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    Hydroxy terminated polyoxypropylene polyamides
    32.
    发明授权
    Hydroxy terminated polyoxypropylene polyamides 失效
    羟基封端的聚氧丙烯聚酰胺

    公开(公告)号：US5130382A

    公开(公告)日：1992-07-14

    申请号：US501815

    申请日：1990-03-30

    Applicant: George P. Speranza ,  Wei-Yang Su

    Inventor： George P. Speranza ,  Wei-Yang Su

    IPC: C08G18/60 ,  C08G69/40 ,  C08G69/44

    CPC classification number: C08G69/44 ,  C08G18/603 ,  C08G69/40 ,  C08G2101/0008 ,  C08G2101/0016 ,  C08G2101/0025

    Abstract: Hydroxy terminated polyamides are prepared having the formula: ##STR1## wherein R represents a defined hydrocarbon group,R' and R" represents defined oxypropylene groups, and R'" represents a defined oxyethylene group,the hydroxy terminated polyamide having been prepared by first preparing an intermediate dicarboxylic acid terminated polyoxypropylene polyamide by reacting an excess of a dicarboxylic acid component with a diamine mixture composed of a higher molecular weight polyoxypropylene diamine and a lower molecular weight polyoxypropylene diamine, and by reacting the intermediate polyamide with a molar excess of an oxyethylene amino alcohol.

    Polyether amide from mixture of polyether diamine
    34.
    发明授权
    Polyether amide from mixture of polyether diamine 失效
    聚氨酯混合物由聚醚二胺混合制成

    公开(公告)号：US5053484A

    公开(公告)日：1991-10-01

    申请号：US507261

    申请日：1990-04-10

    Applicant: George P. Speranza ,  Wei-Yang Su ,  Donald H. Champion

    Inventor： George P. Speranza ,  Wei-Yang Su ,  Donald H. Champion

    IPC: C08G69/28 ,  C08G69/40

    CPC classification number: C08G69/40

    Abstract: Novel polyether amides are produced by reacting a polyethylene glycol diamine and a first dicarboxylic acid or an ester thereof, with a polyoxyalkylene diamine of molecular weight of at least 500 and a second dicarboxylic acid or an ester thereof, where the polyethylene glycol diamine has the formula NH.sub.2 --(CH.sub.2 CH.sub.2 O).sub.x --CH.sub.2 CH.sub.2 --NH.sub.2, where x ranges from 2 to 6, and where the first and second dicarboxylic acid may be the same or different. Suitable dicarboxylic acids include adipic acid, azelaic acid, sebacic acid, dodecanedioic acid, terephthalic acid, isophthalic acid, t-butyl isophthalic acid, and mixtures thereof. Suitable polyethylene glycol diamines include triethylene glycol diamine (JEFFAMINE.RTM. EDR--148 Amine) and tetraethylene glycol diamine (JEFFAMINE.RTM. EDR--192 Amine), among others. Higher molecular weight polyether diamines are used in addition to these polyethylene glycol diamines to give polyether amides useful in making polymers, including fibers, having unusually good water absorbancy properties. The polyether amides are made by mixing equimolar salts of diamine/diacid pairs and then heating the mixture to condense to the polymer.

    Process for preparing oxazine derivatives
    37.
    发明授权
    Process for preparing oxazine derivatives 失效
    制备恶嗪衍生物的方法

    公开(公告)号：US4910303A

    公开(公告)日：1990-03-20

    申请号：US198903

    申请日：1988-05-26

    Applicant: Wei-Yang Su ,  John F. Knifton

    Inventor： Wei-Yang Su ,  John F. Knifton

    IPC: C07D265/30

    CPC classification number: C07D265/30

    Abstract: This invention relates to the reaction of N-alkyl-bis-(2-hydroxyalkyl)amines to form oxazine derivatives by a process comprising reacting said amines in the presence of a ruthenium-containing compound and hydrogen acceptor.

    Abstract translation: 本发明涉及N-烷基 - 双 - （2-羟基烷基）胺与恶嗪衍生物的反应，该方法包括在含钌化合物和氢受体存在下使所述胺反应。

    Color stabilization of amines
    39.
    发明授权
    Color stabilization of amines 有权
    胺的稳定化

    公开(公告)号：US07169268B2

    公开(公告)日：2007-01-30

    申请号：US10456655

    申请日：2003-06-06

    Applicant: Wei-Yang Su ,  Mark L. Posey ,  Maarten P. ter Weeme

    Inventor： Wei-Yang Su ,  Mark L. Posey ,  Maarten P. ter Weeme

    IPC: B01D3/34 ,  C07C209/82

    CPC classification number: C07C213/10 ,  C07C209/84 ,  C07C209/90 ,  C07C211/05 ,  C07C211/14 ,  C07C215/08 ,  C07C217/08

    Abstract: The present invention concerns a process for providing tertiary amine products which are color-stable, and have a greatly reduced tendency to take on color during their storage. According to the invention, an ethyleneamine derivative is added to the distillation pot prior to or during the distillation of the tertiary amine product. Preferably, the ethyleneamine derivative has a higher boiling point than the desired tertiary amine product so as to preclude the ethyleneamine from distilling over with the tertiary amine.

    Abstract translation: 本发明涉及提供颜色稳定的叔胺产物的方法，并且在其储存期间具有大大降低的颜色倾向。 根据本发明，在蒸馏叔胺产物之前或期间，将乙烯胺衍生物加入到蒸馏罐中。 优选地，亚乙基胺衍生物的沸点高于所需的叔胺产物，以排除乙胺与叔胺蒸馏。

    Process for removing carbon dioxide from gas mixture
    40.
    发明授权
    Process for removing carbon dioxide from gas mixture 失效
    从气体混合物中除去二氧化碳的方法

    公开(公告)号：US5861051A

    公开(公告)日：1999-01-19

    申请号：US720587

    申请日：1996-09-30

    Applicant: James E. Critchfield ,  Wei-Yang Su ,  Thomas J. Kenney ,  Patrick E. Holub

    Inventor： James E. Critchfield ,  Wei-Yang Su ,  Thomas J. Kenney ,  Patrick E. Holub

    IPC: B01D53/14 ,  B01D47/06

    CPC classification number: B01D53/1462 ,  B01D53/1493 ,  Y02C10/06

    Abstract: This invention relates to a process for the separation of carbon dioxide and hydrogen sulfide from gases using a promoted methyldiethanolamine (MDEA) solution. In one broad respect, this invention is a gas separation process, including contacting an aqueous treating solution with a sour gas stream that contains carbon dioxide and hydrogen sulfide under conditions such that the gas stream is sweetened, wherein the aqueous treating solution contains methyldiethanol amine and 2-(2-aminoethoxy)ethanol in a ratio of at least about 2:1; and wherein the process is conducted in the absence of a reclamation step. By practice of this invention, the amount of 2-(2-aminoethoxy)ethanol that is converted to urea(bis-(2-hydroxyethoxyethyl)urea (BHEEU)) is minimized which obviates the need for a reclamation (regeneration) unit.

    Abstract translation: 本发明涉及使用促进的甲基二乙醇胺（MDEA）溶液从气体中分离二氧化碳和硫化氢的方法。 在一个广泛的方面，本发明是一种气体分离方法，包括使水处理溶液与含有二氧化碳和硫化氢的酸性气流接触，使得气流变甜的条件下，其中水处理溶液含有甲基二乙醇胺和 2-（2-氨基乙氧基）乙醇，其比例为至少约2:1; 并且其中所述方法在没有回收步骤的情况下进行。 通过本发明的实践，将转化成尿素（双 - （2-羟基乙氧基乙基）脲（BHEEU））的2-（2-氨基乙氧基）乙醇的量最小化，这避免了对回收（再生）单元的需要。

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