知搜-全球专利检索

  1. Login
  2. Sign Up

Search Results

40 records (took 0.013 seconds)

    Stabilization method of cycloalkanone oxime
    4.
    发明申请
    Stabilization method of cycloalkanone oxime 失效
    环烷酮肟稳定方法

    公开(公告)号：US20050119479A1

    公开(公告)日：2005-06-02

    申请号：US10995253

    申请日：2004-11-24

    Applicant: Masami Fukao ,  Noriaki Tanaka

    Inventor： Masami Fukao ,  Noriaki Tanaka

    IPC: C07C249/14 ,  C07C251/44 ,  C07D201/04 ,  C07C251/42

    CPC classification number: C07C249/14 ,  C07C2601/14 ,  C07C251/44

    Abstract: Cycloalkanone oxime is stabilized by a method comprising bringing the cycloalkanone oxime into contact with at least one compound selected from the group consisting of oxoacids, oxoacid salts, oxoacid esters, oxoacid amides and oxides of boron or phosphorus. In accordance with the invention, the thermal stability of cycloalkanone oxime can be improved.

    Abstract translation: 通过包括使环烷酮肟与至少一种选自含氧酸，含氧酸盐，含氧酸酯，含氧酰胺和硼或磷的氧化物的化合物接触的方法来稳定环烷酮酮肟。 根据本发明，可以提高环烷酮肟的热稳定性。

    Recovery of products from toluenediisocyanate residues
    5.
    发明授权
    Recovery of products from toluenediisocyanate residues 失效
    从甲苯二异氰酸酯残留物中回收产物

    公开(公告)号：US5902459A

    公开(公告)日：1999-05-11

    申请号：US661176

    申请日：1996-06-10

    Applicant: Steven D. Gagnon ,  Sandy A. Bananto

    Inventor： Steven D. Gagnon ,  Sandy A. Bananto

    IPC: C07C209/00 ,  C07C263/06 ,  C07D233/30 ,  B01D3/34 ,  C07C249/14 ,  C08G18/08

    CPC classification number: C07D233/30 ,  C07C209/62

    Abstract: There is now provided a method of recycling toluenediisocyanate residue resulting from the production of toluenediisocyanate by the reaction of toluenediamine by phosgenation in the presence of a solvent. In accordance with the teachings of the present invention, the toluenediisocyanate residue is treated at reflux with an alkanolamine to obtain an intermediary product which is distilled thereby giving rise to various products including but not limited to at least one component selected from toluenediamine, oxazolidone and hydroxyethylimidiazolidone. Preferably the alkanolamine employed is a monoethanolamine.

    Abstract translation: 现在提供一种在溶剂存在下通过甲苯二胺通过光气化反应而产生甲苯二异氰酸酯产生的甲苯二异氰酸酯残基的方法。 根据本发明的教导，甲苯二异氰酸酯残基用链烷醇胺回流处理以获得中间产物，其被蒸馏，从而产生各种产物，包括但不限于选自甲苯二胺，恶唑烷酮和羟乙基亚氨基二唑烷酮中的至少一种 。 优选使用的链烷醇胺是单乙醇胺。

    Process for production of aromatic aldoximes
    6.
    发明授权
    Process for production of aromatic aldoximes 失效
    芳族醛肟生产工艺

    公开(公告)号：US4922017A

    公开(公告)日：1990-05-01

    申请号：US208438

    申请日：1988-06-20

    Applicant: Chempolil T. Mathew

    Inventor： Chempolil T. Mathew

    IPC: C07C249/04 ,  C07C249/14 ,  C07C251/48

    CPC classification number: C07C251/48 ,  C07C249/04

    Abstract: A process for preparing an aromatic aldoxime, such as benzaldehyde oxime, by reacting the corresponding, .alpha.,.alpha.-dihalide, such as benzal chloride, with a hydroxylamine salt in the presence of an excess of an aqueous base sufficient to maintain the product oxime in solution. Organic impurities may be phase separated from the reaction mixture. Thereafter, the aqueous solution containing product oxime is neutralized to separate an oxime phase, which may be recovered by decanting or solvent extraction.

    Abstract translation: 通过使相应的α，α-二卤化物如苄基氯与羟胺盐在过量的碱水溶液存在下反应制备芳族醛肟如苯甲醛肟的方法，足以使产物肟保持在 解。 有机杂质可以与反应混合物相分离。 此后，将含有产物肟的水溶液中和以分离肟相，其可以通过倾析或溶剂萃取来回收。

    Reactor having titanium silicate recycling
    8.
    发明授权
    Reactor having titanium silicate recycling 有权
    反应器具有硅酸钛回收

    公开(公告)号：US08021632B2

    公开(公告)日：2011-09-20

    申请号：US12207169

    申请日：2008-09-09

    Applicant: Goetz Baumgarten ,  Martin Roos ,  Stephan Schaeflein ,  Rolf Augenstein

    Inventor： Goetz Baumgarten ,  Martin Roos ,  Stephan Schaeflein ,  Rolf Augenstein

    IPC: B01J8/00 ,  C07C249/04 ,  C07C249/14

    CPC classification number: C07C249/04 ,  B01J8/006 ,  B01J8/009 ,  B01J8/20 ,  B01J29/89 ,  B01J2208/00867 ,  B01J2219/0004 ,  C07C251/44 ,  Y02P20/584

    Abstract: The invention relates to a plant for carrying out chemical reactions, having a reactor (1), the reaction space of which contains hydrogen peroxide (H2O2) and titanium silicalite (TS-1). The object of the invention is to improve such a plant such that continuous separation and recycling of the active catalyst to the reaction space is possible with a long filter service life. This is achieved in that the reaction space contains a solid silicon source, in that the plant comprises a water takeoff line (3) which is set up for drawing off water in addition to components which are dissolved and/or dispersed therein from the reaction space, in that the water takeoff line (3) leads to a filter (4) which separates off the components which are dissolved and/or dispersed in the water, and in that the plant has a return line (5) which is set up for recirculating to the reaction space components which are separated off by means of the filter (4).

    Abstract translation: 本发明涉及一种用于进行化学反应的设备，其具有反应器（1），其反应空间含有过氧化氢（H 2 O 2）和钛硅沸石（TS-1）。 本发明的目的是改进这种设备，使得活性催化剂在反应空间的连续分离和循环是可能的，并具有长的过滤器使用寿命。 这是通过反应空间包含固体硅源实现的，因为该设备包括除了从反应空间溶解和/或分散在其中的组分除去水以外的水引出线（3） 因为水引出线（3）通过一个过滤器（4），该过滤器（4）将溶解和/或分散在水中的组分分离出来，并且该设备具有一个回流管线（5） 再循环到通过过滤器（4）分离的反应空间部件。

    Method for producing benzyl bromide derivatives
    10.
    发明授权
    Method for producing benzyl bromide derivatives 失效
    苄基溴衍生物的制备方法

    公开(公告)号：US5962723A

    公开(公告)日：1999-10-05

    申请号：US154631

    申请日：1998-09-17

    Applicant: Kenzi Takuma ,  Akiko Kakimizu ,  Tomoyuki Kusaba

    Inventor： Kenzi Takuma ,  Akiko Kakimizu ,  Tomoyuki Kusaba

    IPC: C07C249/12 ,  C07C249/14 ,  C07C251/48 ,  C07C229/28

    CPC classification number: C07C249/12 ,  C07C249/14

    Abstract: The method for producing the benzyl bromide derivatives of the formula: ##STR1## wherein R.sub.1 represents a C.sub.1 to C.sub.5 alkyl group, which comprises reacting a 2-methylphenylacetic acid derivative of the formula: ##STR2## wherein R.sub.1 represents the same meaning above, with bromine in the presence of an alkali metal salt. In case that R.sup.1 is an ethyl or isopropyl group, the recrystallization of the above reaction product from aliphatic hydrocarbon solution gives the benzyl bromide derivatives efficiently and in high purity.

    Abstract translation: 制备下式的苄基溴衍生物的方法：其中R1表示C1至C5烷基，其包括使下式的2-甲基苯基乙酸衍生物与其中R 1表示与上述相同的含义：在 碱金属盐。 在R1是乙基或异丙基的情况下，上述反应产物从脂族烃溶液中重结晶得到苄基溴衍生物有效且高纯度。

Patent Agency Ranking