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1. 发明授权

US6020421A Polyester composition and method for producing the same 失效
标题翻译：聚酯组合物及其制备方法
公开(公告)号：US6020421A
公开(公告)日：2000-02-01
申请号：US144460
申请日：1998-09-01
申请人： Yasumasa Fukushima , Kiwamu Yuki , Tsunetoshi Matsuda
发明人： Yasumasa Fukushima , Kiwamu Yuki , Tsunetoshi Matsuda
IPC分类号： C08G63/86 , C08K5/521 , C08K5/49 , C08G63/78
CPC分类号： C08G63/86 , C08K5/521
摘要： A poly(ethylene terephthalate) polyester composition which is decreased in the amount of a cyclic trimer of ethylene terephthalate formed in melting, and a method for producing the same.
摘要翻译：在熔融时形成的对苯二甲酸乙二醇酯的环状三聚体的量减少的聚对苯二甲酸乙二醇酯聚酯组合物及其制造方法。

2. 发明授权

US5093063A Method of producing polyvinyl alcohol fibers 失效
标题翻译：生产聚乙烯醇纤维的方法
公开(公告)号：US5093063A
公开(公告)日：1992-03-03
申请号：US446732
申请日：1989-12-06
申请人： Masaharu Watanabe , Kenichi Tanimoto , Kazutaka Kooda , Naohiko Nagata , Keiichi Wakayama , Tsunetoshi Matsuda
发明人： Masaharu Watanabe , Kenichi Tanimoto , Kazutaka Kooda , Naohiko Nagata , Keiichi Wakayama , Tsunetoshi Matsuda
IPC分类号： D01D5/06 , D01F6/14
CPC分类号： D01D5/06 , D01F6/14 , Y10T428/2913
摘要： A high tenacity, high initial modulus polyvinyl alcohol fiber is produced by:(1) dissolving polyvinyl alcohol with a degree of polymerization of not less than 1,500 in a solvent capable of giving a 5 wt % polyvinyl alcohol solution and the solvent is further characterized in that the nuclear magnetic resonance spectrum measured at 50.degree. C. after storage of the solution at 50.degree. C. for 96 hours following preparation thereof is substantially identical with that measured at 50.degree. C. immediately after preparation thereof, with peaks for the three kinds of hydroxyl groups of polyvinyl alcohol being clearly distinguishable in each nuclear magnetic resonance spectrum,(ii) forming filaments by spinning the spinning solution under conditions which satisfy the requirementsDs.ltoreq.5.0 wherein Ds is the spinning stretch ratio defined as the ratio (V.sub.2 /V.sub.1) of the take off speed (V.sub.2) to the first take off roller speed (V.sub.1),(iii) subjecting the filaments thus-formed to multistage stretching in at least two stages either continuously with step (ii) or after temporarily winding up the filaments, wherein at least one stretching stage in the multistage stretching is conducted at a temperature of not lower than 200.degree. C. until the total stretch ratio amounts to not less than 15.

3. 发明授权

US4971861A Polyvinyl alcohol fiber and method of manufacture thereof 失效
标题翻译：聚乙烯醇纤维及其制造方法
公开(公告)号：US4971861A
公开(公告)日：1990-11-20
申请号：US138109
申请日：1987-12-28
申请人： Masaharu Watanabe , Kenichi Tanimoto , Kazutaka Kooda , Naohiko Nagata , Keiichi Wakayama , Tsunetoshi Matsuda
发明人： Masaharu Watanabe , Kenichi Tanimoto , Kazutaka Kooda , Naohiko Nagata , Keiichi Wakayama , Tsunetoshi Matsuda
IPC分类号： D01D5/06 , D01F6/14
CPC分类号： D01D5/06 , D01F6/14 , Y10T428/2913
摘要： A high tenacity, high intitial modulus polyvinyl alcohol fiber showing a high level of crystalline heat of fusion, characterized in that the fiber is made of polyvinyl alcohol having a degree of polymerization of not less than 1,500, has a tenacity of not less than 17 g/d and an initial modulus of elasticity of not less than 400 g/d and shows a crystalline heat of fusion of not less than 29 cal/g, and a method of producing said polyvinyl alcohol fiber comprising:(i) dissolving polyvinyl alcohol with a degree of polymerization of not less than 1,500 in a solvent capable of giving a 5 wt % polyvinyl alcohol solution and the solvent is further characterized in that the nuclear magnetic resonance spectrum measured at 50.degree. C. after storage of the solution at 50.degree. C. for 96 hours following preparation thereof is substantially identical with that measured at 50.degree. C. immediately after preparation thereof, with peaks for the three kinds of hydroxyl groups of polyvinyl alcohol being clearly distinguishable in each nuclear magnetic resonance spectrum,(ii) forming unstretched filaments by spinning the spinning solution under conditions which satisfy the requirementDs.ltoreq.5.0 wherein Ds is the spinning stretch ratio defined as the ratio (V.sub.2 V.sub.1) of the take off speed (V.sub.2) to the first take off roller speed (V.sub.1),(iii) subjecting the unstretched filaments thus-formed to multistage stretching in at least two stages either continuously with step (ii) or after temporarily winding up the frilaments, wherein at least one stretching stage in the multistage stretching is conducted at a temperature of not lower than 200.degree. C. until the total stretch ratio amounts to not less than 15.

4. 发明授权

US5886096A Polyamide resin composition, and fibers, films and molded articles using the same 失效
标题翻译：聚酰胺树脂组合物，以及使用其的纤维，膜和模塑制品
公开(公告)号：US5886096A
公开(公告)日：1999-03-23
申请号：US916450
申请日：1997-08-22
申请人： Miho Yoshida , Tsunetoshi Matsuda , Masahiro Hosoda
发明人： Miho Yoshida , Tsunetoshi Matsuda , Masahiro Hosoda
IPC分类号： C08K3/22 , C08J3/09 , C08L77/00
CPC分类号： C08K3/22 , C08K2003/2217 , C08K2003/222
摘要： A polyamide resin composition comprising a polyamide and an alkaline earth metal compound, wherein the amount of a cyclic monomer formed by melting said composition under the conditions of a moisture content of 0.02% by weight or less, at 0.01 Torr or below, at 250.degree. C., and for 8 hours is not more than 0.7 parts by weight per 100 parts by weight of the polyamide; and fibers, films and molded articles with the use of the same.
摘要翻译：包含聚酰胺和碱土金属化合物的聚酰胺树脂组合物，其中通过在0.01Torr或更低的水分含量为0.02重量％或更低的条件下在250℃下将所述组合物熔化而形成的环状单体的量并且8小时不超过每100重量份聚酰胺0.7重量份; 以及使用其的纤维，膜和模制品。

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