公开(公告)号：US4725484A

公开(公告)日：1988-02-16

申请号：US864299

申请日：1986-05-16

申请人： Kiyoshi Kumagawa ,  Kenji Kuniyasu ,  Toshiyuki Nishino ,  Yuji Matsui

发明人： Kiyoshi Kumagawa ,  Kenji Kuniyasu ,  Toshiyuki Nishino ,  Yuji Matsui

IPC分类号： C08J5/18 ,  B32B27/28 ,  B32B27/34 ,  C08G69/26

CPC分类号： C08J5/18 ,  C08J2379/08 ,  Y10S428/901 ,  Y10T428/31721

摘要： A dimensionally stable polyimide film and processes for the preparation thereof. The polyimide film is composed of an aromatic polyimide obtained from a solution of a polymer formed by polymerization of a biphenyl-tetracarboxylic acid and a phenylene diamine, wherein the average linear expansion coefficient of the polyimide film in the temperature range of from 50.degree. C. to 300.degree. C. is 0.1.times.10.sup.-5 to 2.5.times.10.sup.-5 cm/cm..degree.C., the ratio of the linear expansion coefficient in the machine direction of the film to the linear expansion coefficient in the transverse direction of the film is in the range of from 1/5 to 4, and the thermal dimension stability expressed by the ratio of the change of the size of the film at normal temperature after the heat treatment where the temperature is elevated to 400.degree. C. from normal temperature and the film is maintained at 400.degree. C. for 2 hours is less than 0.3%.

摘要翻译： 一种尺寸稳定的聚酰亚胺薄膜及其制备方法。 聚酰亚胺膜由通过联苯基 - 四羧酸和苯二胺的聚合形成的聚合物的溶液得到的芳香族聚酰亚胺构成，聚酰亚胺膜的平均线膨胀系数为50℃ 至300℃，为0.1×10 -5至2.5×10 -5 cm / cm。 ℃时，膜的纵向上的线膨胀系数与膜的横向的线膨胀系数之比在1/5〜4的范围内，由 在从常温升温至400℃的热处理后的常温下的膜尺寸变化率与膜在400℃保持2小时的比例小于0.3％。

公开(公告)号：US06582650B1

公开(公告)日：2003-06-24

申请号：US09889794

申请日：2001-07-20

申请人： Kiyoshi Kumagawa ,  Masaki Shibuya ,  Michiyuki Suzuki ,  Hiroyuki Yamaoka

发明人： Kiyoshi Kumagawa ,  Masaki Shibuya ,  Michiyuki Suzuki ,  Hiroyuki Yamaoka

IPC分类号： D01D500

CPC分类号： C04B35/6325 ,  C04B35/62281 ,  C04B35/62675 ,  C04B35/6268 ,  C04B2235/3205 ,  C04B2235/3206 ,  C04B2235/3208 ,  C04B2235/3213 ,  C04B2235/3215 ,  C04B2235/3217 ,  C04B2235/3224 ,  C04B2235/3225 ,  C04B2235/3227 ,  C04B2235/3229 ,  C04B2235/3239 ,  C04B2235/3244 ,  C04B2235/3248 ,  C04B2235/3284 ,  C04B2235/3409 ,  C04B2235/3418 ,  C04B2235/3895 ,  C04B2235/441 ,  C04B2235/483 ,  C04B2235/75 ,  C04B2235/80 ,  C04B2235/96 ,  C04B2235/9684 ,  C08K3/22 ,  C08K7/08 ,  D01F9/08 ,  C08L83/04

摘要： An oxide-containing organosilicon polymer containing 1 to 45% by weight of metal oxide particles, an oxide-containing silicon-carbide-based inorganic fiber obtained by using the above organosilicon polymer as a raw material and having excellent oxidation resistance, in particular excellent oxidation resistance in a high temperature oxidizing atmosphere containing moisture, a crystalline silicon-carbide-based inorganic fiber having a calcined structure of SiC and production processes of these.

摘要翻译： 含有1〜45重量％的金属氧化物粒子的含氧化物的有机硅聚合物，通过使用上述有机硅聚合物作为原料而获得的具有优异抗氧化性的氧化物的碳化硅系无机纤维，特别优异的氧化 含有水分的高温氧化气氛中的电阻，SiC煅烧结构的结晶碳化硅系无机纤维及其制造方法。