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25 条记录 (耗时 0.022 秒)

    Low PAH pitch and process for same
    1.
    发明授权
    Low PAH pitch and process for same 失效
    低PAH间距和过程相同

    公开(公告)号：US5534134A

    公开(公告)日：1996-07-09

    申请号：US156240

    申请日：1993-11-23

    申请人： William Roder ,  Eric F. V. Scriven

    发明人： William Roder ,  Eric F. V. Scriven

    IPC分类号： C10C3/00

    CPC分类号： C10C3/005

    摘要： Described are preferred pitches which comprise a blend of coal tar pitch, petroleum pitch and gilsonite pitch, and preferred processes and compositions which can be used to form such pitches. The pitches have substantially reduced contents of polyaromatic hydrocarbons (PAH's) relative to standard coal tar pitches, and are thus more favorable from health, safety and environmental standpoints.

    摘要翻译： 描述了包括煤焦油沥青，石油沥青和古土黑沥青混合物的优选沥青，以及可用于形成这种沥青的优选方法和组合物。 相对于标准煤焦油沥青，间距大大减少了多芳烃（PAH's）的含量，因此从健康，安全和环境的角度来看更为有利。

    Processes for producing citrate esters
    2.
    发明授权
    Processes for producing citrate esters 有权
    生产柠檬酸酯的方法

    公开(公告)号：US06403825B1

    公开(公告)日：2002-06-11

    申请号：US09437334

    申请日：1999-11-30

    申请人： Edward P. Frappier ,  James E. Davis ,  Martin Grendze ,  Eric F. V. Scriven ,  John T. Wyeth ,  Kuen-Wai Chiu

    发明人： Edward P. Frappier ,  James E. Davis ,  Martin Grendze ,  Eric F. V. Scriven ,  John T. Wyeth ,  Kuen-Wai Chiu

    IPC分类号： C07C6966

    CPC分类号： C07C67/08 ,  C07C69/704

    摘要： Described are processes for producing citrate esters in, an economic fashion. Esters are prepared by esterification of a citric acid-containing fermentation broth having been treated to remove cations and optionally other impurities, but containing sugar(s). Esters are also prepared by reacting an impure aqueous citric acid source with an alcohol to provide a heterogeneous aqueous/organic reacted mixture, wherein the organic phase contains the ester and the aqueous phase retains water-soluble impurities. A liquid phase separation is then used to separate the organic and aqueous phases, conveniently separating the impurities from the product and avoiding the energy-intensive distillation of water from the reaction medium.

    摘要翻译： 描述了以经济方式生产柠檬酸酯的方法。 酯通过已经处理以除去阳离子和任选的其它杂质但含有糖的含柠檬酸的发酵液的酯化制备。 酯也可以通过使不纯的柠檬酸水溶液与醇反应来制备，以提供非均相的含水/有机反应的混合物，其中有机相含有酯，水相保留水溶性杂质。 然后使用液相分离来分离有机相和水相，方便地从产物中分离杂质，并避免水从反应介质中进行能量密集的蒸馏。

    Preparation of heterocycles using 1,3-dihalopropenes
    3.
    发明授权
    Preparation of heterocycles using 1,3-dihalopropenes 有权
    使用1,3-二卤代丙烯制备杂环

    公开(公告)号：US06365738B1

    公开(公告)日：2002-04-02

    申请号：US09342294

    申请日：1999-06-29

    申请人： Ramiah Murugan ,  Eric F. V. Scriven

    发明人： Ramiah Murugan ,  Eric F. V. Scriven

    IPC分类号： C07D23936

    CPC分类号： C07D213/80 ,  C07D213/61 ,  C07D215/04 ,  C07D239/36 ,  C07D239/38

    摘要： Described are preferred processes for preparing heterocycles having one or more nitrogen and/or oxygen heteroatoms, utilizing a 1,3-dihalopropene as an effective 3-carbon fragment. Preferred processes yield pyridines, quinolines, oxazoles, pyrimidines and pyrazoles, depending upon the other reactant or reactants utilized with the 1,3-dihalopropene.

    摘要翻译： 描述的是制备具有一个或多个氮和/或氧杂原子的杂环的优选方法，利用1,3-二卤代丙烯作为有效的3-碳片段。 取决于与1,3-二卤丙烯一起使用的其它反应物或反应物，优选的方法产生吡啶，喹啉，恶唑，嘧啶和吡唑。

    Linear polyvinylpyridine polymers and processes
    4.
    发明授权
    Linear polyvinylpyridine polymers and processes 失效
    线性聚乙烯吡啶聚合物和方法

    公开(公告)号：US5371160A

    公开(公告)日：1994-12-06

    申请号：US43362

    申请日：1993-04-06

    申请人： Ernest Crowe ,  James G. Keay ,  Eric F. V. Scriven

    发明人： Ernest Crowe ,  James G. Keay ,  Eric F. V. Scriven

    IPC分类号： C08F8/00 ,  C08F26/08 ,  C08F26/06 ,  C08L39/04

    CPC分类号： C08F26/08 ,  C08F8/06 ,  C08F8/44

    摘要： Described are unique polymerization processes for preparing linear polyvinylpyridine polymers as well as unique linear polyvinylpyridine polymer compositions. The processes involve the use of an alkylpyridine anion as an anionic polymerization catalyst and result in linear polyvinylpyridines having alkylpyridine end groups homologous to the pendant pyridines of the polymer. Processes of the invention are particularly advantageous in preparing relatively low molecular weight linear polyvinylpyridines without the need to use large amounts of catalyst to achieve the same.

    摘要翻译： 描述了用于制备直链聚乙烯吡啶聚合物和独特的直链聚乙烯吡啶聚合物组合物的独特的聚合方法。 该方法涉及使用烷基吡啶阴离子作为阴离子聚合催化剂，并产生具有与聚合物的侧链吡啶同源的烷基吡啶端基的直链聚乙烯吡啶。 本发明的方法在制备相对低分子量的直链聚乙烯吡啶中是特别有利的，而不需要使用大量的催化剂来实现。

    Processes for the synthesis of imines, aldehydes, and unsymmetrical secondary amines
    7.
    发明授权
    Processes for the synthesis of imines, aldehydes, and unsymmetrical secondary amines 失效
    用于合成亚胺，醛和不对称仲胺的方法

    公开(公告)号：US5252741A

    公开(公告)日：1993-10-12

    申请号：US871084

    申请日：1992-04-20

    申请人： Gerald L. Goe ,  James G. Keay ,  Eric F. V. Scriven ,  Michael L. Prunier ,  Steven J. Quimby

    发明人： Gerald L. Goe ,  James G. Keay ,  Eric F. V. Scriven ,  Michael L. Prunier ,  Steven J. Quimby

    IPC分类号： C07D213/38 ,  C07D213/48 ,  C07D213/53 ,  C07D213/24

    CPC分类号： C07D213/53 ,  C07D213/38 ,  C07D213/48

    摘要： Imines are synthesized by the hydrogenation of pyridinecarbonitriles with amines in the presence of a rhodium-loaded catalyst. The resulting imines are stable and may be transiminated and then hydrogenated to form selected secondary amine products or may be hydrolyzed to aldehydes.Further, a very useful class of unsymmetrical secondary amines represented by the formula RCH.sub.2 NHAr (in which R is not aliphatic and Ar is aromatic and not attached to R), which has heretofore been accessible only with some difficulty, can be synthesized by processes herein disclosed utilizing the reductive intermolecular coupling of nitriles and primary aromatic amines.

    摘要翻译： 在负载铑的催化剂的存在下，吡啶羰腈与胺的氢化合成了亚胺。 所得的亚胺是稳定的并且可以被过渡化，然后氢化形成选择的仲胺产物，或者可以水解成醛。 此外，由式RCH2NHAr（其中R不是脂族且Ar是芳族且不连接到R）表示的非常有用的一类非对称仲胺，其迄今为止只有一些困难才可以获得，可以通过本文公开的方法合成 利用腈和伯芳基胺的还原分子间偶联。

    Process for preparing 2-halo-5-halomethylpyridines
    8.
    发明授权
    Process for preparing 2-halo-5-halomethylpyridines 失效
    制备2-卤代-5-卤代甲基吡啶的方法

    公开(公告)号：US5229519A

    公开(公告)日：1993-07-20

    申请号：US846898

    申请日：1992-03-06

    申请人： Tony Y. Zhang ,  Eric F. V. Scriven

    发明人： Tony Y. Zhang ,  Eric F. V. Scriven

    IPC分类号： C07D213/61

    CPC分类号： C07D213/61

    摘要： Disclosed are preferred processes for preparing a 2-halo-5-halomethylpyridine compound. The preferred processes involve cyclocondensing a 2-halo-2-halomethyl aldehyde or ketone of the formula (II) ##STR1## to form a 2-halo-2-halomethylpyridine compound of the formula (III) ##STR2## wherein X is Cl or Br, Y is a cyano group or an aminocarbonyl group, and R, R.sup.1, R.sup.2 and R.sup.3 are, independently, H or an organic radical which does not interfere with the cyclocondensation.

    摘要翻译： 公开了制备2-卤代-5-卤甲基吡啶化合物的优选方法。 优选的方法包括将式（II）的2-卤代-2-卤代甲基醛或酮环化为（II）以形成式（III）的2-卤代-2-卤代甲基吡啶化合物。 ）其中X为Cl或Br，Y为氰基或氨基羰基，R，R1，R2和R3独立地为H或不影响环缩合的有机基团。

    4-(N-benzyl-N-methylamino)pyridine acid salts and use in preparation of polymer-supported catalysts
    9.
    发明授权
    4-(N-benzyl-N-methylamino)pyridine acid salts and use in preparation of polymer-supported catalysts 失效
    4-（N-苄基-N-甲基氨基）吡啶酸盐，并用于制备聚合物负载的催化剂

    公开(公告)号：US5183895A

    公开(公告)日：1993-02-02

    申请号：US836257

    申请日：1992-02-18

    申请人： Donald W. McQuigg ,  Edward E. Sowers ,  Gerald L. Goe ,  Eric F. V. Scriven ,  James G. Keay

    发明人： Donald W. McQuigg ,  Edward E. Sowers ,  Gerald L. Goe ,  Eric F. V. Scriven ,  James G. Keay

    IPC分类号： C07D213/74

    CPC分类号： C07D213/74

    摘要： A cross-linked polymer-supported 4-(N-benzyl-N-methylamino) pyridine material and process for its preparation in high yield and having effective physical and catalytic properties. The polymer supported catalyst is characterized by the suspension copolymerization of an organic phase containing the corresponding vinyl-substituted pyridine monomer, a styrene monomer, and a suitable cross-linking agent and free radical-generating catalyst in the presence of an aqueous phase containing a cellulose ether derivative as the stabilizing agent. A purified acid salt of the vinyl-substituted pyridine monomer useful in polymerizations and stable for storage as either a solid or an aqueous solution.

    摘要翻译： 交联聚合物负载的4-（N-苄基-N-甲基氨基）吡啶材料及其高产率制备并具有有效物理和催化性能的方法。 聚合物负载催化剂的特征在于在含有纤维素的水相存在下，含有相应的乙烯基取代的吡啶单体，苯乙烯单体和合适的交联剂和产生自由基的催化剂的有机相的悬浮共聚 醚衍生物作为稳定剂。 乙烯基取代的吡啶单体的纯化酸盐可用于聚合并稳定存储为固体或水溶液。