摘要:
It is intended to provide a method of producing a hollow construct, which may be in various shapes such as a fiber or a film as well as in various sizes and has chemical resistance, made of a fluorinated hydrocarbon polymer, a fluorinated carbon polymer or a polymer carrying a nitrogen-containing group, a silicon-containing group, an oxygen-containing group, a phosphorus-containing group or a sulfur-containing group having been introduced into the above-described polymer; and a hollow construct obtained by this method. The method of producing a hollow construct as described above is characterized by comprising the fluorination step wherein a construct made of a hydrocarbon polymer or a polymer carrying a nitrogen-containing group, a silicon-containing group, an oxygen-containing group, a phosphorus-containing group or a sulfur-containing group having been introduced into the above-described polymer is brought into contact with a treating gas containing fluorine under definite conditions and thus the treating gas is allowed to penetrate from the outer surface of the construct toward the inside thereof to thereby fluorinate the construct excluding the core part, and the removal step wherein the core part having been not fluorinated as described above is removed.
摘要:
It is intended to provide a method of producing a hollow construct, which may be in various shapes such as a fiber or a film as well as in various sizes and has chemical resistance, made of a fluorinated hydrocarbon polymer, a fluorinated carbon polymer or a polymer carrying a nitrogen-containing group, a silicon-containing group, an oxygen-containing group, a phosphorus-containing group or a sulfur-containing group having been introduced into the above-described polymer; and a hollow construct obtained by this method. The method of producing a hollow construct as described above is characterized by comprising the fluorination step wherein a construct made of a hydrocarbon polymer or a polymer carrying a nitrogen-containing group, a silicon-containing group, an oxygen-containing group, a phosphorus-containing group or a sulfur-containing group having been introduced into the above-described polymer is brought into contact with a treating gas containing fluorine under definite conditions and thus the treating gas is allowed to penetrate from the outer surface of the construct toward the inside thereof to thereby fluorinate the construct excluding the core part, and the removal step wherein the core part having been not fluorinated as described above is removed.
摘要:
An electrode material for an electrochemical capacitor having a large capacity, having a titanium oxide compound such as titanium oxide, hydrated titanium oxide or their hydrogenated products, and at least one oxidizable and reducible metal element contained in the titanium oxide compound.
摘要:
A manufacturing method of circuit modules comprising steps of melting a solder on a land by an energy of irradiating laser beam, and pressing an external electrode of an electronic component to a melted solder before the melted solder hardens. This method is capable of connecting the electrode of the component to the land of the substrate using the solder sufficiently heated and melted. A manufacturing apparatus of circuit modules comprises an adsorbing nozzle which adsorbs an electronic component and mounts it on a substrate, an optical system which projects laser beams to a solder preliminarily applied to an electrode of a substrates, and a control device which controls a component mounting and a laser beam irradiation so that the electrode of the electronic component is pressed to the solder melted by an energy of a irradiating laser beam before the melted solder hardens. This apparatus is capable of connecting the component with the above laser beam while controlling the component mounting and the laser beam irradiation.
摘要:
Processing along one circular path is performed by irradiating a laser beam to a ceramic green sheet attached on an outer peripheral surface of a rotating drum, and the processing path is changed by moving at least one of the rotating drum and a beam irradiated position through a predetermined distance in the direction of drum centerline each time the processing on one circular path is completed. If the laser beam is intermittently irradiated to the ceramic green sheet, a matrix of through holes or concave portions can be easily formed in the ceramic green sheet.
摘要:
A press working apparatus is provided with a first working unit and a second working unit 14. In the first working unit, a first stage is performed for forming a half-blanked portion 15 with a projecting shape at a region where a through hole P is to be formed in a sheet W. In the second working unit 14, a second stage S2 is performed in which the half-blanked portion 15 is blanked from the sheet W by a second punch 26 and a second die 23. Also in the second stage S2, when a blanked body is blanked from the sheet W, shaving work is performed with respect to a side wall surface Pa on a region of the sheet W where the blanked body has been blanked.
摘要:
An electrophotographic toner is disclosed which comprises a colorant and a binder resin, in which the binder resin is present as a vinyl resin whose gel content ranges from 15 to 25% by weight and whose tetrahydrofuran-soluble content has a number-average molecular weight (Mn) ranging from 5,000 to 12,000, a weight-average molecular weight (Mw) ranging from 10.times.10.sup.4 to 40.times.10.sup.4 and a higher Mw peak in the range of from 9.times.10.sup.5 to 18.times.10.sup.5. The toner exhibits improved chargeability and improved powder fluidity as well as improved fixing properties and improved offset resistance. A process for producing the toner is also disclosed.
摘要:
An electrode material for an electrochemical capacitor having a large capacity, having a titanium oxide compound such as titanium oxide, hydrated titanium oxide or their hydrogenated products, and at least one oxidizable and reducible metal element contained in the titanium oxide compound.
摘要:
Circuit modules are made by melting solder on a land by irradiating the solder with a laser beam, and then pressing an external electrode of an electronic component to the melted solder before the melted solder hardens.
摘要:
A non-magnetic one-component developer suitable for use in a contact or non-contact development system. The developer comprises 100 parts by weight of colored fine particles, which comprises a binder resin and a colorant, and 0.3-10 parts by weight of at least one fine inorganic powder selected from (i) a fine inorganic powder (I) obtained by subjecting a fine inorganic powder having an average particle size of 0.1-10 .mu.m and a heating loss (under drying conditions of 150.degree. C. and 1 hour) of at most 1 wt.% to a hydrophobicity-imparting treatment with a silicone oil and (ii) a fine inorganic powder (II) obtained by subjecting a fine inorganic powder having an average particle size of 0.1-10 .mu.m to a two-step hydrophobicity-imparting treatment with at least one compound selected from silane coupling agents and silazane compounds and then further with a silicone oil.