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11. 发明授权

US6040050A Polybenzazole fiber having high tensile modulus and process of manufacture thereof 失效
标题翻译：具有高拉伸模量的聚吲唑纤维及其制造方法
公开(公告)号：US6040050A
公开(公告)日：2000-03-21
申请号：US097997
申请日：1998-06-16
申请人： Tooru Kitagawa , Michio Ishitobi
发明人： Tooru Kitagawa , Michio Ishitobi
IPC分类号： D01F6/74 , B02G3/00
CPC分类号： D01F6/74 , Y10T428/2913 , Y10T428/2967
摘要： A polybenzazole fiber obtained through heat treatment, which has a high tensile modulus of not less than 300 GPa and a tensile strength of not less than 5.0 GPa, said fiber being characterized by an X-ray analysis by a fine structure thereof of at least one of the following (1) and (2):(1) a crystal orientation parameter of not more than 0.009 as determined by a wide-angle X-ray diffraction method,(2) absence of an equatorial streak, a two-point pattern or a four-point pattern in a small-angle X-ray scattering; and a process of manufacturing a polybenzazole fiber which comprises extruding a dope comprising a polybenzazole polymer and a nonoxidative acid capable of dissolving said polymer, from a spinneret into a non coagulative gas to give spun filaments, introducing said filaments into a coagulation bath to extract the acid contained in said filaments, neutralizing the filaments, washing the filaments, adjusting a water content of the filaments to not more than 100%, applying a pretension to the filaments at an optional stage after introduction into a coagulation bath and before heat treatment, and heat treating the filaments at a temperature of not less than 500.degree. C. under a certain tension to give the fiber. The polybenzazole fiber of the present invention has a specific fine structure of fiber, as mentioned above, and also has a high tensile strength and a high tensile modulus heretofore unavailable. The inventive polybenzazole fiber can be manufactured at an industrial scale with ease. Thus, the inventive fiber is tremendously effective in expanding the field of possible utilization as an industrial material with high practical advantages.
摘要翻译：通过热处理获得的聚吲哚纤维，其具有不低于300GPa的高拉伸模量和不小于5.0GPa的拉伸强度，所述纤维的特征在于通过其至少一种的精细结构的X射线分析（1）和（2）：（1）通过广角X射线衍射法测定的晶体取向参数不大于0.009，（2）不存在赤道条纹，小角度X射线散射中的两点图案或四点图案; 以及制造聚吲哚纤维的方法，其包括将包含聚吲哚聚合物和能够溶解所述聚合物的非氧化酸的涂料从喷丝头挤出到非凝固性气体中以产生纺丝丝，将所述长丝引入凝固浴中以提取所述长丝中含有的酸，中和长丝，洗涤长丝，将长丝的水分调节至不超过100％，在引入凝固浴中并在热处理之前的任选阶段向长丝施加预张力，以及在一定张力下在不低于500℃的温度下热处理长丝，得到纤维。本发明的聚吲哚纤维如上所述具有特定的纤维结构，并且还具有高拉伸强度和高拉伸模量。本发明的聚吲哚纤维可以容易地以工业规模制造。因此，本发明的纤维在扩大作为具有高实用性的工业材料的可能利用领域方面是非常有效的。

12. 发明申请

US20070148452A1 High strength polyethylene fiber 有权
标题翻译：高强度聚乙烯纤维
公开(公告)号：US20070148452A1
公开(公告)日：2007-06-28
申请号：US10582624
申请日：2004-03-12
申请人： Godo Sakamoto , Tooru Kitagawa , Yasuo Ohta , Yasunori Fukushima , Hiroki Murase
发明人： Godo Sakamoto , Tooru Kitagawa , Yasuo Ohta , Yasunori Fukushima , Hiroki Murase
IPC分类号： D02G3/00
CPC分类号： D01F6/04 , Y10T428/12625 , Y10T428/2933 , Y10T428/2967
摘要： PURPOSE: To provide a novel high strength polyethylene multifilament which consists of a plurality of filaments having high strengths and uniform internal structures, and showing a narrow variation in the strengths of the monofilaments, and which has been difficult to be provided by the conventional gel spinning method. SOLUTION: A high strength polyethylene multifilament consisting of a plurality of filaments which are characterized in that the crystal size of monoclinic crystal is 9 nm or less; the stress Raman shift factor is −5.0 cm−1/(cN/dTex) or more; the average strength is 20 CN/dTex or higher; the knot strength retention of each monofilament is 40% or higher; CV indicating a variation in the strengths of the monofilaments is 25% or lower; the elongation at break is from 2.5% inclusive to 6.0% inclusive; the fineness of each filament is 10 dTex or less; and the melting point of the filaments is 145° C. or higher.
摘要翻译：目的：提供一种新颖的高强度聚乙烯复丝，其由多根长丝组成，具有高强度和均匀的内部结构，并且显示出单丝强度变化很小，并且难以通过常规凝胶纺丝方法。解决方案：由多根长丝组成的高强度聚乙烯复丝，其特征在于单斜晶体的晶体尺寸为9nm以下; 应力拉曼位移系数为-5.0cm -1 /（cN / dTex）以上; 平均强度为20 CN / dTex以上; 每根单丝的结强度保持率为40％以上; 表示单丝强度变化的CV为25％以下; 断裂伸长率为2.5％〜6.0％; 每根细丝的细度为10 dTex以下; 长丝的熔点为145℃以上。

13. 发明申请

US20050238875A1 High strength polyethylene fiber 失效
公开(公告)号：US20050238875A1
公开(公告)日：2005-10-27
申请号：US11106659
申请日：2005-04-15
申请人： Godo Sakamoto , Tooru Kitagawa , Syoji Oda , Yasuo Ohta
发明人： Godo Sakamoto , Tooru Kitagawa , Syoji Oda , Yasuo Ohta
IPC分类号： D01F6/04 , D01D5/12
CPC分类号： D01F6/04 , D07B1/025 , D07B2205/2014 , Y10T428/2913 , Y10T428/2967 , D07B2801/10
摘要： A high strength polyethylene filament, wherein said filament has a fineness of 1.5 dtex or less as a monofilament, a tensile strength of 15 cN/dtex or more and a tensile elastic modulus of 300 cN/dtex or more, and, the rate of dispersion-defective fibers cut from the filament is 2% or less, is disclosed, and a high strength polyethylene filament, wherein said filament has a tensile strength of 15 cN/dtex or more and a tensile elastic modulus of 300 cN/dtex or more, and, a long period structure of 100 Å or less is observed in an X-ray small angle scattering pattern is disclosed.

14. 发明授权

US5993963A Polybenzazole fiber and method for production thereof 失效
标题翻译：聚吲唑纤维及其生产方法
公开(公告)号：US5993963A
公开(公告)日：1999-11-30
申请号：US940780
申请日：1997-09-30
申请人： Yoshihiko Teramoto , Tooru Kitagawa , Yoshikazu Tanaka , Michio Ishitobi
发明人： Yoshihiko Teramoto , Tooru Kitagawa , Yoshikazu Tanaka , Michio Ishitobi
IPC分类号： D01D5/00 , D01F6/74 , D02G3/00
CPC分类号： D01F6/74 , Y10T428/2913 , Y10T428/2967
摘要： A polybenzazole fiber characterized by having an elastic modulus of not less than 1350 g/d and requiring not longer than 10 minutes to reduce its water content from 2.0% to 1.5%, when determined using a thermogravimetric analyzer at 110.degree. C. after moisture absorption of not less than 2.0% of a fiber, and a method for manufacturing such a polybenzazole fiber, comprising extruding a spinning dope comprising polybenzazole and a polyphosphoric acid from a spinneret to give a dope filament, and cooling the dope filament to not more than 50.degree. C., followed by coagulation and washing. According to the method of the present invention, a polybenzazole fiber showing less decrease in strength by rapid heating can be provided.
摘要翻译：一种聚吲哚纤维，其特征在于当吸湿后在110℃下使用热重分析仪测定时，其弹性模量不小于1350g / d，并且需要不超过10分钟以将其含水量从2.0％降低至1.5％不小于2.0％的纤维，以及制造这种聚吲哚纤维的方法，包括从喷丝头挤出包含聚吲哚和多磷酸的纺丝原液，得到涂料丝，并将所述涂料丝冷却至不超过50 然后凝固和洗涤。根据本发明的方法，可以提供通过快速加热显示较少的强度降低的聚吲唑纤维。

15. 发明授权

US5772942A Processes for producing polybenzazole fibers 失效
标题翻译：生产聚吲哚纤维的方法
公开(公告)号：US5772942A
公开(公告)日：1998-06-30
申请号：US707546
申请日：1996-09-05
申请人： Yoshihiko Teramoto , Tooru Kitagawa , Michio Ishitobi
发明人： Yoshihiko Teramoto , Tooru Kitagawa , Michio Ishitobi
IPC分类号： D01F6/74 , D01D5/06 , D01D10/02 , D01D10/06 , D01F6/26
CPC分类号： D01F6/74
摘要： The present invention provides processes for producing polybenzazole fibers where a spinning dope containing a polybenzazole polymer in an acid solvent is extruded through a spinning nozzle, followed by coagulation in a coagulating medium and washing with a fluid capable of dissolving the acid solvent; thereafter, in one process, the fiber obtained by the coagulation under specific conditions and the subsequent washing is dried in a heating zone with at least 80% part based on the total length thereof being set at a temperature of 240.degree. C. or higher, and in the other process, the fiber obtained by the coagulation under the conventional conditions and the subsequent washing is neutralized with a basic solution, followed by washing with a fluid capable of dissolving the basic solution, and then dried at a specific temperature set depending upon the residual moisture content in the fiber. The present invention further provides a polybenzazole intermediate predried fiber having a residual moisture content of about 25% and exhibiting a single peak for liquid freezing in the fiber over a temperature range of from 20.degree. to -70.degree. C. when measured by differential scanning calorimetry (DSC).
摘要翻译：本发明提供生产聚吲哚纤维的方法，其中在酸性溶剂中含有聚吲哚聚合物的纺丝原液通过纺丝喷嘴挤出，然后在凝固介质中凝结，并用能溶解酸溶剂的流体洗涤; 此后，在一个方法中，通过在特定条件下凝结获得的纤维和随后的洗涤在加热区中干燥，至少80％部分基于其总长度设定在240℃或更高的温度，在另一方法中，将通过常规条件下的凝结获得的纤维和随后的洗涤用碱性溶液中和，然后用能够溶解碱性溶液的流体洗涤，然后在根据纤维中残留的水分含量。本发明还提供了当通过差示扫描量热法测量时，在20至-70℃的温度范围内，具有约25％的残余水分含量的聚吲唑中间体预干燥纤维，并且在纤维中显示出液体冷冻的单峰（DSC）。

16. 发明授权

US5429787A Method for rapid drying of a polybenzazole fiber 失效
标题翻译：快速干燥聚吲哚纤维的方法
公开(公告)号：US5429787A
公开(公告)日：1995-07-04
申请号：US142526
申请日：1993-11-02
申请人： Jang-hi Im , Chieh-Chun Chau , Hiroki Murase , Tooru Kitagawa , Takaharu Ichiryu
发明人： Jang-hi Im , Chieh-Chun Chau , Hiroki Murase , Tooru Kitagawa , Takaharu Ichiryu
IPC分类号： D01D10/06 , D01F6/74 , B29C71/02
CPC分类号： D01D10/06 , D01F6/74
摘要： Polybenzazole fibers can be rapidly dried without undue fiber damage by exposing them to two or more set point temperatures with the temperatures being selected relative to the residual moisture content of the fiber. The residence time required for the fiber at each progressively higher temperature can be reduced if the fiber is always in full contact with the set point temperature of the drying equipment.
摘要翻译：通过将它们暴露于两个或多个设定点温度，相对于纤维的残留水分含量选择温度，可以快速干燥聚吲唑纤维，而不会造成不适当的纤维损伤。如果纤维始终与干燥设备的设定点温度完全接触，纤维在逐渐升高的温度下所需的停留时间可以降低。

17. 发明授权

US09394638B2 Polyimide nonwoven fabric and process for production thereof 有权
标题翻译：聚酰亚胺无纺布及其制造方法
公开(公告)号：US09394638B2
公开(公告)日：2016-07-19
申请号：US12305722
申请日：2007-06-19
申请人： Masahiko Nakamori , Satoshi Maeda , Tooru Kitagawa , Hisato Kobayashi , Yasuo Ohta
发明人： Masahiko Nakamori , Satoshi Maeda , Tooru Kitagawa , Hisato Kobayashi , Yasuo Ohta
IPC分类号： D04H1/72 , D04H3/16 , D01D5/00 , D01F6/74 , D04H1/42
CPC分类号： D04H3/16 , D01D5/0038 , D01F6/74 , D04H1/42 , D04H1/4334 , D04H1/4382 , D04H1/72 , Y10T442/626
摘要： A non-woven fabric which is excellent in thermal resistance, mechanical strength, and thermal dimensional stability for applications exposed to high temperature circumstance and has an extremely large surface area and exhibit an excellent filter performance is obtained. The non-woven fabric is composed of polyimide fibers which are obtained by polycondensation of at least an aromatic tetracarboxylic acid and an aromatic diamine having a benzoxazole structure and have a fiber diameter in the range of 0.001 μm to 1 μm. The non-woven fabric is obtained by the steps of preparing a polyamic acid by polycondensation of an aromatic tetracarboxylic acid and an aromatic diamine having a benzoxazole structure, and electro-spinning the polyamic acid to form a polyimide precursor non-woven fabric; and imidizing a polyimide precursor fiber bundle.
摘要翻译：获得了耐高温环境下使用的耐热性，机械强度和热尺寸稳定性优异，表面积极高，过滤性能优异的无纺布。无纺布由聚酰亚胺纤维构成，该聚酰亚胺纤维通过至少一种芳香族四羧酸和具有苯并恶唑结构的芳香族二胺的缩聚得到，纤维直径在0.001μm〜1μm的范围内。通过以下步骤获得无纺织物：通过芳族四羧酸和具有苯并恶唑结构的芳族二胺的缩聚制备聚酰胺酸，并将聚酰胺酸电纺丝以形成聚酰亚胺前体无纺织物; 并酰亚胺化聚酰亚胺前体纤维束。

18. 发明申请

US20150136692A1 REVERSE OSMOSIS MEMBRANE FOR WASTEWATER TREATMENT 有权
标题翻译：反渗透膜用于废水处理
公开(公告)号：US20150136692A1
公开(公告)日：2015-05-21
申请号：US14117402
申请日：2012-06-14
申请人： Masao Higashi , Junsuke Morita , Tooru Kitagawa
发明人： Masao Higashi , Junsuke Morita , Tooru Kitagawa
IPC分类号： B01D71/68
CPC分类号： B01D71/68 , B01D61/025 , B01D69/02 , B01D69/141 , C02F1/441
摘要： To provide a reverse osmosis membrane where both salt rejection rate and water permeability required for wastewater treatment are achieved in a high level in spite of using the materials having excellent resistance to chemicals (resistance to alkali and to chlorine).A reverse osmosis membrane for wastewater treatment comprising a sulfonated poly(arylene ether sulfone) polymer containing a constituting component represented by the following formula [I], characterized in that, in a proton nuclear magnetic resonance spectrum where water molecules in the membrane are measured using the reverse osmosis membrane in a water-containing state, the relation between the chemical shift A (ppm) of spectral peak top derived from bound water and the chemical shift B (ppm) of spectral peak top derived from bulk water satisfies (B−0.36)≦A
摘要翻译：为了提供反渗透膜，尽管使用具有优异的抗化学性（耐碱性和耐氯性）的材料，但废水处理所需的盐渗透率和水渗透性均达到高水平。一种用于废水处理的反渗透膜，其包含含有由下式[I]表示的构成成分的磺化聚（亚芳基醚砜）聚合物，其特征在于，在质子核磁共振谱中，使用含水状态的反渗透膜，从结合水衍生的光谱峰顶的化学位移A（ppm）与衍生自散装水的光谱峰顶的化学位移B（ppm）之间的关系满足（B-0.36））＆nlE; A <（B-0.30）：其中X是H或一价阳离子种类，n是10-50的整数。

19. 发明授权

US07868126B2 Process for producing polyester, polyester produced using said process, and polyester molded product 有权
标题翻译：使用该方法制造聚酯，聚酯的方法和聚酯模制品
公开(公告)号：US07868126B2
公开(公告)日：2011-01-11
申请号：US11795556
申请日：2005-06-24
申请人： Katsuhiko Kageyama , Tooru Kitagawa , Kenichi Funaki , Masaki Fuchikami , Kazuo Katayose , Takahiro Nakajima , Toshiyuki Tsuchiya , Satoru Nakagawa , Fumikazu Yoshida , Haruhiko Kohyama , Naoki Watanabe
发明人： Katsuhiko Kageyama , Tooru Kitagawa , Kenichi Funaki , Masaki Fuchikami , Kazuo Katayose , Takahiro Nakajima , Toshiyuki Tsuchiya , Satoru Nakagawa , Fumikazu Yoshida , Haruhiko Kohyama , Naoki Watanabe
IPC分类号： C08G63/00
CPC分类号： C08G63/84 , C08J5/18 , C08J2367/02 , D01F6/62 , Y10T428/13 , Y10T428/1352 , Y10T428/162 , Y10T428/249921
摘要： This invention provides a polyester and a polyester molded product, which, while maintaining color tone, transparency, and thermal stability, can realize a high polycondensation rate, are less likely to cause the production of polycondensation catalyst-derived undesired materials, and can simultaneously meet both quality and cost effectiveness requirements, which can exhibit the characteristic features, for example, in the fields of ultrafine fibers, high transparent films for optical use, or ultrahigh transparent molded products. These advantages can be realized by using, in the production of a polyester in the presence of an aluminum compound-containing polyester polycondensation catalyst, an aluminum compound having an absorbance of not more than 0.0132 as measured in the form of an aqueous aluminum compound solution, prepared by dissolving the aluminum compound in pure water to give a concentration of 2.7 g/liter in terms of the amount of aluminum element, under conditions of cell length 1 cm and wavelength 680 nm.
摘要翻译：本发明提供一种聚酯和聚酯成型体，其在保持色调，透明性和热稳定性的同时，可以实现高缩聚率，不太可能导致产生缩聚催化剂衍生的不需要的材料，并且可以同时满足质量和成本效益要求，其可以表现出特征，例如在超细纤维，用于光学用途的高透明膜或超高透明模制品的领域。这些优点可以通过在含铝化合物的聚酯缩聚催化剂的存在下制造聚酯，通过以铝化合物水溶液的形式测定的吸光度不大于0.0132的铝化合物来实现，通过将铝化合物溶解在纯水中，在细胞长度为1cm和波长680nm的条件下，以铝元素的量计，浓度为2.7g /升。

20. 发明申请

US20100233451A1 POLYBENZAZOLE FIBER AND PYRIDOBISIMIDAZOLE FIBER 失效
标题翻译：聚苯扎唑纤维和吡唑并咪唑纤维
公开(公告)号：US20100233451A1
公开(公告)日：2010-09-16
申请号：US12438230
申请日：2007-08-22
申请人： Tooru Kitagawa , Kohei Kiriyama , Seiji Watanuki , Yoshihiko Teramoto , Yusuke Shimizu
发明人： Tooru Kitagawa , Kohei Kiriyama , Seiji Watanuki , Yoshihiko Teramoto , Yusuke Shimizu
IPC分类号： C08G73/06 , C08G73/10 , B32B7/02
CPC分类号： D01F6/74 , D01D5/06
摘要： To provide fibers which retain the excellent heat resistance and flame retardancy inherent in polybenzazole fibers and pyridobisimidazole fibers, have improved post-processability and neither necessitate considerable change in production process conditions nor require a high-temperature and long-time heating treatment. With respect to the polybenzazole fiber and pyridobisimidazole fiber, in an electron diffraction diagram of a surface layer part (from the surface to 1 μm) of the fibers, the fibers containing a crystal present in a state satisfying that S2/S1 is in a prescribed range, wherein S1 is a diffraction peak area derived from a crystal (200) plane and S2 is a diffraction peak area derived from a plurality of other crystal planes along an equatorial direction profile.
摘要翻译：为了提供保持聚吲哚纤维和吡啶并咪唑纤维中固有的优异耐热性和阻燃性的纤维，具有改进的后加工性，并且不需要生产工艺条件的相当大的改变，也不需要高温和长时间的加热处理。关于聚吲哚纤维和吡啶并咪唑纤维，在表面层部分（从表面到1μm）的电子衍射图中，含有以满足S2 / S1的状态存在的晶体的纤维处于规定的范围，其中S1是衍生自晶体（200）面的衍射峰面积，S2是沿着赤道方向轮廓从多个其它晶面衍生的衍射峰面积。

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