公开(公告)号：US06797801B2

公开(公告)日：2004-09-28

申请号：US10257811

申请日：2002-10-17

Applicant: Jiro Sadanobu ,  Rei Nishio ,  Susumu Honda ,  Tsutomu Nakamura

Inventor： Jiro Sadanobu ,  Rei Nishio ,  Susumu Honda ,  Tsutomu Nakamura

IPC: C08G7310

CPC classification number: C08J5/18 ,  B29C41/24 ,  B29C55/00 ,  B29C55/12 ,  B29D7/01 ,  B29K2079/08 ,  C08J2379/08 ,  Y10T428/31678 ,  Y10T428/31681 ,  Y10T428/31721

Abstract: An oriented polyimide film of high strength and a production process therefor. The process basically comprises stretching a gelled film and then imidating the film. The gelled film is formed by introducing a polyamic acid solution into a condensation agent solution. The gelled film is swollen with a solvent at the time of stretching.

Abstract translation: 高强度取向聚酰亚胺薄膜及其制造方法。 该方法基本上包括拉伸凝胶膜然后酰亚胺化膜。 凝胶膜通过将聚酰胺酸溶液引入缩合剂溶液中而形成。 凝胶膜在拉伸时用溶剂溶胀。

公开(公告)号：US06780960B2

公开(公告)日：2004-08-24

申请号：US10200825

申请日：2002-07-22

Applicant: Michael C. Hausladen ,  Jin-O Choi

Inventor： Michael C. Hausladen ,  Jin-O Choi

IPC: C08G7310

CPC classification number: C08G73/106 ,  C08G73/1032

Abstract: A method of making a solution of a polyimide from a diamine monomer and a dianhydride monomer is disclosed. A solution or slurry of one of the monomers in a solvent that boils at a temperature between about 80° C. and about 160° C. is prepared. The solution or slurry is heated to a temperature between about 80° C. and about 160° C. and the other monomer is slowly added to the solution or slurry. Polyamic acid that is formed quickly imidizes to form the polyimide.

Abstract translation: 公开了从二胺单体和二酐单体制备聚酰亚胺溶液的方法。 制备在约80℃至约160℃的温度下沸腾的溶剂中的一种单体的溶液或浆液。 将溶液或浆液加热至约80℃至约160℃的温度，并将其它单体缓慢加入到溶液或浆液中。 形成的聚酰胺酸快速酰亚胺化以形成聚酰亚胺。

公开(公告)号：US06770733B2

公开(公告)日：2004-08-03

申请号：US10336343

申请日：2003-01-03

Applicant: Min Zuo ,  Jenq-Tain Lin

Inventor： Min Zuo ,  Jenq-Tain Lin

IPC: C08G7310

CPC classification number: C08G73/1085 ,  C08G73/1042 ,  C08G73/1082 ,  Y10T428/31678 ,  Y10T428/31681 ,  Y10T428/31721

Abstract: A film-formable polyimide copolymer, which comprises two kinds of tetracarboxylic acid dianhydride consisting of (A) pyromellitic acid dianhydride and (B) 3,3′,4,4′-benzophenonetetracarboxylic acid dianhydride, and (C) 6-amino-2-(p-aminophenyl)benzimidazole has a heat-resistant dimensional stability without any deterioration of mechanical properties inherent in the polyimide resin when used as a film.

Abstract translation: 一种可成膜聚酰亚胺共聚物，其包含由（A）均苯四酸二酐和（B）3,3'，4,4'-二苯甲酮四羧酸二酐组成的两种四羧酸二酐和（C）6-氨基-2 - （对 - 氨基苯基）苯并咪唑具有耐热尺寸稳定性，而在用作膜时聚酰亚胺树脂固有的机械性能没有任何劣化。

公开(公告)号：US06737502B2

公开(公告)日：2004-05-18

申请号：US10162669

申请日：2002-06-06

Applicant: Shean-Jeng Jong

Inventor： Shean-Jeng Jong

IPC: C08G7310

CPC classification number: C08G73/1039

Abstract: A solvent-free, catalyst-free and contamination-free method of synthesis of polyimides is disclosed. The method includes polymerizing a diamine with 2,2-bis(3,4-dicarboxyphenyl)hexafluoropropane dianhydride (6FDA) at a pressure of 0.1-760 mm Hg, preferably a reduced pressure at about 36 mm Hg, and a temperature of 90-400° C., preferably 10-240° C.

Abstract translation: 公开了无溶剂，无催化剂和无污染的聚酰亚胺的合成方法。 该方法包括在0.1-760mm Hg的压力下，优选在约36mm Hg的减压下，将二胺与2,2-双（3,4-二羧基苯基）六氟丙烷二酐（6FDA） 400℃，优选10-240℃

公开(公告)号：US06620503B2

公开(公告)日：2003-09-16

申请号：US10087367

申请日：2002-03-01

Applicant: Jian Qin ,  Yong Li ,  Wendy Lynn Van Dyke ,  Anthony John Wisneski ,  Palani Raj Ramaswami Wallajapet ,  Hannong Rhim

Inventor： Jian Qin ,  Yong Li ,  Wendy Lynn Van Dyke ,  Anthony John Wisneski ,  Palani Raj Ramaswami Wallajapet ,  Hannong Rhim

IPC: C08G7310

CPC classification number: D04H3/16 ,  D01D5/0985 ,  D01D5/14 ,  Y10T428/24612 ,  Y10T428/249921 ,  Y10T428/29 ,  Y10T428/2913 ,  Y10T428/2967 ,  Y10T428/2969 ,  Y10T428/31725 ,  Y10T442/183 ,  Y10T442/184 ,  Y10T442/20 ,  Y10T442/2025 ,  Y10T442/60 ,  Y10T442/607 ,  Y10T442/613 ,  Y10T442/622

Abstract: A nonwoven web and method of preparing a novel nonwoven web of synthetic fiber are disclosed. An aqueous solution amide crosslinked synthetic precursor polymer is extruded under defined conditions through a plurality of die orifices to form a plurality of threadlines. The threadlines are attenuated with a defined primary gaseous source to form fiber under conditions of controlled macro scale turbulence and under conditions sufficient to permit the viscosity of each threadline, as it leaves a die orifice and for a distance of no more than about 8 cm, to increase incrementally with increasing distance from the die, while substantially maintaining uniformity of viscosity in the radial direction, at a rate sufficient to provide fiber having the desired attenuation and mean fiber diameter without significant fiber breakage. The attenuated threadlines are dried with a defined secondary gaseous source. The resulting fibers are deposited randomly on a moving foraminous surface to form a substantially uniform web. The moving foraminous surface is positioned about 10 to about 100 cm from the last gaseous source to contact the threadlines. The fibers have a mean fiber diameter in the range of about 0.1 to 30 Am and are substantially free of shot. The attenuating and drying steps are carried out under conditions of controlled macro scale turbulence.

公开(公告)号：US06596838B1

公开(公告)日：2003-07-22

申请号：US09913802

申请日：2001-08-17

Applicant: Michel Pinery ,  Gérald Pourcelly ,  Régis Mercier

Inventor： Michel Pinery ,  Gérald Pourcelly ,  Régis Mercier

IPC: C08G7310

CPC classification number: B01D61/52 ,  B01D61/44 ,  B01D69/10 ,  B01D71/64 ,  C08G73/10 ,  C08J5/2256 ,  C08J2379/08 ,  C25B13/08

Abstract: The invention relates to a semi-permeable membrane separation process and device in which the said membranes comprise sulphonated polyimides. The present invention also relates to the use of sulphonated polyimide membranes in separation processes and devices using semi-permeable membranes. The said sulphonated polyimide comprises recurrent structures with the formula (In): and recurrent structures with the formula (Im):

Abstract translation: 本发明涉及半透膜分离方法和装置，其中所述膜包含磺化聚酰亚胺。本发明还涉及使用半渗透膜的分离方法和装置中磺化聚酰亚胺膜的用途。 所述磺化聚酰亚胺包括具有式（In）的复发结构：和具有式（Im）的复发结构：

公开(公告)号：US06586561B1

公开(公告)日：2003-07-01

申请号：US09507086

申请日：2000-02-18

Applicant: Morton H. Litt ,  Robert F. Savinell ,  Jesse S. Wainright ,  Yue Zhang

Inventor： Morton H. Litt ,  Robert F. Savinell ,  Jesse S. Wainright ,  Yue Zhang

IPC: C08G7310

CPC classification number: H01M8/1065 ,  B01D71/40 ,  B01D71/64 ,  B01D71/82 ,  C08G73/1042 ,  H01M8/0289 ,  H01M8/1027 ,  H01M8/103 ,  H01M8/1032 ,  H01M2300/0082

Abstract: Sulfonated polyimide polymers incorporating bulky monomers are disclosed. The polymers have a liquid crystalline structure and exhibit high conductivity, high water uptake and water stability over a range of relative humidities and temperatures. The polymers are particularly adapted for use as a polymer electrolyte membrane in fuel cells.

Abstract translation: 公开了掺入大体积单体的磺化聚酰亚胺聚合物。 聚合物具有液晶结构并且在相对湿度和温度范围内表现出高导电性，高吸水性和水稳定性。 聚合物特别适合用作燃料电池中的聚合物电解质膜。

公开(公告)号：US06489431B1

公开(公告)日：2002-12-03

申请号：US09806487

申请日：2001-04-12

Applicant: Kazuhisa Ishii ,  Takayasu Nihira ,  Hiroyoshi Fukuro

Inventor： Kazuhisa Ishii ,  Takayasu Nihira ,  Hiroyoshi Fukuro

IPC: C08G7310

CPC classification number: C08G73/1039 ,  C08G73/10

Abstract: A polyimide precursor having a repeating unit represented by the following general formula (1), wherein R1 contains a bivalent organic group constituting a diamine having a hexafluoropropylidene group in its molecule represented by the following general formula (2), and the reduced viscosity is from 0.05 to 5.0 dl/g (in N-methylpyrrolidone at a temperature of 30° C., concentration: 0.5 g/dl), and a polyimide obtained by imidizing said precursor: (wherein R1 is a bivalent organic group constituting a diamine, A is a hydrogen atom, a linear alkyl group including a methyl group, or a trifluoromethyl group, and n is the number of a substituent on an aromatic ring and an integer of from 1 to 4).

Abstract translation: 具有由以下通式（1）表示的重复单元的聚酰亚胺前体，其中R1分子由以下通式（2）表示的分子中包含构成具有六氟亚丙基的二胺的二价有机基团，并且比浓粘度来自 0.05〜5.0dl / g（在N-甲基吡咯烷酮中，温度30℃，浓度：0.5g / dl）和通过酰亚胺化所述前体获得的聚酰亚胺（其中R1是构成二胺的二价有机基团，A 是氢原子，包括甲基或三氟甲基的直链烷基，n是芳环上的取代基数和1至4的整数）。

公开(公告)号：US06476182B1

公开(公告)日：2002-11-05

申请号：US09741942

申请日：2000-12-21

Applicant: Brian C Auman ,  William R Corcoran, Jr. ,  John D Summers

Inventor： Brian C Auman ,  William R Corcoran, Jr. ,  John D Summers

IPC: C08G7310

CPC classification number: C08G73/1017 ,  C08G73/1014 ,  C08G73/1042 ,  C08G73/14

Abstract: Random, melt-processible copolyimides are disclosed herein. These copolyimides are semicrystalline and exhibit recoverable (semi)crystallinity from their melts. Associated processes, which entail either solution polymerization or melt polymerization, for producing and fabricating these copolyimides into useful articles having a predetermined shape are also disclosed.

公开(公告)号：US06469130B1

公开(公告)日：2002-10-22

申请号：US09626014

申请日：2000-07-26

Applicant: Jian Qin ,  Yong Li ,  Wendy Lynn Van Dyke ,  Anthony John Wisneski ,  Palani Raj Ramaswami Wallajapet ,  Hannong Rhim

Inventor： Jian Qin ,  Yong Li ,  Wendy Lynn Van Dyke ,  Anthony John Wisneski ,  Palani Raj Ramaswami Wallajapet ,  Hannong Rhim

IPC: C08G7310

CPC classification number: D01F6/36 ,  D01D5/14 ,  D04H1/4334 ,  Y10T428/29 ,  Y10T428/2913 ,  Y10T428/2967 ,  Y10T428/2969 ,  Y10T442/183 ,  Y10T442/184 ,  Y10T442/20 ,  Y10T442/2025 ,  Y10T442/60 ,  Y10T442/607

Abstract: A nonwoven web and method of preparing a novel nonwoven web of synthetic fiber are disclosed. An aqueous solution amide crosslinked synthetic precursor polymer is extruded under defined conditions through a plurality of die orifices to form a plurality of threadlines. The threadlines are attenuated with a defined primary gaseous source to form fiber under conditions of controlled macro scale turbulence and under conditions sufficient to permit the viscosity of each threadline, as it leaves a die orifice and for a distance of no more than about 8 cm, to increase incrementally with increasing distance from the die, while substantially maintaining uniformity of viscosity in the radial direction, at a rate sufficient to provide fiber having,the desired attenuation and mean fiber diameter without significant fiber breakage. The attenuated threadlines are dried with a defined secondary gaseous source. The resulting fibers are deposited randomly on a moving foraminous surface to form a substantially uniform web. The moving foraminous surface is positioned about 10 to about 100 cm from the last gaseous source to contact the threadlines. The fibers have a mean fiber diameter in the range of about 0.1 to 30 &mgr;m and are substantially free of shot. The attenuating and drying steps are carried out under conditions of controlled macro scale turbulence.

Abstract translation: 公开了一种制备合成纤维的新的非织造纤维网的非织造纤维网和方法。 将水溶液酰胺交联的合成前体聚合物通过多个模孔在规定的条件下挤出以形成多条丝线。 在受控的大规模湍流的条件下和在足以允许每个丝线的粘度的条件下，当纱线离开模口并且距离不超过约8厘米的条件下，丝线用限定的主要气态源减弱以形成纤维， 随着距离模具的距离的增加而逐渐增加，同时基本上保持径向粘度的均匀性，其速率足以提供具有期望的衰减和平均纤维直径而没有显着纤维断裂的纤维。 衰减的丝线用限定的二次气源干燥。 所得纤维随机地沉积在移动的多孔表面上以形成基本均匀的网。 移动的多孔表面位于离最后气态源约10至约100厘米处以接触线。 纤维的平均纤维直径在约0.1至30μm的范围内，并且基本上没有喷射。 衰减和干燥步骤在受控的大规模湍流条件下进行。