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1. 发明专利

JPH07304888A METHOD FOR MAKING POROUS MATERIAL MADE OF FLUORORESIN HYDROPHILIC 失效
公开(公告)号：JPH07304888A
公开(公告)日：1995-11-21
申请号：JP9613794
申请日：1994-05-10
申请人： KURASHIKI BOSEKI KK , JAPAN ATOMIC ENERGY RES INST , HOSHASEN SHIYOUSHIYA SHINKO KY
发明人： NISHII MASANOBU , KASAI SHUNICHI , SUGIMOTO SHUNICHI , TANAKA TADAKURO , SANO MITSURU
IPC分类号： C08J7/00 , C08J9/36 , C08J9/40
摘要： PURPOSE:To make the surface of a porous material made of a fluororein sufficiently hydrophilic to the inner part of pores, by irradiating the porous material made of a fluororesin immersed in an aqueous solution of hydrogen peroxide or an aqueous solution of a water-soluble organic solvent with laser beam of ultraviolet light and not requiring washing after the treatment. CONSTITUTION:A porous material made of a fluororesin (e.g. polytetraethylene) is immersed in an aqueous solution of hydrogen peroxide or an aqueous solution of a water-soluble organic solvent (e.g. ethanol) with 50-150 deg.C boiling point, having 0.05-5.0 absorbance (log(epsilon/mol dm cm ) at wavelength of used ultraviolet laser beam at 40-70 deg.C for about 20 hours, sufficiently impregnated with the solution and irradiated with ultraviolet laser beam at 190-400nm wavelength of excimer laser beam to give the objective porous substance made of a fluororesin, slightly eluting, not requiring washing after hydrophilic treatment, suitable for filtration of an aqueous solution, also useful as an organism-related material for dialysis membrane, sufficiently made hydrophilic to the interior of pores on the surface.

2. 发明专利

JPH07207049A MODIFICATION OF SURFACE OF FLUORORESIN MOLDING 失效
公开(公告)号：JPH07207049A
公开(公告)日：1995-08-08
申请号：JP24603894
申请日：1994-10-12
申请人： KURASHIKI BOSEKI KK , JAPAN ATOMIC ENERGY RES INST , HOSHASEN SHIYOUSHIYA SHINKO KY
发明人： NISHII MASANOBU , SHIMIZU YUICHI , KASAI SHUNICHI , SUGIMOTO SHUNICHI , ENDO MASAO , NAGASE TOMOHIRO
IPC分类号： B05D3/06 , B05D3/10 , B05D7/02 , C08J7/00
摘要： PURPOSE:To impart high adhesiveness, high wettability, etc., to the surface of a fluororesin by irradiating the surface of the molding with ultraviolet laser beams in the presence of an ultraviolet-abosrbong compound and a fluorine- containing surfactant. CONSTITUTION:The surface of a fluororesin molding is coated with an aqueous solution containpng 0.05-2wt.% ultraviolet absorbing compound and 0.05-10wt.% fluorine-containing surfactant and dried by heating to 60-150 deg.C. This surface is then irradiated with ultraviolet laser beams under conditions including a fluence of 50mJ/cm /pulse or above, an incident energy of 0.2-2.0-mJ/cm and a shot number of 1-20.

3. 发明专利

JPH06248097A SURFACE MODIFICATION OF FLUORORESIN 失效
公开(公告)号：JPH06248097A
公开(公告)日：1994-09-06
申请号：JP3794393
申请日：1993-02-26
申请人： KURASHIKI BOSEKI KK , JAPAN ATOMIC ENERGY RES INST , HOSHASEN SHIYOUSHIYA SHINKO KY
发明人： NISHII MASANOBU , SHIMIZU YUICHI , KASAI SHUNICHI , SUGIMOTO SHUNICHI , ENDO MASAO , NAGASE TOMOHIRO
IPC分类号： C08J7/00 , B29C35/08 , B29C59/14 , B29C59/16
摘要： PURPOSE:To remarkably improve the adhesivity of the surface of a fluororesin without deteriorating its excellent heat-resistance, chemical resistance, etc., by treating the surface of a fluororesin with low-temperature plasma and irradiating the plasma-treated surface with excimer laser light in the presence of an ultraviolet absorbing solvent. CONSTITUTION:The surface of a fluororesin such as polytetrafluoroethylene is subjected to low-temperature plasma treatment e.g. by sputtering etching method. The treated surface is irradiated with excimer laser light (preferably KrF excimer laser light having wavelength of 248nm) in the presence of an ultraviolet absorbing solvent (preferably hexane, benzene, etc.). In the case of using the KrF excimer laser light, the irradiation is preferably carried out at a fluence of 100-500mJ/cm /pulse, an incident light energy of 0.2-2J/cm and a shot number of l-20.

4. 发明专利

JPH06172560A METHOD FOR MODIFYING SURFACE OF FLUORORESIN WITH ULTRAVIOLET LASER BEAM 失效
公开(公告)号：JPH06172560A
公开(公告)日：1994-06-21
申请号：JP32782292
申请日：1992-12-08
申请人： KURASHIKI BOSEKI KK , JAPAN ATOMIC ENERGY RES INST , HOSHASEN SHIYOUSHIYA SHINKO KY
发明人： NISHII MASANOBU , SHIMIZU YUICHI , KASAI SHUNICHI , SUGIMOTO SHUNICHI , TANAKA TADAKURO , EGUCHI YOSUKE
IPC分类号： C08J7/00 , B01D67/00 , B01D71/32 , B01D71/36 , C08J7/06
摘要： PURPOSE:To improve the adhesiveness, wettability, printability, coatability, etc., of the surface of a fluororesin without detriment to the heat resistance, electrical characteristics, etc., by irradiating the surface with an ultraviolet laser beam in the presence of an inorg. silicon compd. CONSTITUTION:The surface of a fluororesin such as polytetrafluoroethylene or a tetrafluoroethylene-perfluoroalkoxyethylene copolymer is modified by irradiating the surface with an ultraviolet laser beam in the presence of an inorg. silicon compd. such as sodium silicate, potassium silicate, silicon dioxide, each used as an aq. soln., an aq. dispersion, etc. A KrF excimer laser beam and an ArF excimer laser beam are suitable as the ultraviolet laser beam. A molded fluororesin article having the surface modified as above is suitable for printing, coating, and making a composite material with other resins or inorg. materials.

5. 发明专利

JPH07118421A HYDROPHILIC FLUORORESIN MOLDING 失效
公开(公告)号：JPH07118421A
公开(公告)日：1995-05-09
申请号：JP26596493
申请日：1993-10-25
申请人： GUNZE KK , JAPAN ATOMIC ENERGY RES INST , HOSHASEN SHIYOUSHIYA SHINKO KY
发明人： OKADA ATSUSHI , SHIMIZU YUICHI , KASAI SHUNICHI , NISHII MASANOBU , SUGIMOTO SHUNICHI
IPC分类号： C08J7/00 , B29C35/08 , B29C59/16
摘要： PURPOSE:To provide a molding excellent in hydrophilicity and useful for anti- thrombogenic artificial blood vessels, artificial hearts, contact lenses, etc., by applying UV laser light having a specific wavelength to at least a part of a fluororesin molding. CONSTITUTION:This molding is produced by irradiating (A) at least a part of a fluororesin molding with (C) UV laser light having a wavelength of

6. 发明专利

JPH06240026A HYDROPHILIC FLUORORESIN MOLDING 失效
公开(公告)号：JPH06240026A
公开(公告)日：1994-08-30
申请号：JP2636793
申请日：1993-02-16
申请人： GUNZE KK , JAPAN ATOMIC ENERGY RES INST , HOSHASEN SHIYOUSHIYA SHINKO KY
发明人： OKADA ATSUSHI , SHIMIZU YUICHI , KASAI SHUNICHI , NISHII MASANOBU , SUGIMOTO SHUNICHI
IPC分类号： C08J7/00 , B29C35/08 , B29C59/16 , C08J3/28 , C08J7/02 , C08J7/12 , C08J7/14
摘要： PURPOSE:To provide a hydrophilic fluororesin molding by modifying the surface of a fluororesin molding to render it hydrophilic. CONSTITUTION:At least a part of a fluororesin molding is irradiated with excimer laser beams while kept in contact with an aqueous solution containing at least one compound selected from a compound having a group II metal element, a carboxylic acid, a water-soluble high-molecular compound, carbon monoxide and carbon dioxide to modify the surface of at least the part of the fluororesin molding to render it hydrophilic. The molding thus modified is suitable for, e.g. an excellent antithrombotic artificial blood vessel and a contact lens material free from discoloration due to modification, and its application in a wide range can also be expected by utilizing the functionality thereof.

7. 发明专利

JPH05125208A METHOD OF MODIFYING SURFACE OF FLUORORESIN WITH LASER BEAM 失效
公开(公告)号：JPH05125208A
公开(公告)日：1993-05-21
申请号：JP28999991
申请日：1991-11-06
申请人： JAPAN ATOMIC ENERGY RES INST , KURASHIKI BOSEKI KK
发明人： NISHII MASANOBU , SUZUKI NOBUTAKE , SUGIMOTO SHUNICHI , HIRASHIMA YOSHIRO , ENDO MASAO , NAGASE TOMOHIRO
IPC分类号： C08J7/00 , B29C35/08 , B29C59/16 , C08L27/06 , C08L27/12 , C08L87/00
摘要： PURPOSE:To enable a fluororesin excellent in such properties as heat resistance, chemical resistance, and electrical characteristics to be coated with, e.g. an adhesive, coating composition, or ink and to be united with other material, by activating the inactive surface of the resin. CONSTITUTION:A fluororesin is mixed with a light-absorbing, heat-resistant substance which consists of a wholly aromatic polyester, a polyetheretherketone, a polyimide, a polyetherketone, or the like and withstands a molding temperature for the fluororesin. This mixture is molded and the surface of the molding is then irradiated with a laser beam to modify the surface.

8. 发明专利

JP2000290407A HYDROPHILIZATION OF POROUS MATERIAL MADE OF FLUORORESIN 失效
公开(公告)号：JP2000290407A
公开(公告)日：2000-10-17
申请号：JP9647399
申请日：1999-04-02
申请人： KURASHIKI BOSEKI KK , JAPAN ATOMIC ENERGY RES INST
发明人： NISHII MASANOBU , KASAI SHUNICHI , TANAKA TADAKURO , MIYASOTO SEIKI
IPC分类号： C08J7/00
摘要： PROBLEM TO BE SOLVED: To sufficiently hydrophilize even the interior of micropores on the surface of a porous material by preimpregnating the porous material made of a fluororesin with a water-soluble solvent having a low surface tension, replacing the impregnated solvent with an aqueous hydrogen peroxide and an aqueous solution containing a specific amount of a water-soluble organic solvent and then irradiating the resultant substrate with an ultraviolet laser beam. SOLUTION: (A) A porous material made of a fluororesin is impregnated with (B) a water-soluble solvent having a low surface tension and the water-soluble solvent is then replaced with an aqueous hydrogen peroxide and an aqueous solution containing 0.5-30 wt.% of a water-soluble organic solvent (preferably the one having 50-150 deg.C boiling point, especially ethanol) and subsequently irradiated with an ultraviolet laser beam (preferably at 190-400 nm wavelength). Thereby, the component A is hydrophilized. The absorbance of the component C (log(ε/mol-1dm3cm-1)) is preferably 0.05-5.0 at the wavelength of the ultraviolet laser beam used. The impregnating temperature of the component C is preferably 40-70 deg.C. The resultant hydrophilic porous material can suitably used for filtration, etc.

9. 发明专利

JPH05339396A 失效
公开(公告)号：JPH05339396A
公开(公告)日：1993-12-21
申请号：JP14559592
申请日：1992-06-05
申请人： JAPAN ATOMIC ENERGY RES INST , KURASHIKI BOSEKI KK
发明人： NISHII MASANOBU , SUZUKI NOBUTAKE , SUGIMOTO SHUNICHI , HIRASHIMA YOSHIRO , ENDO MASAO , NAGASE TOMOHIRO
IPC分类号： C08J7/00 , B29C35/08 , B29C59/16
摘要： PURPOSE:To provide a new method for modifying a surface, by which the adhesiveness and wettability of fluororesin can greatly be improved. CONSTITUTION:A method for modifying the surface of fluororesin, wherein the surface of a fluororesin containing a light-absorptive substance is irradiated with laser beams. The light-absorptive substance is a heat-resistant substance which withstands the molding temperature of fluororesin. A fluororesin mixed with the heat-resistant substance is molded, and the surface of the molding is irradiated with laser beams. The light-absorptive substance preferably comprises a carbon-group element or its compound, a metal oxide or sulfide, or a mixture or analog of these.

10. 发明专利

JPH0340814A PRODUCTION OF SILICON CARBIDE-BASED FIBER EXCELLENT IN HIGH-TEMPERATURE CHARACTERISTIC 失效
公开(公告)号：JPH0340814A
公开(公告)日：1991-02-21
申请号：JP17373089
申请日：1989-07-05
申请人： JAPAN ATOMIC ENERGY RES INST
发明人： SEGUCHI TADAO , NISHII MASANOBU , OKAMURA KIYOTO , SATO MITSUHIKO
IPC分类号： C04B35/571 , C01B31/36 , C04B35/56 , D01F9/10
摘要： PURPOSE:To obtain the subject fiber, excellent in heat and oxidation resistance and high-temperature characteristics with hardly any impurity oxygen by spinning a polycarbosilane, etc., then exposing the resultant fiber to ionizing radiation and calcining the aforementioned fiber in a nonoxidizing atmosphere. CONSTITUTION:An organosilicon-based polymer (e.g. polycarbosilane) having an Si-C skeleton is melt spun in an inert gas, e.g. N2, to provide organic polymer fiber, which is then placed in an irradiating vessel for ionizing radiation equipped with a high-temperature heater, exposed to radiation, such as electron rays, and calcined at 500-2000 deg.C in an inert gas, etc., to afford the objective fiber.

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