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    • 3. 发明授权
    • Low stress polyimide composition and precursor composition solution of
same
    • 低应力聚酰亚胺组合物和前体组合物溶液相同
    • US5478918A
    • 1995-12-26
    • US189774
    • 1994-02-01
    • Masamichi MarutaHidehisa NanaiYoshihiro MoroiHiroshi TakahashiSeiji Hasegawa
    • Masamichi MarutaHidehisa NanaiYoshihiro MoroiHiroshi TakahashiSeiji Hasegawa
    • C08G73/10C08G73/12C08L79/04C08L79/08
    • C08G73/106C08G73/1039C08G73/121C08L79/08C08L79/085
    • A polyimide precursor composition solution includes a tetracarboxylic acid component containing not less than 70 mol % of at least one selected from the group consisting of benzenetetracarboxylic acid and its reactive derivatives; a maleimide compound; and a diamine component containing not less than 70 mol % of 2,2'-substituted-4,4'-benzidine represented by the general formula (I) and siloxydiamine amounting to from 1 to 10 mol %. The tetracarboxylic acid component, the maleimide compound and the diamine component are dissolved in a solvent which is consisting essentially of .gamma.-butyrolactone. The amount of the tetracarboxylic acid component is substantially equivalent to that of the diamine component. The amount of the maleimide compound is from 5 to 30 wt % of the total weight of the tetracarboxylic acid and the diamine component. A polyimide coating film prepared from the polyamide precursor solution is very low in residual stress and superior in adhesion to a substrate, has a very flat surface and can be desirably treated by wet etching process with an etching solution which is not hazardous. ##STR1## wherein R are the same or different ones selected from the group consisting of CF.sub.3, CH.sub.3, C.sub.2 H.sub.5, OCH.sub.3, OC.sub.2 H.sub.5, Cl, Br and phenyl group.
    • 聚酰亚胺前体组合物溶液包括含有不少于70mol%的选自苯四甲酸及其活性衍生物中的至少一种的四羧酸组分; 马来酰亚胺化合物; 和含有不少于70摩尔%的由通式(I)表示的2,2'-取代-4,4'-联苯胺和1〜10摩尔%的硅氧酰胺的二胺成分。 将四羧酸组分,马来酰亚胺化合物和二胺组分溶解在基本上由γ-丁内酯组成的溶剂中。 四羧酸组分的量基本上等于二胺组分的量。 马来酰亚胺化合物的量为四羧酸和二胺成分总重量的5〜30重量%。 由聚酰胺前体溶液制备的聚酰亚胺涂膜的残留应力非常低,并且对基材的粘合性优异,具有非常平坦的表面,并且可以通过湿法蚀刻工艺优选用不危险的蚀刻溶液处理。 (I)其中R是选自CF 3,CH 3,C 2 H 5,OCH 3,OC 2 H 5,Cl,Br和苯基的相同或不同的基团。
    • 4. 发明授权
    • Process for producing polyimide platy object
    • 生产聚酰亚胺板状物体的方法
    • US06750320B2
    • 2004-06-15
    • US10078265
    • 2002-02-20
    • Yoshihiro MoroiHidehisa NanaiYuji YamamotoShigeki Sakaguchi
    • Yoshihiro MoroiHidehisa NanaiYuji YamamotoShigeki Sakaguchi
    • B32B2700
    • B29C41/003B29C41/12B29C67/246B29K2079/08B29K2105/0073B29L2011/00Y10T428/31721
    • A process for producing a polyimide platy object includes (a) providing a solution containing a solvent and a solute (i.e., a polyimide precursor or polyimide); (b) pouring the solution onto a supporting member; (c) removing a portion of the solvent from the solution at a first temperature lower than boiling point of the solvent, thereby forming a precursory platy object thereon, the precursory platy object having a self-supporting property and a first surface in contact with the supporting member and a second surface away therefrom and a first content of the solvent at the first surface and a second content (less than the first content by 2-10 wt %) of the solvent at the second surface; and (d) detaching the precursory platy object therefrom; and (e) heating the precursory platy object at a second temperature higher than boiling point of the solvent and is lower than decomposition temperature of the polyimide.
    • 制备聚酰亚胺板状物体的方法包括(a)提供含有溶剂和溶质(即聚酰亚胺前体或聚酰亚胺)的溶液; (b)将溶液倾倒到支撑构件上; (c)在低于溶剂沸点的第一温度下从溶液中除去一部分溶剂,从而在其上形成前体片状物体,所述前体片状物体具有自支撑性质和与所述第一表面接触的第一表面 支撑构件和离开其的第二表面和第一表面处的溶剂的第一含量和第二表面处的溶剂的第二含量(小于第一含量2-10重量%); 和(d)从其中分离前体片状物体; 和(e)在高于溶剂沸点的第二温度下加热前体片状物体,并且低于聚酰亚胺的分解温度。
    • 5. 发明申请
    • Optical Axis Converting Element and Method for Manufacturing the Same
    • 光轴转换元件及其制造方法
    • US20100172620A1
    • 2010-07-08
    • US12602018
    • 2008-05-29
    • Hidehisa Nanai
    • Hidehisa Nanai
    • G02B6/10G02B6/04
    • G02B6/12002G02B6/122G02B6/13
    • Disclosed in a multichannel optical waveguide device characterized by comprising: a structure including a cladding and having a light-incident end surface, a light-outgoing end surface, and a plurality of flat reflection surfaces located parallel with each other; and L-shaped cores embedded in the cladding, the L-shaped cores being three-dimensionally arranged parallel with each other in m rows and n columns (where m and n are 2 or more), each L-shaped core having end faces which are exposed respectively to the light-incident end surface and the light-outgoing end surface, m number of the L-shaped cores in each column guiding light from the light-incident end surface to the light-outgoing end surface by changing direction of light on n number of the flat reflection surfaces, wherein an interval between the two adjacent cores on the light-incoming end surface is different from an interval between the two adjacent cores on the light-outgoing end surface, the two adjacent cores on the light-incoming end surface respectively corresponding to the two adjacent cores on the light-outgoing end surface.
    • 本发明涉及一种多通道光波导器件,其特征在于包括:具有包层的结构,具有光入射端面,发光端面以及平行的多个平面反射面; 嵌入在包层中的L字形芯,L字形芯彼此平行地排列成m行n列(其中m和n为2以上),每个L形磁芯的端面为 分别暴露于光入射端面和发光端面,每列中的L数个芯的m个数通过改变光的方向将来自光入射端面的光引导到出光端面 在n个平面反射面上,其中光入射端面上的两个相邻的芯之间的间隔与发光端面上的两个相邻的芯之间的间隔不同, 入射端面分别对应于光出射端面上的两个相邻的芯。