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162 条记录 (耗时 0.018 秒)

    Method for dissolving PPTA in sulfuric acid using a twin screw extruder
    101.
    发明授权
    Method for dissolving PPTA in sulfuric acid using a twin screw extruder 有权
    使用双螺杆挤出机将PPTA溶解在硫酸中的方法

    公开(公告)号：US07527841B2

    公开(公告)日：2009-05-05

    申请号：US11663980

    申请日：2005-10-20

    申请人： Bernardus Maria Koenders

    发明人： Bernardus Maria Koenders

    IPC分类号： B29C70/08

    CPC分类号： C08J3/05 ,  B29C47/6068 ,  B29C47/6075 ,  C08J2377/10 ,  D01D1/02 ,  D01F6/805 ,  Y10T428/1369 ,  Y10T428/2913 ,  Y10T428/2969

    摘要： Described is a method for dissolving PPTA or copolymers thereof in sulfuric acid using a twin screw extruder having transporting, mixing, and kneading elements with an entering zone, an intermediate zone, a mixing zone, a negative transport zone, a degassing zone, and a pressure build-up zone. The method includes transporting PPTA or copolymer thereof into the entering zone at a transport capacity low enough as to prevent sulfuric acid entering the entering zone; introducing sulfuric acid in the intermediate zone; essentially fully filling the mixing zone to allow sufficient time to mix and dissolve PPTA or copolymer thereof in the sulfuric acid to obtain a PPTA or copolymer-sulfuric acid solution; creating after the mixing zone a negative transport zone to obtain a product lock between the mixing zone and the degassing zone; creating a thin film of the PPTA or copolymer-sulfuric acid solution in the degassing zone to degas the solution; and entering the solution into the output pressure build-up zone to partially fill this zone and to leave the twin screw extruder.

    摘要翻译： 描述了使用具有输送区域，中间区域，混合区域，负运送区域，脱气区域和输送区域的输送，混合和捏合元件的双螺杆挤出机将PPTA或其共聚物溶解在硫酸中的方法。 压力积聚区。 该方法包括以足够低的运输能力将PPTA或其共聚物输送到进入区域中，以防止硫酸进入进入区域; 在中间区引入硫酸; 基本上完全填充混合区以允许足够的时间将PPTA或其共聚物混合并溶解在硫酸中以获得PPTA或共聚物 - 硫酸溶液; 在混合区之后产生负运送区，以在混合区和脱气区之间获得产品锁; 在脱气区中形成PPTA或共聚物 - 硫酸溶液的薄膜，使溶液脱气; 并将溶液进入输出压力累积区以部分填充该区域并离开双螺杆挤出机。

    Non-fibrous polymer solution of para-aramid with high relative viscosity
    102.
    发明申请
    Non-fibrous polymer solution of para-aramid with high relative viscosity 有权
    对位芳族聚酰胺的非纤维聚合物溶液具有较高的相对粘度

    公开(公告)号：US20060235104A1

    公开(公告)日：2006-10-19

    申请号：US10556152

    申请日：2004-05-04

    申请人： Anton Hendriks ,  Jan Surquin ,  Mirjam Oldenzeel ,  Rene Journee ,  Vincent Van Bommel

    发明人： Anton Hendriks ,  Jan Surquin ,  Mirjam Oldenzeel ,  Rene Journee ,  Vincent Van Bommel

    IPC分类号： C08G61/02

    CPC分类号： D01F6/605 ,  C08J5/18 ,  C08J2377/10 ,  C08L77/10 ,  D21H13/26

    摘要： The invention relates to a non-fibrous polymer solution essentially consisting of 1 to 8 wt. % para-aramid, at least 50 mole % of the aromatic moieties thereof being unsubstituted, in a mixture of a) a polar amide solvent selected from N-methyl-2-pyrrolidone, N,N′-dimethyl-formamide, N,N′-dimethylacetamide, tetramethylurea, and mixtures thereof; b) between 0.7 mole of an alkali or alkaline earth metal chloride per mole amide groups of the para-aramid and 7.5 wt. % of the alkali or alkaline earth metal chloride, and c) water; and wherein at least 50 wt. % of the formed hydrochloric acid has been neutralized to obtain a solution having a dynamic viscosity which is at least a factor three smaller than the dynamic viscosity of the polymer solution without neutralization. The invention further pertains to a process making the same and para-aramid pulp-like fiber, paper and film made from said polymer solution.

    摘要翻译： 本发明涉及一种非纤维聚合物溶液，其基本上由1至8wt。 ％的对位芳族聚酰胺，其至少50摩尔％的芳族部分是未取代的，a）极性酰胺溶剂的选自N-甲基-2-吡咯烷酮，N，N'-二甲基甲酰胺，N，N '二甲基乙酰胺，四甲基脲及其混合物; b）每摩尔对位芳族聚酰胺酰胺基团的0.7摩尔碱金属或碱土金属氯化物和7.5重量％ ％的碱金属或碱土金属氯化物，和c）水; 并且其中至少50wt。 所形成的盐酸的％已经被中和，以获得动态粘度比未中和的聚合物溶液的动态粘度至少要小三倍的溶液。 本发明还涉及制备由所述聚合物溶液制成的相同和对位芳族聚酰胺浆状纤维，纸和膜的方法。

    Para-oriented aromatic polyamide porous film
    104.
    发明授权
    Para-oriented aromatic polyamide porous film 失效
    对位芳族聚酰胺多孔膜

    公开(公告)号：US5856426A

    公开(公告)日：1999-01-05

    申请号：US756245

    申请日：1996-11-25

    申请人： Tsutomu Takahashi ,  Tatsuo Tateno ,  Yoshifumi Tsujimoto

    发明人： Tsutomu Takahashi ,  Tatsuo Tateno ,  Yoshifumi Tsujimoto

    IPC分类号： C08J5/18 ,  C08J9/26 ,  C08J9/28 ,  H01M2/16 ,  C08G73/10 ,  B29C39/14 ,  B32B27/08 ,  C08G69/08

    CPC分类号： C08J9/26 ,  C08J5/18 ,  C08J9/28 ,  H01M2/162 ,  H01M2/1653 ,  C08J2201/0542 ,  C08J2377/10 ,  Y10T428/31725

    摘要： A para-oriented polyamide porous film comprising a fibril having a diameter of not more than 1.mu., with fibrils planarly arranged as a network or nonwoven fabric and laminated in a layer, the thermal linear expansion coefficient at 200.degree.-300.degree. C. within .+-.50.times.10.sup.-6 /.degree.C. and 30-95% vacant spaces. Also, a battery separator using the porous film. Also, a production process of: (a) forming a film-like material from a solution containing 1-10% of a para-oriented aromatic polyamide having an inherent viscosity of 1.0-2.8 dl/g and 1-10% of a chloride of an alkali metal or an alkali earth metal in a polar amide or polar urea solvent; (b) maintaining the film-like material at not less than 20.degree. C. and not more than -5.degree. C. to deposit the para-oriented aromatic polyamide; and (c) immersing the film-like material in an aqueous or alcoholic solution to elute the sovlent and chloride of the alkali metal or alkali earth metal, then drying to obtain the para-oriented aromatic polyamide porous film. The film has uniformity and fine vacant spaces, which cannot be accomplished by a nonwoven fabric. Characteristics of a para-aramid (e.g., high heat resistance, high rigidity, high strength, etc.) are used.

    摘要翻译： 对位取向的聚酰胺多孔膜，其包含直径不大于1微米的原纤维，其中原纤维平面地布置为网状或非织造织物并层压在一层中，热线膨胀系数在200-300℃ +/- 50×10 -6 /℃和30-95％的空位。 另外，使用多孔膜的电池隔板。 另外，制造方法为：（a）从含有1-10％的对数取向性芳香族聚酰胺的溶液形成薄膜状材料，所述对位芳香族聚酰胺的特性粘度为1.0〜2.8dl / g，和1-10％的氯化物 极性酰胺或极性脲溶剂中的碱金属或碱土金属; （b）将膜状材料保持在不低于20℃且不超过-5℃以沉积对位芳族聚酰胺; 和（c）将膜状材料浸渍在水溶液或醇溶液中以洗脱碱金属或碱土金属的溶液和氯化物，然后干燥以获得对位芳族聚酰胺多孔膜。 该膜具有均匀性和细小的空隙，无法通过无纺织物实现。 使用对位芳族聚酰胺的特性（例如，高耐热性，高刚性，高强度等）。

    Filament-, fiber- or film-forming aromatic copolyamide from aromatic diamine mixture
    110.
    发明授权
    Filament-, fiber- or film-forming aromatic copolyamide from aromatic diamine mixture 失效
    来自芳族二胺混合物的丝，纤维或成膜芳族共聚酰胺

    公开(公告)号：US4931533A

    公开(公告)日：1990-06-05

    申请号：US291503

    申请日：1988-12-29

    申请人： Friedrich Herold

    发明人： Friedrich Herold

    IPC分类号： C08G69/26 ,  C08G69/32 ,  C08J5/18 ,  D01F6/80

    CPC分类号： C08J5/18 ,  C08G69/32 ,  D01F6/805 ,  C08J2377/10 ,  Y10T428/31725

    摘要： Filaments, fibers and films from aromatic copolyamides (polyaramids) of the dicarboxylic acid/diamine type of at least four aromatic monomeric compounds of A', B', C' and D' which each contain a group of the following formulae:A: --CO--Ar--CO--B: --NH--Ar.sup.1 --NH--C: --NH--Ar.sup.2 --NH--D: --NH--Ar.sup.3 --Z--Ar.sup.3 --NH--and processes for their preparation and possible applications. Filaments, fibers and films having a high elongation at break and a high initial modulus are obtained using easily accessible monomers and polyaramids synthesized therefrom which are highly soluble in organic solvents.

    摘要翻译： A，B'，C'和D'的至少四种芳族单体化合物的二羧酸/二胺类型的芳族共聚酰胺（聚芳族聚酰胺）的长丝，纤维和薄膜各自含有下列基团：A： - CO-Ar-CO-B：-NH-Ar1-NH-C：-NH-Ar2-NH-D：-NH-Ar3-Z-Ar3-NH-，其制备方法和可能的应用。 使用容易获得的单体和由其合成的聚芳族化合物，其高度可溶于有机溶剂，获得具有高断裂伸长率和高初始模量的丝，纤维和薄膜。