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    Wholly aromatic polyamide fiber non-woven sheet and processes for producing the same
    1.
    发明授权
    Wholly aromatic polyamide fiber non-woven sheet and processes for producing the same 失效
    全芳香族聚酰胺纤维无纺布片及其制造方法

    公开(公告)号：US4482603A

    公开(公告)日：1984-11-13

    申请号：US485634

    申请日：1983-04-18

    申请人： Tsugushi Yoshida ,  Hideharu Sasaki ,  Toru Sawaki ,  Keizo Shimada

    发明人： Tsugushi Yoshida ,  Hideharu Sasaki ,  Toru Sawaki ,  Keizo Shimada

    IPC分类号： D04H1/4342 ,  D04H1/552 ,  B32B27/00 ,  D02G3/00

    CPC分类号： D04H1/54 ,  Y10T428/249978 ,  Y10T428/2973 ,  Y10T442/635 ,  Y10T442/688

    摘要： A wholly aromatic polyamide fiber non-woven sheet having satisfactory density, impregnating property, heat resistance, and surface evenness, comprises mutually, randomly entangled fibers consisting essentially of a wholly aromatic polyamide having 85 molar % or more of at least one type of recurring units selected from those of the formulae (I) and (II): ##STR1## The non-woven sheet is characterized in that the wholly aromatic polyamide fibers have portions thereof having a flattened cross-sectional profile; the aromatic polyamide fibers are fuse-bonded to each other at least at portions thereof intersecting each other; and the sheet includes pores connected to each other, and having a size at the peak of pore size distribution, of 13 microns or less determined by means of a mercury porosimeter, and no voids isolated from each other, and has a porosity of from 5% to 40% and an air permeability rate of from 0.1 to 10,000 sec/100 ml.

    摘要翻译： 具有令人满意的密度，浸渍性，耐热性和表面均匀性的全芳族聚酰胺纤维无纺布片包括相互无规缠结的纤维，主要由具有85摩尔％以上的至少一种类型的重复单元的全芳香族聚酰胺 选自式（I）和（II）的那些：无纺布片的特征在于，全芳族聚酰胺纤维的部分具有扁平的横截面 简介 芳族聚酰胺纤维至少在彼此相交的部分彼此熔合结合; 并且片材包括彼此连接的孔，并且具有通过水银孔隙度计确定的13微米或更小的孔径分布峰值的尺寸，并且没有彼此分离的空隙，并且具有5的孔隙率 ％至40％，透气率为0.1至10,000秒/ 100ml。

    Wholly aromatic halogenated polyamide fiber and film
    2.
    发明授权
    Wholly aromatic halogenated polyamide fiber and film 失效
    全芳香卤化聚酰胺纤维和薄膜

    公开(公告)号：US4507467A

    公开(公告)日：1985-03-26

    申请号：US527377

    申请日：1983-08-29

    申请人： Keizo Shimada ,  Hideharu Sasaki ,  Hiroshi Mera ,  Toru Sawaki ,  Akihiro Aoki

    发明人： Keizo Shimada ,  Hideharu Sasaki ,  Hiroshi Mera ,  Toru Sawaki ,  Akihiro Aoki

    IPC分类号： C08G69/00 ,  C08G69/32 ,  C08J5/18 ,  D01F6/80

    CPC分类号： C08J5/18 ,  C08G69/32 ,  D01F6/805 ,  C08J2377/10

    摘要： High modulus shaped articles such as fibers and films, composed of a wholly aromatic copolyamide, are provided. The wholly aromatic copolyamide is comprised of recurring units of the formulae:--NH--AR.sub.1 --NH--CO--Ar.sub.2 --CO-- (A)and--NH--Ar.sub.3 --CO-- (B)wherein Ar.sub.1, Ar.sub.2 and Ar.sub.3 independently stand for divalent groups selected from ##STR1## in which X's independently stand for a group selected from halogeno, alkyl, aralkyl, aromatic, alkoxy, acetyl and cyano, n is 1 to 3 and Y is selected from ##STR2## in which R' stands for an 1-5C alkyl group, and the copolymerization ratio expressed by the molar ratio of the total of Ar.sub.1, Ar.sub.2 and Ar.sub.3 fails within the square hatched region in a triangular coordinate of FIG. 1, and said copolyamide has an intrinsic viscosity of at least 1.5. The shaped articles are prepared by a process wherein a solution comprised of the above-defined wholly aromatic copolyamide, a halide of a metal of Group I or II of the Periodic Table and an amide type organic solvent is subjected to wet or dry shaping; and then, the shaped article is stretched at a stretch ratio of at least 1.5 at an elevated temperature.

    摘要翻译： 提供了由全芳族共聚酰胺组成的高模量成形制品如纤维和薄膜。 全芳香族共聚酰胺由下式的重复单元组成：-NH-AR1-NH-CO-Ar2-CO-（A）和-NH-Ar3-CO-（B）其中Ar1，Ar2和Ar3独立地表示二价 选自（a）（b）（c），其中X独立代表选自卤代，烷基，芳烷基，芳族，烷氧基，乙酰基和氰基的基团，n为 1〜3，Y选自其中R'表示1-5C烷基的“IMAGE”，由Ar1，Ar2和Ar3的总量的摩尔比表示的共聚比在a 图3的三角坐标。 1，所述共聚酰胺的特性粘度至少为1.5。 成型制品通过以下方法制备，其中将由上述定义的全芳族共聚酰胺，元素周期表第I族或第II族金属的卤化物和酰胺型有机溶剂组成的溶液进行湿法或干法成型; 然后，成形制品在升高的温度下以至少1.5的拉伸比拉伸。

    Process for producing a shaped silicon carbide-based ceramic article
    3.
    发明授权
    Process for producing a shaped silicon carbide-based ceramic article 失效
    用于制造成形碳化硅基陶瓷制品的方法

    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.

    Shaped silion carbide-eased ceramic article
    4.
    发明授权
    Shaped silion carbide-eased ceramic article 失效
    形状的碳化硅硬化陶瓷制品

    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。

    Aromatic polyamide paper-like sheet and processes for producing the same
    6.
    发明授权
    Aromatic polyamide paper-like sheet and processes for producing the same 失效
    芳香族聚酰胺纸状片材及其制造方法

    公开(公告)号：US4498957A

    公开(公告)日：1985-02-12

    申请号：US532304

    申请日：1983-09-15

    申请人： Hideharu Sasaki ,  Keizo Shimada

    发明人： Hideharu Sasaki ,  Keizo Shimada

    IPC分类号： D21H13/26 ,  D21H5/12

    CPC分类号： D21H13/26 ,  Y10T428/2913 ,  Y10T428/31725

    摘要： An aromatic polyamide paper-like sheet having excellent heat- and chemical- resistances and electric insulating properties, comprises an artificial pulp ingredient comprising a number of amorphous pulp particles consisting of an aromatic polyamide material, and a fiber ingredient consisting of a number of short fibers bonded to each other with the amorphous pulp particles, the ratio in weight of the artificial pulp ingredient to the fiber ingredient being in a range of from 1:9 to 9:1 and the aromatic polyamide molecules contained at least in the amorphous pulp particles being cross-linked with a cross-linking agent.

    摘要翻译： 具有优异的耐热和耐化学性和电绝缘性的芳香族聚酰胺纸状片材包括人造纸浆成分，其包含由芳族聚酰胺材料组成的许多非晶纸浆颗粒和由许多短纤维组成的纤维成分 用无定形纸浆颗粒彼此粘合，人造纸浆成分与纤维成分的重量比在1:9至9:1的范围内，并且至少在非晶纸浆颗粒中含有的芳族聚酰胺分子为 与交联剂交联。