失效
    二芳基烷基醚的制备方法

    公开(公告)号：US5210278A

    公开(公告)日：1993-05-11

    申请号：US934995

    申请日：1992-08-25

    申请人： Mohammad Aslam ,  Brad L. Smith ,  George Kvakovszky

    发明人： Mohammad Aslam ,  Brad L. Smith ,  George Kvakovszky

    IPC分类号： C07C67/297

    CPC分类号： C07C67/297

    摘要： A process for preparing a substituted styrene by reacting a bisarylalkyl ether in the presence of an acid catalyst is disclosed. The process is preferably used for the preparation of 4-acetoxystyrene from 4,4'-(oxydiethylidene)bisphenol diacetate and 4-methoxystyrene from 4,4'-(oxydiethylidene)bisphenol dimethyl ether. A process for preparing a bisarylalkyl ether by reacting a corresponding arylalkanol in the presence of an acid catalyst is also disclosed.

    摘要翻译： 公开了一种在酸催化剂存在下使双芳基烷基醚反应制备取代苯乙烯的方法。 该方法优选用于从4,4' - （氧基二亚乙基）双酚二乙酸酯和来自4,4'-（氧基二亚乙基）双酚二甲醚的4-甲氧基苯乙烯制备4-乙酰氧基苯乙烯。 还公开了通过在酸催化剂的存在下使相应的芳基烷醇反应来制备双芳基烷基醚的方法。