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    Process for producing methyl methacrylate polymers
    3.
    发明授权
    Process for producing methyl methacrylate polymers 失效
    生产甲基丙烯酸甲酯聚合物的方法

    公开(公告)号：US3968059A

    公开(公告)日：1976-07-06

    申请号：US546883

    申请日：1975-02-04

    申请人： Kazushi Shimada ,  Toru Maeda ,  Tamotu Nishizawa ,  Yositaka Sasaki ,  Takehiko Narisada ,  Hisao Anzai

    发明人： Kazushi Shimada ,  Toru Maeda ,  Tamotu Nishizawa ,  Yositaka Sasaki ,  Takehiko Narisada ,  Hisao Anzai

    IPC分类号： C08F2/00 ,  C08F2/02 ,  C08F6/00 ,  C08F6/06 ,  C08F20/14 ,  C08F6/28 ,  C08F20/18

    CPC分类号： C08F20/14

    摘要： A process of producing methyl methacrylate polymers is provided wherein the monomer are polymerized by a bulk polymerization procedure at 150.degree. to 180.degree.C with a conversion of 50 to 80% and the volatiles predominantly comprised of the unreacted monomer, separated from the polymer product, are cyclically reused as a part of the monomer feed for polymerization. In such a monomer feed cycle system, oligomers are substantially removed from the volatiles and then the volatiles are blended with a virgin monomer feed for polymerization, the content in the volatiles of impurities having boiling points of lower than 200.degree.C at normal pressure is maintained within the range of 5 to 20% by weight.

    摘要翻译： 提供了生产甲基丙烯酸甲酯聚合物的方法，其中单体通过本体聚合方法在150℃至180℃下进行聚合，转化率为50至80％，主要由未聚合的单体组成的挥发物与聚合物产物分离， 作为聚合单体进料的一部分循环使用。 在这种单体进料循环系统中，基本上从挥发物中除去低聚物，然后将挥发物与原始单体进料共混以进行聚合，保持在常压下沸点低于200℃的杂质挥发物中的含量 在5至20重量％的范围内。

    Semiconductor package, printed board mounted with the same, and electronic apparatus having the printed board
    4.
    发明授权
    Semiconductor package, printed board mounted with the same, and electronic apparatus having the printed board 有权
    半导体封装，安装有印刷电路板的印刷电路板和具有印刷电路板的电子设备

    公开(公告)号：US07268427B2

    公开(公告)日：2007-09-11

    申请号：US11003402

    申请日：2004-12-06

    申请人： Hisao Anzai

    发明人： Hisao Anzai

    IPC分类号： H01L23/10 ,  H01L23/34

    CPC分类号： H01L23/367 ,  H01L23/36 ,  H01L2924/0002 ,  H01L2924/00

    摘要： A holding fixture that holds a component and mounts the component on an electronic circuit board includes a holding member that holds the component at a side of a first surface of the electronic circuit board, a first fixing member that includes a first base that is engageable with the holding member, and an elastic member that is pivotally attached to the base, sandwiches the electronic circuit board at a side of a second surface of the electronic circuit board, and elastically supports the holding member at the side of the first surface, the second surface opposing to the first surface, and a second fixing member that includes a second base that is engageable with the holding member, and a projection member that projects from the second surface of the electronic circuit board and is engageable with the elastic member.

    摘要翻译： 保持部件并将部件安装在电子电路板上的保持夹具包括：保持部件，其将部件保持在电子电路板的第一表面的一侧;第一固定部件，其包括可与 所述保持构件和可枢转地附接到所述基座的弹性构件在所述电子电路板的第二表面的一侧夹着所述电子电路板，并且在所述第一表面侧弹性地支撑所述保持构件，所述第二 与第一表面相对的表面，以及包括可与保持构件接合的第二基座的第二固定构件，以及从电子电路板的第二表面突出并与弹性构件接合的突出构件。

    Methacrylimide-containing polymer
    7.
    发明授权
    Methacrylimide-containing polymer 失效
    含甲基丙烯酰亚胺的聚合物

    公开(公告)号：US5096976A

    公开(公告)日：1992-03-17

    申请号：US458072

    申请日：1989-12-28

    申请人： Isao Sasaki ,  Kozi Nishida ,  Hisao Anzai

    发明人： Isao Sasaki ,  Kozi Nishida ,  Hisao Anzai

    IPC分类号： C08F8/32 ,  C08F8/48 ,  C08F20/52

    CPC分类号： C08F8/32

    摘要： Disclosed is a thermoplastic methacrylimide-containing polymer comprising 2 to 100% by weight of structural units represented by the following formula (I): ##STR1## wherein R is hydrogen or a hydrocarbon group having 1 to 20 carbon atoms, and 0 to 98% by weight of structural units derived from an ethylenically unsaturated monomer, wherein the number of fine particles having a size of 0.5 to 25 .mu.m as measured by a particle counter in the polymer is not more than 50,000 per gram of the polymer.

    Methacrylimide containing polymer
    8.
    发明授权
    Methacrylimide containing polymer 失效
    含甲基丙烯酰亚胺的聚合物

    公开(公告)号：US4954575A

    公开(公告)日：1990-09-04

    申请号：US458396

    申请日：1989-12-28

    申请人： Isao Sasaki ,  Kozi Nishida ,  Hisao Anzai

    发明人： Isao Sasaki ,  Kozi Nishida ,  Hisao Anzai

    IPC分类号： C08F8/32 ,  C08F8/48 ,  C08F20/52

    CPC分类号： C08F8/48

    摘要： A methacrylimide containing polymer, which is a thermoplastic polymer comprising from 2 to 100% by weight of a structural unit represented by the general formula (I): ##STR1## where R represents a hydrogen atom or an aliphatic group, aromatic group or cycloaliphatic hydrocarbon group with 1 to 20 carbon atoms, and from 0 to 98% by weight of a structural unit derived from an ethylenic monomer, in which a distribution range of an imidization radio of the polymer is less than 5%. The methacrylimide containing polymer has excellent transparency and heat resistance.

    Light transmitting fiber
    10.
    发明授权
    Light transmitting fiber 失效
    光传输光纤

    公开(公告)号：US4804259A

    公开(公告)日：1989-02-14

    申请号：US854615

    申请日：1986-04-22

    申请人： Isao Sasaki ,  Kozi Nishida ,  Masaru Morimoto ,  Hisao Anzai ,  Hideaki Makino

    发明人： Isao Sasaki ,  Kozi Nishida ,  Masaru Morimoto ,  Hisao Anzai ,  Hideaki Makino

    IPC分类号： G02B6/10 ,  C08F8/48 ,  C08F20/00 ,  C08F20/22 ,  C08F220/02 ,  C08F220/22 ,  G02B1/04 ,  G02B6/00 ,  G02B6/02 ,  D02G3/00 ,  B29D11/00

    CPC分类号： G02B1/046 ,  G02B6/02033 ,  Y10T428/2929 ,  Y10T428/2933 ,  Y10T428/2964 ,  Y10T428/2967 ,  Y10T428/2969

    摘要： Disclosed is an improved light transmitting fiber comprising a transparent inorganic substance or organic polymeric material as a core component and a methacrylate polymer as a cladding component. The methacrylate polymer is a methacrylimide-containing fluoroalkyl methacrylate polymer comprising (A) 2 to 98 weight % of methacrylimide units of formula (I): ##STR1## wherein R represents a hydrogen atom or a hydrocarbon group having 1 to 20 carbon atoms, (B) 98 to 2 weight % of structural units derived from a fluoroalkyl methacrylate monomer, and (C) 0 to 50 weight % of structural units derived from a monomer copolymerizable with the monomer (B).

    摘要翻译： 公开了一种改进的透光纤维，其包含作为核心组分的透明无机物质或有机聚合物材料和作为包覆组分的甲基丙烯酸酯聚合物。 甲基丙烯酸酯聚合物是含甲基丙烯酰亚胺的甲基丙烯酸氟代烷基酯聚合物，其包含（A）2至98重量％的式（I）的甲基丙烯酰亚胺单元：其中R表示氢原子或具有1至20个碳原子的烃基 原子，（B）98〜2重量％的衍生自甲基丙烯酸氟烷基酯单体的结构单元，（C）0〜50重量％的衍生自可与单体（B）共聚的单体的结构单元。