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1. 发明授权

US5202183A Alkali-resistant synthetic fiber 失效
标题翻译：耐碱合成纤维
公开(公告)号：US5202183A
公开(公告)日：1993-04-13
申请号：US707941
申请日：1991-05-28
申请人： Yoshihiko Hosako , Yoshifumi Furutani , Takashi Tabuchi , Yasushi Yamaguchi
发明人： Yoshihiko Hosako , Yoshifumi Furutani , Takashi Tabuchi , Yasushi Yamaguchi
IPC分类号： A47L13/16 , B01D39/16 , D01F6/48 , D01F6/94 , D04H1/42 , H01M2/16
CPC分类号： D04H1/42 , A47L13/16 , B01D39/1623 , D01F6/48 , D01F6/94 , H01M2/162 , H01M2300/0014 , Y10T428/29 , Y10T428/2913
摘要： An alkali resistant synthetic fiber and a sheeting obtained therefrom are disclosed, the fiber being comprised of a polymer mixture consisting of (A) from 15 to 80% by weight of polysulphone, (B) from 20 to 85% by weight of polyvinyl chloride having a degree of polymerization of from 800 to 2,500, and (C) up to 65% by weight of other vinyl polymer, each based on the total weight of the components (A), (B), and (C). The sheeting is excellent in alkali resistant in high temperatures and liquid retention and is therefore useful as industrial filters, battery separators, and industrial wipers.
摘要翻译：公开了一种耐碱合成纤维和由其获得的片材，该纤维由以下组成的聚合物混合物组成：（A）15至80重量％的聚砜，（B）20至85重量％的聚氯乙烯，其具有基于组分（A），（B）和（C）的总重量，聚合度为800至2,500，（C）至多65重量％的其它乙烯基聚合物。该片材在耐高温和液体保持性方面具有优异的耐腐蚀性，因此可用作工业过滤器，电池隔板和工业刮水器。

2. 发明授权

US4902452A Process for producing an acrylic fiber having high fiber characteristics 失效
标题翻译：具有高纤维特性的丙烯酸纤维的制造方法
公开(公告)号：US4902452A
公开(公告)日：1990-02-20
申请号：US78510
申请日：1987-07-28
申请人： Yoshihiro Nishihara , Yoshifumi Furutani , Masaaki Toramaru , Toshiyuki Yasunaga
发明人： Yoshihiro Nishihara , Yoshifumi Furutani , Masaaki Toramaru , Toshiyuki Yasunaga
IPC分类号： D01D5/06 , D01F6/18
CPC分类号： D01F6/18 , D01D5/06
摘要： A process for producing an acrylic fiber comprising the steps of:(a) dissolving a polymer having a weight-average molecular weight of at least 5.times.10.sup.5 and containing at least 80 wt. % acrylonitrile in a solvent comprising dimethylformamide or dimethylacetamide at a polymer concentration of 5-15 wt. % to provide a spinning solution having a viscosity of 500-1,500 poises at 45.degree. C.;(b) extruding the solution into a gaseous medium to form filaments;(c) introducing the filaments into a coagulation bath comprising water and at least one of dimethylformamide and dimethylacetamide at 0.degree. C. or below; and(d) stretching the coagulated filaments to a draw ratio of at least 3 to provide an acrylic fiber having at least 90% X-ray orientation and an X-ray crystallinity parameter of up to 1 degree. The resulting acrylic fiber has high strength and high modulus.
摘要翻译：一种制备丙烯酸纤维的方法，包括以下步骤：（a）将重均分子量为至少5×10 5，含有至少80重量％％丙烯腈在包含二甲基甲酰胺或二甲基乙酰胺的溶剂中，聚合物浓度为5-15wt。以提供在45℃下具有500-1,500泊的粘度的纺丝溶液。（b）将溶液挤出到气态介质中以形成长丝; （c）在0℃或更低的温度下将细丝引入包含水和至少一种二甲基甲酰胺和二甲基乙酰胺的凝结浴中; 和（d）将凝固的细丝拉伸至3的拉伸比，以提供具有至多1度的至少90％X射线取向和X射线结晶度参数的丙烯酸类纤维。得到的丙烯酸纤维具有高强度和高模量。

3. 发明授权

US4831069A Acrylonitrile spinning solution and process for producing fibers therewith 失效
标题翻译：丙烯腈纺丝溶液及其制造方法
公开(公告)号：US4831069A
公开(公告)日：1989-05-16
申请号：US121241
申请日：1987-11-16
申请人： Teruhiko Sugimori , Yoshifumi Furutani , Yoshinobu Shiraishi , Toshiyuki Yasunaga
发明人： Teruhiko Sugimori , Yoshifumi Furutani , Yoshinobu Shiraishi , Toshiyuki Yasunaga
IPC分类号： D01F6/18
CPC分类号： D01F6/18
摘要： A spinning solution for acrylonitrile polymers is disclosed, which has a viscosity of 30 to 520 poises (at 50.degree. C.) and which comprises an acrylonitrile polymer having a reduced viscosity of not less than 4.0, a solvent, and water, wherein the water concentration and the polymer concentration fall within the range in the drawing surrounded by straight lines connecting point A (1 wt % and 30 wt % respectively), point B (1 wt % and 10 wt % respectively), and point C (10 wt % and 10 wt % respectively). The spinning solution exhibits satisfactory spinnability in spite of its high polymer concentration and provides void-free acrylonitrile fibers having a highly circular cross-section and excellent mechanical strength.
摘要翻译：公开了一种丙烯腈聚合物的纺丝溶液，其具有30至520泊（在50℃）的粘度，并且其包含具有不低于4.0的比浓粘度的丙烯腈聚合物，溶剂和水，其中水浓度和聚合物浓度落在由连接点A（分别为1重量％和30重量％），点B（分别为1重量％和10重量％）和点C（10重量％）的直线包围的图中的范围内，和10重量％）。纺丝溶液虽然具有高聚合物浓度，但表现出令人满意的可纺性，并提供具有高圆形横截面和优异的机械强度的无孔丙烯腈纤维。

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