公开(公告)号：US5393872A

公开(公告)日：1995-02-28

申请号：US170801

申请日：1993-12-21

申请人： Takanori Shinoki ,  Akio Nakaishi ,  Michio Yamamoto

发明人： Takanori Shinoki ,  Akio Nakaishi ,  Michio Yamamoto

IPC分类号： B32B5/26 ,  C04B30/02 ,  D21H13/26 ,  D21H13/44 ,  H01B3/00 ,  H01B3/04 ,  H01B3/30 ,  C08G73/10 ,  B32B27/28 ,  B32B27/34

CPC分类号： D21H13/44 ,  B32B5/26 ,  C04B30/02 ,  D21H13/26 ,  H01B3/006 ,  H01B3/04 ,  H01B3/305 ,  C04B2111/00612 ,  C04B2111/92 ,  Y10T428/24994 ,  Y10T428/24995 ,  Y10T428/2962 ,  Y10T428/2969 ,  Y10T428/31504 ,  Y10T428/31725

摘要： This invention relates to a sheetlike wholly aromatic polyamide shaped article useful as electrical insulating materials excellent in corona resistance (corona durability) and in surface smoothness. The corona durability of said sheetlike shaped article is increased to 150 minutes or above by adding a nonionic polymer flocculant to an aqueous dispersion comprising 10 to 90% by weight of mica particles, preferably treated with a silane coupling agent and 90 to 10% by weight of a wholly aromatic polyamide stock (fibrids and fibers) in obtaining the sheetlike shaped article from the aqueous dispersion by wet shaping.

摘要翻译： 本发明涉及作为耐电晕性（电晕耐久性）和表面平滑性优异的电绝缘材料的片状全芳族聚酰胺成形体。 通过向含有10〜90重量％的云母粒子的水性分散体中添加非离子聚合物絮凝剂，优选用硅烷偶联剂和90〜10重量％的处理，将所述片状成形体的电晕耐久性提高到150分钟以上 的全芳族聚酰胺原料（纤条体和纤维），通过湿法成型从水性分散体获得片状成形制品。

公开(公告)号：US4897229A

公开(公告)日：1990-01-30

申请号：US254370

申请日：1988-10-05

申请人： Toru Sawaki ,  Akio Nakaishi ,  Keizo Shimada ,  Takashi Watanabe

发明人： Toru Sawaki ,  Akio Nakaishi ,  Keizo Shimada ,  Takashi Watanabe

IPC分类号： C04B35/571 ,  C04B35/622

CPC分类号： C04B35/62227 ,  C04B35/571

摘要： A shaped silicon carbide-based ceramic article having an improved mechanical strength is produced at a high efficiency by a process comprising the step of: forming an organic silicon polymer, for example, polycarbosilastyrene copolymer, into a predetermined shape, for example, a filament or film; doping the shaped polymer with a doping material consisting of at least one type of halogen, for example, bromine or iodine, in an amount of 0.01% to 150% based on the weight of the shaped polymer, to render the shaped polymer infusible; and pyrolyzing the infusible shaped polymer into a shaped SiC-based ceramic article at a temperature of 800.degree. C. to 1400.degree. C. in an inert gas atmosphere, optionally the halogen-doped shaped polymer being treated with a basic material, for example, ammonia, before the pyrolyzing step, to make the filament uniformly infusible.

公开(公告)号：US4872885A

公开(公告)日：1989-10-10

申请号：US171866

申请日：1988-02-23

申请人： Tsuneo Tsubakimoto ,  Hayami Ito ,  Shuhei Tatsumi ,  Yoshihiro Kajibata ,  Shoichi Takao ,  Takakiyo Goto ,  Akio Nakaishi ,  Kenji Rakutani ,  Toshio Tamura ,  Hiroya Kobayashi

发明人： Tsuneo Tsubakimoto ,  Hayami Ito ,  Shuhei Tatsumi ,  Yoshihiro Kajibata ,  Shoichi Takao ,  Takakiyo Goto ,  Akio Nakaishi ,  Kenji Rakutani ,  Toshio Tamura ,  Hiroya Kobayashi

IPC分类号： C10L1/32

CPC分类号： C10L1/326 ,  Y10S516/06

摘要： This invention discloses (1) a dispersant for an aqueous carbonaceous solid slurry, which comprises a water-soluble copolymer having an average molecular weight of 1,000 to 500,000 and obtained by polymerizing (A) 0.1 to 7 mol % of a polyalkylene glycol mono(meth)acrylate type monomer, (B) 5 to 94.9 mol % of a sulfoalkyl (meth)acrylate type monomer, (C) 5 to 94.9 mol % of an unsaturated carboxylic acid type monomer, and (D) 0 to 20 mol % of other monomer (providing that the total amount of the monomers is 100 mol %) and/or a salt of the water-soluble copolymer and (2) an aqueous carbonaceous solid slurry composition, which comprises 100 parts by weight of as carbonaceous solid and 0.01 to 5 parts by weight of the aforementioned dispersant.

公开(公告)号：US5091271A

公开(公告)日：1992-02-25

申请号：US420560

申请日：1989-10-12

申请人： Toru Sawaki ,  Akio Nakaishi ,  Keizo Shimada ,  Takashi Watanabe

发明人： Toru Sawaki ,  Akio Nakaishi ,  Keizo Shimada ,  Takashi Watanabe

IPC分类号： C04B35/571 ,  C04B35/622

CPC分类号： C04B35/62227 ,  C04B35/571 ,  Y10S428/902 ,  Y10T428/2918

摘要： A shaped silicon carbide-based ceramic article having an improved mechanical strength is produced at a high efficiency by a process comprising the step of: forming an organic silicone polymer, for example, polycarbosilastyrene copolymer, into a predetermined shape, for example, a filament or film; doping the shaped polymer with a doping material consisting of at least one type of halogen, for example, bromine or iodine, in an amount of 0.01% to 150% based on the weight of the shaped polymer, to render the shaped polymer infusible; and pyrolyzing the infusible shaped polymer into a shaped SiC-based ceramic article at a temperature of 800.degree. C. to 1400.degree. C. in an inert gas atmosphere, optionally the halogen-doped shaped polymer being treated with a basic material, for example, ammonia, before the pyrolyzing step, to make the filament uniformly infusible.

摘要翻译： 通过包括以下步骤的方法以高效率生产具有改善的机械强度的成形碳化硅基陶瓷制品：将有机硅氧烷聚合物，例如聚碳硅烷基苯乙烯共聚物形成预定形状，例如长丝或 电影; 使用由至少一种类型的卤素（例如溴或碘）组成的掺杂材料，以成形聚合物的重量计为0.01％至150％的量掺杂成型聚合物，以使成形聚合物不熔化; 并在惰性气体气氛中，在800℃至1400℃的温度下将可熔成形聚合物热解成成型的SiC基陶瓷制品，任选地，用碱性材料处理的掺杂卤素的聚合物，例如， 氨，在热解步骤之前，使细丝均匀地不熔融。

公开(公告)号：US5216109A

公开(公告)日：1993-06-01

申请号：US743911

申请日：1991-08-12

申请人： Hiroo Inata ,  Shunichi Matsumura ,  Akio Nakaishi

发明人： Hiroo Inata ,  Shunichi Matsumura ,  Akio Nakaishi

IPC分类号： C08G63/19 ,  C08G63/60

CPC分类号： C08G63/605 ,  C08G63/19

摘要： A crystalline wholly aromatic polyester:(1) which consists essentially ofa polymer unit A of the formula ##STR1## a polymer unit B of the formula ##STR2## a polymer unit C of the formula ##STR3## these polymer units being bonded together to form an ester having a linkage (--COO--),(2) which has a melting point lower than that of the known crystalline wholly aromatic polyester having same composition; a process for the production of a crystalline wholly aromatic polyester, using a phenol or phenol derivative as a reaction medium; a reinforced resin composition comprising the above wholly aromatic polyester; and a shaped or molded article formed from the above resin composition.