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1. 发明专利

JP2003113524A WASHING BATH FOR HIGH SPEED SPINNING 审中-公开
公开(公告)号：JP2003113524A
公开(公告)日：2003-04-18
申请号：JP2001308381
申请日：2001-10-04
申请人： KURARAY CO
发明人： SANO TOMOYUKI , OMORI AKIO , SATO MASAHIRO , MAKINO MASUO , IWABE HIROKI
IPC分类号： D01D5/06
摘要： PROBLEM TO BE SOLVED: To stably obtain a polyvinyl alcohol-based spun raw fiber capable of being drawn in high efficiency and at a high speed, by a high speed spinning method using a simple installation. SOLUTION: This polyvinyl alcohol-based spun raw fiber is produced by extruding the organic solvent-based spinning raw liquid of the polyvinyl alcohol- based polymer from a nozzle, solidifying the extruded product, relaxing and shrinking the obtained solid fiber, and then guiding the fiber to the first godet roller through a washing bath. Therein, the liquid surface area of the washing tank is five times or more the cross-sectional area of a solidifying liquid inlet.

2. 发明专利

JP2002242030A METHOD FOR PRODUCING POLYVINYL ALCOHOL-BASED FLAME RETARDANT FIBER 失效
公开(公告)号：JP2002242030A
公开(公告)日：2002-08-28
申请号：JP2001042866
申请日：2001-02-20
申请人： KURARAY CO
发明人： INADA SHINYA , SATO MASAHIRO , OMORI AKIO , OKI HIROYUKI
IPC分类号： D01F6/14 , D01F11/06
摘要： PROBLEM TO BE SOLVED: To provide a method for producing an efficient and a high performance polyvinyl alcohol (PVA)-based flame retardant fiber capable of keeping flame retarding effects for a long time and further obtain the fiber and fiber structure obtained by the aforesaid method. SOLUTION: This method for producing a polyvinyl alcohol-based flame retardant fiber is to wet spin or dry spin a dope containing at least a vinyl alcohol-based polymer and an organic solvent into a solidification solution having a solidifying function to the vinyl alcohol-based polymer, subsequently pass the spun filaments at least an extracting process in which the spun filaments are impregnated in an extracting solution for extracting the organic solution constituting the spinning solution and a drying process to obtain the polyvinyl alcohol-based flame retardant polymer. In the method, the extracting solution is an organic solvent-based extracting solution and the fiber is produced by introducing a substituting process in which a substituting solution obtained by dissolving a hardly water soluble flame retardant in the organic solvent is added to the filaments in either process from removal of the solidifying solution to the drying process to produce the fiber.

3. 发明专利

JP2001355122A FLAME-RETARDANT FIBER AND METHOD FOR PRODUCING THE SAME 失效
公开(公告)号：JP2001355122A
公开(公告)日：2001-12-26
申请号：JP2000176781
申请日：2000-06-13
申请人： KURARAY CO
发明人： INADA SHINYA , SATO MASAHIRO , TOKUNAGA ISAO , OMORI AKIO
IPC分类号： D01F6/48 , D01F1/10 , D01F6/50
摘要： PROBLEM TO BE SOLVED: To obtain a high-grade flame-retardant fiber benign to the human body and excellent in both production processability and finishing processability, to provide a method for producing the above flame-retardant fiber, and to provide a textile structure using the above flame-retardant fiber. SOLUTION: This high-grade flame-retardant fiber is obtained by finely dispersing a metallic soap in a fiber containing a halogen-containing polymer as a constituent.

4. 发明专利

JP2001228166A FLOW STATE OBSERVATION METHOD 失效
公开(公告)号：JP2001228166A
公开(公告)日：2001-08-24
申请号：JP2000036233
申请日：2000-02-15
申请人： KURARAY CO
发明人： SATO MASAHIRO , OMORI AKIO
IPC分类号： G01P5/20
摘要： PROBLEM TO BE SOLVED: To provide an observation method for continuously and easily observing the flow state of a liquid fluid in a piping or a storage tank, especially, of a hardening liquid in a spinning solidification bath. SOLUTION: Grain with a specific gravity ranging from A+0.01 to A+0.07 g/cm3 and the major diameter of 2-10 mm is thrown into a liquid fluid with a specific gravity A g/cm3, and the motion of the grain is checked for observing the flow state of the liquid fluid.

5. 发明专利

JP2001115330A POLYVINYL ALCOHOL-BASED FIBER AND METHOD FOR PRODUCING THE SAME FIBER 失效
公开(公告)号：JP2001115330A
公开(公告)日：2001-04-24
申请号：JP29007899
申请日：1999-10-12
申请人： KURARAY CO
发明人： SATO MASAHIRO , TOKUNAGA ISAO , OMORI AKIO , OGAWA ATSUHISA , SAITO TADASHI
IPC分类号： C08F16/06 , D01D5/06 , D01F6/14
摘要： PROBLEM TO BE SOLVED: To obtain a polyvinyl alcohol-based fiber excellent in characteristics such as tenacity and elongation to break in spite of relatively thick diameter and provide an efficient method for producing the above fiber and obtain a reinforcing material composed of the above fiber and excellent in characteristics. SOLUTION: This polyvinyl alcohol-based fiber has >=35 μm fiber diameter, >=9 cN/dtex breaking tenacity, >=7% breaking elongation,

6. 发明专利

JP2000212828A POLYVINYL ALCOHOL-BASED FIBER AND ITS PRODUCTION 失效
公开(公告)号：JP2000212828A
公开(公告)日：2000-08-02
申请号：JP867899
申请日：1999-01-18
申请人： KURARAY CO
发明人： INADA SHINYA , SATO MASAHIRO , OMORI AKIO
IPC分类号： D06M11/00 , D01F6/14 , D01F11/06 , D06M11/79 , D06M101/00 , D06M101/16 , D06M101/18
摘要： PROBLEM TO BE SOLVED: To obtain polyvinyl alcohol-based fibers not causing the mutual agglutination of the fibers on their storage, and to provide a method for producing the polyvinyl alcohol-based fibers, enabling their stable spinning without causing the mutual agglutination of the fibers on their production. SOLUTION: The polyvinyl alcohol-based fibers are produced by dissolving a polyvinyl alcohol-based polymer in a solvent, extracting the solvent from the spun raw liquid, drying the obtained fibers, and, if necessary, drawing and thermally treating the dried fibers. Therein, just before the drying process, inorganic particles having an average particle diameter of 0.1-5 μm and dispersed in an extraction bath are imparted to the fibers in an amount of 0.05-5 wt.% based on the fibers.

7. 发明专利

JP2000136430A PRODUCTION OF POLYVINYL ALCOHOL-BASED FIBER 失效
公开(公告)号：JP2000136430A
公开(公告)日：2000-05-16
申请号：JP30505698
申请日：1998-10-27
申请人： KURARAY CO
发明人： UEHARA YOSHITAKA , OKI HIROYUKI , SATO MASAHIRO
IPC分类号： D01F6/14 , D01F6/50
摘要： PROBLEM TO BE SOLVED: To provide an industrially easy and inexpensive method for producing a polyvinyl alcohol-based fiber having various functional groups uniformly introduced thereinto. SOLUTION: A polyvinyl alcohol-based polymer (component A) and a modifying agent (component B) having an atomic group reactive with hydroxyl groups present in the molecule of the polyvinyl alcohol-based polymer in the molecule are added to a solvent to prepare a spinning stock solution which is spun after binding the component A to the component B in the spinning stock solution or simultaneously with the binding of the component A to the component B therein.

8. 发明专利

JPH11287971A LENS MATERIAL FOR EYE 失效
公开(公告)号：JPH11287971A
公开(公告)日：1999-10-19
申请号：JP10708698
申请日：1998-04-02
申请人： KURARAY CO
发明人： YASUDA TOKUGEN , INOUE HITOSHI , KITAJIMA SATSUKI , SATO MASAHIRO , YO TAKESHI , KOMURA IKUO , FUJITANI TAKUMI
IPC分类号： G02C7/04 , A61L27/00 , C08F230/08 , C08F283/12 , C08F290/06 , G02B1/04
摘要： PROBLEM TO BE SOLVED: To obtain a material having excellent oxygen permeating property, mechanical strength, durability and flexibility and excellent characteristics such as dimensional stability, transparency and wettability with water by constituting the material of a copolymer obtd. by polymn. of a monomer mixture essentially comprising specified organosiloxane monomers. SOLUTION: This lens material for eyes consists of a copolymer prepared by polymn. of a monomer mixture comprising bifunctional organosiloxane monomers expressed by formula I, monocyclic monomers expressed by formula II and monofunctional organosiloxane monomers expressed by formula III. In formulae I to III, R , R , R and R are independently hydrogen atoms or methyl groups, R to R and Z to Z are each independently 1-10C univalent hydrocarbon groups, A to A are each independently oxygen atoms, sulfur atoms, or the like, X to X are each independently single bonds or divalent org. groups, (m), (n) are each an integer of 0 to 300, and Y is a univalent hydrocarbon group.

9. 发明专利

JPH11286826A PRODUCTION OF POLYVINYL ALCOHOL SYNTHETIC FIBER 失效
公开(公告)号：JPH11286826A
公开(公告)日：1999-10-19
申请号：JP9416598
申请日：1998-04-07
申请人： KURARAY CO
发明人： OKI HIROYUKI , SATO MASAHIRO
IPC分类号： D06M15/55 , D01F6/14 , D01F11/06 , D06M13/02 , D06M13/11 , D06M101/00 , D06M101/16 , D06M101/18
摘要： PROBLEM TO BE SOLVED: To obtain the subject fiber having high tenacity, elasticity and wet-heat resistance and useful for industrial material, etc., without using complicate process by crosslinking a polyvalent epoxy compound under specific condition in a state e.g. included in a polyvinyl alcohol polymer, etc. SOLUTION: The objective polyvinyl alcohol synthetic fiber is produced by including or applying preferably 0.1-10 mol.% (based on the repeating constituent unit of the polymer) of a polyvalent epoxy compound such as ethylene glycol diglycidyl ether into a polyvinyl alcohol polymer (having a degree of saponification of preferably 90-99.99 mol.%) or to the surface of the fiber of the polymer and crosslinking the polyvinyl alcohol polymer by reacting the epoxy compound with the hydroxyl group of the polyvinyl alcohol polymer by the aid of a basic catalyst such as sodium acetate.

10. 发明专利

JPH11100716A HIGH STRENGTH FIBER WITH LARGE DIAMETER AND ITS PRODUCTION 失效
公开(公告)号：JPH11100716A
公开(公告)日：1999-04-13
申请号：JP25627697
申请日：1997-09-22
申请人： KURARAY CO
发明人： SATO MASAHIRO , SAITO TADASHI , HIKASA JUNICHI , TOKUNAGA ISAO , OMORI AKIO
IPC分类号： D01F6/14
摘要： PROBLEM TO BE SOLVED: To obtain a high strength fiber having a large fiber diameter, a circular cross section, fine surface unevenness formed on the surface and water resistance. SOLUTION: This high strength fiber with a large diameter is obtained by extruding a dope obtained by adding a prescribed amount of a solidifying solvent and regulated so as to have a prescribed viscosity at the spinning time, into a solidifying bath containing a prescribed amount of the solvent for the dope, and drawing the obtained fiber to a prescribed total drawing ratio, when carrying out a wet spinning of a PVA-based polymer by using organic solvents as the solvent for the dope and the solidifying solvent. The fiber can be used as an excellent auxiliary reinforcing material by adding the fiber in a cement formed product because the fiber provides reinforcing characteristics beyond the conventional characteristics.

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