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21. 发明专利

JP2002154171A METHOD FOR MANUFACTURING POLYIMIDE JOINED BELT 失效
公开(公告)号：JP2002154171A
公开(公告)日：2002-05-28
申请号：JP2000352078
申请日：2000-11-20
申请人： NITTO DENKO CORP
发明人： DOMOTO TADANORI , MOCHIZUKI SHU
IPC分类号： B29C55/02 , B29D29/00
摘要： PROBLEM TO BE SOLVED: To provide a method for manufacturing a thermosetting aromatic polyimide joined belt capable of easily corresponding to the production of a belt having an arbitrary size without using an adhesive. SOLUTION: The method for manufacturing the endless polyimide joined belt having a joint in its lateral direction has a film manufacturing process for manufacturing a thermosetting aromatic polyimide precursor film, a bonding process for superposing the end parts of the polyimide precursor films to heat- seal them to form a tubular body having a joint part formed thereto and an imidation process for heating the tubular body in a fixed state or under tension to imidate the polyimide precursor.

22. 发明专利

JP2002001804A AROMATIC POLYIMIDE FILM AND ITS MANUFACTURING METHOD 失效
公开(公告)号：JP2002001804A
公开(公告)日：2002-01-08
申请号：JP2000182577
申请日：2000-06-19
申请人： NITTO DENKO CORP
发明人： DOMOTO TADANORI , MOCHIZUKI SHU
IPC分类号： C08J5/18 , B29C55/02 , B29C55/08
摘要： PROBLEM TO BE SOLVED: To provide an aromatic polyimide film having mechanical properties including tensile modulus of not less than 10 Gpa which has not been observed in conventional films and to provide its manufacturing method. SOLUTION: A method for manufacturing an aromatic polyimide film comprises a process of swelling a precursor film of a solvent-remaining aromatic polyimide with a swelling agent, a process of stretching the swollen film at least in a uniaxial direction, a process of removing the swelling agent from the stretched film and a process of fixing and heating the film to convert it into an imide.

23. 发明专利

JP2000279822A METHOD AND APPARATUS FOR CLEANING AIR 失效
公开(公告)号：JP2000279822A
公开(公告)日：2000-10-10
申请号：JP8899799
申请日：1999-03-30
申请人： NITTO DENKO CORP
发明人： DOMOTO TADANORI , HIYORI TAKAYUKI
IPC分类号： A61L9/00 , A61L9/20 , B01D53/86 , B01J31/06 , B01J35/02 , B01J38/48 , C08K3/22 , C08L27/18
摘要： PROBLEM TO BE SOLVED: To lean highly efficiently even a heavily contaminated air containing much of a nitrogen compound and a sulfur compound over a long period of time by using a photocatalytic sheet wherein a photocatalytic grain-containing polytetrafluoroethylene-burned layer is a photocatalytic layer. SOLUTION: This apparatus removes a noxious gas in an air by a method wherein a photocatalytic layer of a photocatalytic sheet wherein the photocatalytic layer on a base material is formed of a photocatalytic grain- containing polytetrafluoroethylene-burned layer, is irradiated with ultraviolet radiation, and the air is brought into contact therewith to remove the noxious gas in the air. In this case, the photocatalytic grain-containing polytetrafluoroethylene burned layer is periodically purified.

24. 发明专利

JP2000061316A STRUCTURE OF VENTILATING PHOTOCATALYSTIC SHEET 失效
公开(公告)号：JP2000061316A
公开(公告)日：2000-02-29
申请号：JP25184598
申请日：1998-08-21
申请人： NITTO DENKO CORP
发明人： HIYORI TAKAYUKI , DOMOTO TADANORI , ISHIZAKI SATORU , DOI TOMOKO
IPC分类号： A61L9/00 , B01D53/86 , B01J35/02 , B01J35/06
摘要： PROBLEM TO BE SOLVED: To quarantee an excellent air purification efficiency for a long period of time by providing a mesh-like protective sheet additively along a mesh-like photocatalytic sheet wherein a photocatalytic particle-containing resin layer is provided to a surface of a mesh-like support base material or a bending formed body of the mesh-like photocatalytic sheet. SOLUTION: A photocatalytic particle-containing polytetrafluoroethylene burnt layer is provided to a surface of a mesh-like support base material such as, for example, a plain weave glass cloth or the like to obtain a mesh-like photocatalytic sheet 1. In order to obtain a ventilating photocatalytic sheet structured body A or B or C from the mesh-like photocatalytic sheet 1, for example, the mesh-like photocatalytic sheet 1 is formed by bending in a cylindrical body (a bellows body) 10, and the formed body 10 is covered by a mesh-like protective sheet 2 (the structured body A, C), or the mesh-like protective sheet 2 is piled up on a side surface of the mesh-like photocatalytic sheet 1 (the structured body B). As the mesh-like protective sheet 2, excepting a metal-made net and a resin-made net, a woven fabric, a nonwoven fabric, or the like of a synthetic resin fiber or the like are used.

25. 发明专利

JPH1147558A AIR CLEANING PROCESS 失效
公开(公告)号：JPH1147558A
公开(公告)日：1999-02-23
申请号：JP21996897
申请日：1997-07-31
申请人： NITTO DENKO CORP
发明人： IKEHATA HISASHI , IIMURA MITSUO , DOMOTO TADANORI , UEMORI KAZUYOSHI
IPC分类号： B01D53/94 , B01J21/06 , B01J35/02
摘要： PROBLEM TO BE SOLVED: To provide an air cleaning process for carrying out the effective gas decomposition by a low power consumption, in a small size and simple plasma-generating means in the case of decomposing toxic gas by energizing photocatalyst titanium oxide fine particles by plasma discharge and bringing the energized photocatalyst titanium oxide fine particles into contact with toxic gas. SOLUTION: Air is passed through an air cleaner provided with plasma generating means 21-22 and a porous contact body 4 carrying photocatalyst titanium oxide fine particles and formed in an air passage while bringing the air into contact with plasma and photocatalyst titanium fine particles energized by plasma.

26. 发明专利

JPH10265749A PHOTO-DECOMPOSABLE TACKY ADHESIVE COMPOSITION 失效
公开(公告)号：JPH10265749A
公开(公告)日：1998-10-06
申请号：JP7593697
申请日：1997-03-27
申请人： NITTO DENKO CORP
发明人： IKEHATA HISASHI , DOMOTO TADANORI
IPC分类号： C09J9/00 , C09J11/04
摘要： PROBLEM TO BE SOLVED: To obtain the subject composition enabling easy removal of residual adhesive on an adherend without considerably lowering the adhesivity by including a tacky adhesive component and titanium oxide fine particles. SOLUTION: This composition contains (A) a tacky adhesive component (e.g. a pressure-sensitive adhesive such as acrylic, rubber-based, styrene-isoprene- styrene adhesives, etc.) and (B) fine particles of titanium oxide having catalytic action (preferably anatase titanium oxide having high photo-catalytic activity and a particle diameter of

27. 发明专利

JPH09316214A ANTI-STAINING SHEET 失效
公开(公告)号：JPH09316214A
公开(公告)日：1997-12-09
申请号：JP13210096
申请日：1996-05-27
申请人： NITTO DENKO CORP
发明人： DOMOTO TADANORI , IIMURA MITSUO , SATO KENJI
IPC分类号： C08J5/18 , B01J35/02 , B01J35/06 , D06M11/00 , D06M11/46 , D06M15/256
摘要： PROBLEM TO BE SOLVED: To obtain the subject product non-adhesive and water-repellent in its surface, having an excellent organic compound-degrading action, and thereby exhibiting an excellent anti-staining performance by exposing photocatalyst particles on the surface of a fluororesin sheet. SOLUTION: This anti-staining sheet is obtained by exposing photocatalyst particles (preferably anatase type titanium dioxide particles) on the surface of a fluororesin (preferably polytetrafluoroethylene) sheet, and is produced by cutting a cured product comprising the photocatalyst particles and the fluororesin in a desired thickness, preferably 0.1-0.3μm. The objective sheet is preferably obtained by homogeneously mixing the powder of the fluororesin with the photocatalyst particles by the use of a powder mixer, press-molding the mixture in a metal mold, curing the molded product at a temperature above the melting point of the powder of the fluororesin by a free sinter method, etc., and subsequently cutting the cured product into the sheet with a cutting lathe, etc. The diameter of the photocatalyst particles is preferably 0.007-0.5μm. The particle diameter of the fluororesin powder is generally 20-800μm.

28. 发明专利

JPH09313780A WASHING MACHINE 失效
公开(公告)号：JPH09313780A
公开(公告)日：1997-12-09
申请号：JP13209996
申请日：1996-05-27
申请人： NITTO DENKO CORP
发明人： SATO KENJI , DOMOTO TADANORI , IIMURA MITSUO , TAKAHATA EIJI
IPC分类号： D06F39/12
摘要： PROBLEM TO BE SOLVED: To prevent the blots stuck on the outside face of an inner tub and the inside face of an outer tub and the occurrence of mildew by organic matters such as a soap component in a washing machine having a double tub constituted of an inner tub and an outer tub. SOLUTION: This one-tub washing machine is provided with a washing/spin- drying tub 12 and a water storage/drain tub 11 respectively, and stainless tub main bodies of them having the thickness of 1mm are applied with the sand blast process at the average surface roughness (Rz) of 12μm. A primer layer having the thickness of 7μm is formed on the inside face and the outside face of the tub main bodies, and a PTFE(polytetrafluoroethylene) layer containing anatase photocatalyst titanium oxide fine grains having the grain size of 0.02μm is formed on the primer layer. A circular black light 13 emitting the ultraviolet light (wavelength 310-400nm) is installed on the inner face side of the folded portion on the washing/spin-drying tub 12 side at the upper end of the water storage/drain tub 11.

29. 发明专利

JPH09207289A FILM STRUCTURAL MATERIAL AND ITS MANUFACTURE 失效
公开(公告)号：JPH09207289A
公开(公告)日：1997-08-12
申请号：JP2109196
申请日：1996-02-07
申请人： NITTO DENKO CORP , FUJISHIMA AKIRA , HASHIMOTO KAZUHITO
发明人： DOMOTO TADANORI , ONISHI NOBUO , TORII AKIRA , FUJISHIMA AKIRA , HASHIMOTO KAZUHITO
IPC分类号： B05D7/04 , B05D7/24 , B32B27/00 , B32B27/04 , B32B27/12 , B32B27/30
摘要： PROBLEM TO BE SOLVED: To obtain a film structural material in which a surface contamination scarcely occurs by forming at least one surface layer of the structural material containing fiber cloth made of glass fiber and fluorine resin as main materials as a fluorine resin layer exposed at the photocatalytic titanium oxide fine particles. SOLUTION: The method for manufacturing a film structural material comprises the steps of repeating the steps of forming silicone resin layers 2 on both side surfaces of a glass fiber cloth 1, coating the surface of the layer 2 with dispersion containing PTFE powder, drying it and baking it to form a PTFE layer 3, and coating the surface of the layer 3 with dispersion containing the PTFE powder and glass beads. The method further comprises the steps of repeating the steps of coating the surface of the layer 4 with dispersion containing the PTFE powder and photocatalytic titanium oxide fine particles, drying it and baking it, and forming the PTFE layer 5 exposed at the fine particles.

30. 发明专利

JPH0957887A INTERMEDIATE SHEET 失效
公开(公告)号：JPH0957887A
公开(公告)日：1997-03-04
申请号：JP22178595
申请日：1995-08-30
申请人： NITTO DENKO CORP
发明人： DOMOTO TADANORI
IPC分类号： B32B5/18 , B32B27/30
摘要： PROBLEM TO BE SOLVED: To form a liquid crystal panel having a precise gap between substrates in a high yield and to improve the durability by constituting an intermediate sheet of a heat resistant plastic layer and a polytetrafluoroethylene porous layer which is formed at least on one side of the plastic layer and has surface resistance of a specified value or less. SOLUTION: An intermediate sheet is composed of a heat resistant plastic layer and a polytetrafluoroethylene(PTFE) porous layer which is formed at least on one side of the plastic layer and has surface resistance 10 Ω/square or less. A preferable material of the plastic layer is polyimide, para position aromatic polyamide, polyether ketone, etc. The thickness of the PTFE porous layer is about 5-30μm, the porosity is about 70-90%, and the diameter of the pores is about 0.5-30μm. The sheet is prepared by a process in which, for example, the surface of the heat resistant plastic sheet is coated with fluororesin dispersed liquid, undurned fluororesin layer is formed by drying, a PTFE porous sheet is laid on the fluororesin layer, and the sheet is pressed and heated.

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