Electrorheological fluid composition comprising an electrically
insulating oil and dielectric particles of polymer grafted carbon black
dispersed thereon
    2.
    发明授权
    Electrorheological fluid composition comprising an electrically insulating oil and dielectric particles of polymer grafted carbon black dispersed thereon 失效
    电流变流体组合物,其包含分散在其上的电绝缘油和聚合物接枝炭黑的介电颗粒

    公开(公告)号:US6096235A

    公开(公告)日:2000-08-01

    申请号:US859211

    申请日:1997-05-20

    IPC分类号: C10M169/04 C10M171/00

    CPC分类号: C10M171/001

    摘要: An electrorheological fluid composition comprises dielectric particles as a disperse-phase and an electrically insulating oil as a dispersion medium, wherein the dielectric particle has a polymer portion and an electrically conductive carbon black portion and the polymer portion is grafted on the carbon black portion. The electrorheological fluid composition shows a large change in viscosity and the small current properties under an applied electric field, and excellent fluidity and dispersion stability in an absence of an applied electric field.

    摘要翻译: 电流变流体组合物包含作为分散相的电介质颗粒和作为分散介质的电绝缘油,其中所述电介质颗粒具有聚合物部分和导电炭黑部分,并且所述聚合物部分接枝在所述炭黑部分上。 电粘滞性液体组合物在施加的电场下显示粘度的大的变化和小的电流特性,以及在没有施加电场的情况下优异的流动性和分散稳定性。

    Crosslinked elastomer and producing process thereof
    3.
    发明授权
    Crosslinked elastomer and producing process thereof 失效
    交联弹性体及其制备方法

    公开(公告)号:US06218465B1

    公开(公告)日:2001-04-17

    申请号:US09031702

    申请日:1998-02-27

    IPC分类号: C08J510

    摘要: For example, a blended composition is produced first by letting a monomer composition, mainly composed of alkyl (meth)acrylate and including a compound having a plurality of polymeric groups within a molecule, contain microscopic particles, such as carbon black, having an average primary particle size in a range between 1 nm and 200 nm, and then the blended composition is polymerized. Consequently, it has become possible to produce inexpensive crosslinked elastomer having excellent physical properties, such as small creep (low creep) in compression set, tensile elongation set, etc., and excellent mechanical strength, such as tensile break strength and tensile break elongation, in a simple procedure omitting the post-crosslinking step at a high-level productivity while saving energy and time spent in the kneading step.

    摘要翻译: 例如,首先通过使主要由(甲基)丙烯酸烷基酯组成的单体组合物,并且在分子内包含具有多个聚合基团的化合物包含具有平均初级的微观颗粒(例如炭黑)来制备共混组合物 粒度在1nm和200nm之间的范围内,然后共混组合物聚合。 因此,可以生产出具有优异的物理性能的低价交联弹性体,如压缩永久变形中的蠕变(蠕变低),拉伸伸长率设定等,以及拉伸断裂强度和拉伸断裂伸长率等优异的机械强度, 以简单的方法省略了高级生产率的后交联步骤,同时节省了在捏合步骤中消耗的能量和时间。

    TRANSPARENT RESIN MATERIAL
    8.
    发明申请
    TRANSPARENT RESIN MATERIAL 失效
    透明树脂材料

    公开(公告)号:US20050282996A1

    公开(公告)日:2005-12-22

    申请号:US10908843

    申请日:2005-05-27

    CPC分类号: G02B1/04 C08G65/4025

    摘要: The present invention has an object to provide a transparent resin material having a low water absorption ratio without deteriorating various properties such as transparency which transparent resin has and also having a controllable refractive index. The present invention provides a transparent resin material containing a polymer capable of forming a formed product having transparency, wherein the transparent resin material comprises a fluorine atom-containing polymer and/or compound and contains 0.3 to 35% by weight of a fluorine atom in 100% by weight of the formed product.

    摘要翻译: 本发明的目的是提供一种透明树脂材料,其具有低的吸水率,而不会使诸如透明树脂具有的透明性和折射率可控的各种性能恶化。 本发明提供一种透明树脂材料,其含有能够形成具有透明性的成型体的聚合物,其中,所述透明树脂材料含有含氟原子的聚合物和/或化合物,并且含有0.3〜35重量%的氟原子100 重量%的成型产品。

    Method for deaerating electrorheological fluid in a closed device
    9.
    发明授权
    Method for deaerating electrorheological fluid in a closed device 失效
    封闭装置中电流变流体脱气的方法

    公开(公告)号:US06837919B2

    公开(公告)日:2005-01-04

    申请号:US10259329

    申请日:2002-09-30

    IPC分类号: B01D19/00

    CPC分类号: B01D19/0036

    摘要: According to the present invention, electrorheological fluid is deaerated after it is sealed in a closed device which is operated by the electrorheological fluid. Thus, it is possible to control the operation of the closed device in accordance with an electric field. Additionally, the control of viscosity is not affected by repetitive operations of the closed device, thereby obtaining a closed device having a smooth operation and good repeatability. The deaeration is achieved under a predetermined reduced pressure, for example, of not more than 100 torr. In addition thereto, a suitable heating process is carried out as required.

    Method for production of halogen-containing aromatic compound

    公开(公告)号:US06433231B1

    公开(公告)日:2002-08-13

    申请号:US09886805

    申请日:2001-06-21

    IPC分类号: C07C4700

    摘要: A method for producing inexpensively in a high yield a halogen-containing aromatic compound, particularly a halogen-containing aromatic compound incorporating therein a bromodifluoroalkyl group, and a halogen-containing naphthalene compound useful as a raw material for a resin excelling in heat resistance, chemical resistance and water repellency, and having a low dielectric constant and a low refractivity are provided. This invention relates to a method for the production of an aromatic compound (II) having a (CH2)nCX2Br group (wherein X represents a fluorine or chlorine atom and the X's may be same or different, and n is an integer in the range of 0 to 4) by the reaction of photo-bromination of an aromatic compound (I) having a (CH2)nCX2H group (wherein X and n are as defined above) with a brominating agent, wherein the photo-bromination reaction is carried out while removing hydrogen bromide generated in the reaction system and/or in an atmosphere of a low oxygen content, and a halogen-containing naphthalene compound represented by the following formula (1): wherein Y represents —CF2H, —CF2Br, or —CHO group, Z1 and Z2 independently represent a halogen atom, and p and q independently are an integer in the range of 0 to 3.