Method for producing methacrylic acid
    43.
    发明授权
    Method for producing methacrylic acid 有权
    生产甲基丙烯酸的方法

    公开(公告)号:US08575388B2

    公开(公告)日:2013-11-05

    申请号:US12864985

    申请日:2009-01-13

    IPC分类号: C07C57/065

    CPC分类号: C07C51/06 C07C57/04

    摘要: The present invention relates to a method for producing methacrylic acid by reacting methacrylamide with water, wherein said reaction is performed continuously in a tube reactor and a pressure differential exists in the flow direction of the reaction mixture inside said tube reactor. Furthermore, the present invention discloses a facility for carrying out the method according to the invention.

    摘要翻译: 本发明涉及通过使甲基丙烯酰胺与水反应生产甲基丙烯酸的方法,其中所述反应在管式反应器中连续进行,并且在所述管式反应器内的反应混合物的流动方向上存在压差。 此外,本发明公开了一种用于实施本发明的方法的设备。

    Device usable as gripper head or chuck
    48.
    发明授权
    Device usable as gripper head or chuck 失效
    可用作夹头或卡盘的装置

    公开(公告)号:US08403338B2

    公开(公告)日:2013-03-26

    申请号:US12436496

    申请日:2009-05-06

    申请人: Eugen Hangleiter

    发明人: Eugen Hangleiter

    IPC分类号: B23B31/103

    摘要: A device for clamping a stem has a body forming a piston chamber and having an axially outwardly open hole adapted to receive the stem and a plurality of collet jaws in the hole shiftable axially by a piston between an outer releasing position with its axial outer ends radially spread and an inner holding position with the ends more closely radially juxtaposed. The stem is engageable axially in the hole between the jaws and lockable in the body in the inner holding position. A main spring urges the piston and jaws axially inward into the inner position. A cover element has an outer head and is axially shiftable relative to the piston between an extended position with the head engaged radially between the outer ends of the jaws and a retracted position with the head spaced axially inward from the outer ends of the jaws.

    摘要翻译: 用于夹紧杆的装置具有形成活塞室的主体,并且具有适于容纳杆的轴向向外敞开的孔和孔中的多个夹头,所述孔可在轴向外端部的外部释放位置之间的活塞轴向移动, 扩展和内部保持位置,其端部更紧密地径向并置。 杆可以轴向地接合在夹爪之间的孔中,并在内部保持位置可锁定在主体中。 主弹簧将活塞和轴向轴向向内推入内部位置。 盖元件具有外部头部并且可相对于活塞轴向移动,该延伸位置在头部与径向插入爪的外端之间的头部和缩回位置之间,其中头部与夹爪的外端轴向向内间隔开。

    Composition with increased stress cracking resistance
    50.
    发明申请
    Composition with increased stress cracking resistance 失效
    具有增加的抗开裂性的组合物

    公开(公告)号:US20120322932A1

    公开(公告)日:2012-12-20

    申请号:US13506268

    申请日:2012-06-26

    IPC分类号: C08L33/12 B29C45/00 C08K5/05

    摘要: Provided is a molding composition comprising, based on the total weight of the composition, (A) 50.0% by weight to 99.5% by weight of at least one (co)polymer which is a homopolymer or copolymer of at least 80% by weight of methyl methacrylate, (B) 0.5% by weight to 50.0% by weight of at least one copolymer obtained by polymerization of a monomer, and (C) at least one low molecular weight (meth)acrylate (co)polymer having a solution viscosity in chloroform at 25° C. (ISO 1628—part 6) of less than or equal to 55 ml/g.

    摘要翻译: 本发明提供一种成型组合物,其包含基于组合物的总重量的(A)50.0重量%至99.5重量%的至少一种(共)聚合物,其为均聚物或共聚物,其为至少80重量% 甲基丙烯酸甲酯,(B)0.5重量%〜50.0重量%的至少一种通过单体聚合获得的共聚物,和(C)至少一种具有溶液粘度的低分子量(甲基)丙烯酸酯 25℃下的氯仿(ISO 1628-第6部分)小于或等于55ml / g。