公开(公告)号：US5188898A

公开(公告)日：1993-02-23

申请号：US667401

申请日：1991-04-04

申请人： Kimiteru Tagawa ,  Seiichi Takahashi ,  Noritoshi Utsuno ,  Hideki Umehara ,  Fujio Hayashi ,  Shigeo Kiba ,  Satoru Suda

发明人： Kimiteru Tagawa ,  Seiichi Takahashi ,  Noritoshi Utsuno ,  Hideki Umehara ,  Fujio Hayashi ,  Shigeo Kiba ,  Satoru Suda

IPC分类号： G11B5/712

CPC分类号： G11B5/712 ,  Y10T428/2991

摘要： Ferromagnetic metal particles the surface layer of which comprises laminatedly covered films of a ferrite compound having a spinel structure of at least one metal selected from cobalt, zinc, manganese, aluminum, chromium, nickel and copper and iron and a preparation process thereof.The particles can be used as a high density magnetic recording medium.

公开(公告)号：US20130288120A1

公开(公告)日：2013-10-31

申请号：US13880509

申请日：2012-07-06

申请人： Kenji Iida ,  Yusuke Tomita ,  Kiyomi Imagawa ,  Shigeo Kiba

发明人： Kenji Iida ,  Yusuke Tomita ,  Kiyomi Imagawa ,  Shigeo Kiba

IPC分类号： C09J179/08 ,  H01M4/62 ,  C09J7/02

CPC分类号： H01M4/622 ,  A61K6/0017 ,  C08G73/1042 ,  C08G73/105 ,  C08G73/1067 ,  C08G73/1071 ,  C08G73/16 ,  C08L79/08 ,  C09J7/22 ,  C09J7/35 ,  C09J179/08 ,  H01G9/2077 ,  H01L23/293 ,  H01L23/295 ,  H01L31/0481 ,  H01L51/448 ,  H01L2224/16225 ,  H01L2224/32225 ,  H01L2224/48091 ,  H01L2224/48227 ,  H01L2224/73204 ,  H01L2924/15311 ,  H05K1/0346 ,  H05K2201/0154 ,  Y02E10/50 ,  Y10T428/2804 ,  Y10T428/2896 ,  A61K6/0023 ,  C08L33/08 ,  A61K6/0026 ,  H01L2924/00014 ,  H01L2924/00

摘要： To provide a resin composition that contains a solvent-soluble polyimide and can provide a film exhibiting high viscoelasticity and flexibility at high temperatures. To attain this, a polyimide resin composition is provided that includes a polyimide having a polycondensation unit of a tetracarboxylic acid dianhydride and a diamine, wherein the tetracarboxylic acid dianhydride includes an (α1) tetracarboxylic acid dianhydride represented by general formula (1), or the diamine includes an (β1) aromatic diamine represented by general formula (2), the diamine includes an (β2) aliphatic diamine represented by general formula (3) or (4), a total amour of the (α1) tetracarboxylic acid dianhydride and the (β1) aromatic diamine is 5 to 49 mol % with respect to a total amount of the tetracarboxylic acid dianhydride and the diamine, and an amine equivalent of the polyimide is 4,000 to 20,000.

摘要翻译： 提供含有溶剂可溶性聚酰亚胺的树脂组合物，能够提供在高温下表现出高粘弹性和柔软性的膜。 为了实现这一点，提供了一种聚酰亚胺树脂组合物，其包括具有四羧酸二酐的缩聚单元和二胺的聚酰亚胺，其中四羧酸二酐包括由通式（1）表示的（α1）四羧酸二酐，或 二胺包括由通式（2）表示的（β1）芳族二胺，二胺包括由通式（3）或（4）表示的（β2）脂族二胺，（α1）四羧酸二酐和 （β1）芳香族二胺相对于四羧酸二酐和二胺的总量为5〜49摩尔％，聚酰亚胺的胺当量为4,000〜20,000。

公开(公告)号：US5406124A

公开(公告)日：1995-04-11

申请号：US158417

申请日：1993-11-29

申请人： Moritsugu Morita ,  Kimiteru Tagawa ,  Kenji Abe ,  Naoshi Mineta ,  Takayuki Kubo ,  Shigeo Kiba ,  Etsuo Ohkawado ,  Kenji Tanabe

发明人： Moritsugu Morita ,  Kimiteru Tagawa ,  Kenji Abe ,  Naoshi Mineta ,  Takayuki Kubo ,  Shigeo Kiba ,  Etsuo Ohkawado ,  Kenji Tanabe

IPC分类号： C08G73/10 ,  C09J179/08 ,  H01B3/30 ,  H01L23/48 ,  H01L29/44 ,  H01L29/52 ,  H01L29/60

CPC分类号： C09J179/08 ,  C08G73/1071 ,  H01B3/306 ,  E02B2017/0047 ,  H01L2224/45144 ,  H01L2224/48091 ,  H01L2224/48247 ,  H01L2224/4826 ,  H01L2224/73215 ,  H01L2224/73265 ,  H01L2924/01014 ,  H01L2924/01019 ,  H01L2924/01039 ,  H01L2924/01079 ,  H01L2924/09701 ,  H01L2924/10253 ,  H01L2924/14 ,  H01L2924/181 ,  Y10T428/31681 ,  Y10T428/31721

摘要： An insulating adhesive tape which comprises a base supporting film and an adhesive layer formed on at least one surface thereof, said adhesive layer being formed of a thermoplastic polymer comprising a thermoplastic polyimide, wherein said thermoplastic polymer has a glass transition temperature ranging from 180.degree. C. to 280.degree. C. and an elastic modulus ranging from 10.sup.10 dyne/cm.sup.2 to 10.sup.11 dyne/cm.sup.2 at 25.degree. C., said modulus including a value ranging from 10.sup.2 dyne/cm.sup.2 to 10.sup.9 dyne/cm.sup.2 at a temperature between 250.degree. C. and 300.degree. C.

摘要翻译： 一种绝缘胶带，其包括基底支撑膜和在其至少一个表面上形成的粘合剂层，所述粘合剂层由包含热塑性聚酰亚胺的热塑性聚合物形成，其中所述热塑性聚合物的玻璃化转变温度为180℃ 在25℃下的弹性模量范围为1010达因/厘米2至1011达因/厘米2，所述模量包括在102达因/厘米2至109达因/厘米2的范围内的值，温度为250℃ 和300℃