Patents Assigned to Toagosei Chemical Industry
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Patent number: 4764396Abstract: A method for preventing aluminum corrosion in electronic parts which comprises adding lead hydroxy apatite and/or cadmium hydroxy apatite to constituents of the electronic parts through which halogen ions pass, so that said ions may be captured by said apatites in said constituents.Type: GrantFiled: September 24, 1987Date of Patent: August 16, 1988Assignee: Toagosei Chemical Industry Co., Ltd.Inventors: Hideki Kato, Noriyuki Yamamoto
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Patent number: 4759991Abstract: A magnetic recording medium having a modified surface, consisting essentially of (a) a substrate, (b) a ferromagnetic metal thin film formed on one side of the substrate by a vacuum deposition method, an ion plating method, a sputtering method or a plating method and (c) a lubricating coating layer formed on the thin film or on the back of the substrate or on both of them. The recording medium has an improved running stability, durability and corrosion resistance.Type: GrantFiled: March 1, 1985Date of Patent: July 26, 1988Assignees: Toagosei Chemical Industry Co., Ltd., Olympus Optical Co., Ltd.Inventors: Toshiyuki Kanno, Hitoshi Watanabe, Yasutaro Yasuda, Shiro Kojima, Hiroyuki Kato, Takashi Tsuda, Kishiro Azuma
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Patent number: 4677225Abstract: A process for producing acrylic acid or methacrylic acid by reacting acetic acid or propionic acid with formaldehyde in a gas phase is described, characterized by carrying out the reaction in the presence of a solid catalyst containing at least one of boron oxide or phosphorus oxide and having an acid site of an acid strength, pKa.ltoreq.-3.0. The solid catalyst is of high activity and is satisfactory in both selectivity and conversion and, furthermore, its high selectivity can be maintained for long periods of time. Thus the desired product, acrylic acid or methacrylic acid, can be produced in high yield.Type: GrantFiled: May 21, 1985Date of Patent: June 30, 1987Assignee: Toagosei Chemical Industry Co., Ltd.Inventors: Hiroshi Niizuma, Toshiro Miki, Shiro Kojima, Kishiro Azuma, Hiroyuki Kato, Yuichi Murakami, Tsutomu Ito
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Patent number: 4668719Abstract: This invention provides an insulating protective material effective for protection of electronic and electric devices such as electronics elements. This insulating protective material contains at least one hydrous oxide of a metal which has ion exchange properties together with a fusion bonding component such as low-melting glass, epoxy resin, phenolic resin, silicone resin, etc. and a filler such as fused silica, .beta.-eucryptite, glass fiber, glass beads, etc.Said specific hydrous oxide can be used together with a sulfur-containing organic high molecular weight compound.The hydrous oxides used in protective materials as a sealing material for electronic and electric devices can capture an ionic impurity eluted from the components of the protective material and fix it therein thereby to provide stable electronic materials excellent in performance.Type: GrantFiled: September 23, 1985Date of Patent: May 26, 1987Assignee: Toagosei Chemical Industry Co., Ltd.Inventors: Hideki Kato, Noriyuki Yamamoto, Takahisa Ogasawara, deceased, Masami Asai, deceased
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Patent number: 4657817Abstract: There is provided a magnetic recording material produced by coating on a support a magnetic coating composition which contains as main components a magnetic powder and a binder, the binder comprising an urethane acrylate synthesized using a polyester polyol having a particular structure, and by irradiating the resulting magnetic coat with electron beams to harden it. The polyester polyol contains polyhydric alcohol component, 50 mole % or more of which is a dihydric alcohol selected from the class (A) described below, and/or polybasic acid component, 50 mole % or more of which is a dibasic acid selected from the class (B) described below. The urethane acrylate is synthesized under such a condition that it may have two or more of (meth)acryloyl groups per molecule. Thus, improvements in electromagnetic properties and in durability are attained.Type: GrantFiled: December 6, 1983Date of Patent: April 14, 1987Assignees: Fuji Photo Film Co., Ltd., Toagosei Chemical Industry Co., Ltd.Inventors: Tsutomu Okita, Kyoichi Naruo, Nobuo Tsuji, Teruo Nakagawa, Kiyoshi Murase, Takahisa Ogasawara
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Patent number: 4560461Abstract: In electrolytic cell for use in electrolysis of aqueous alkali metal chloride solutions, which comprises one or more vertical expandable anodes, one or more vertical cathodes and one or more cation-exchange membranes each located between a pair of the opposite anode and cathode plates; an improvement is now provided, which is lying in the newly devised cathode structure comprising a vertical cathode, a flexible and foraminate metal mesh of low hydrogen-overvoltage removably mounted on one side of said cathode, a hydraulically permeable and hydrogen gas bubbles-impenetrable microporous film removably mounted on said metal mesh, and a cation-exchange membrane removably mounted on said microporous film, in such way that the expandable anode as located adjacent to said cation-exchange membrane is able to exert a resilient force to push the cation-exchange membrane against the microporous film, the metal mesh and the cathode plate; and to bring the latter elements into close contact with each other.Type: GrantFiled: April 8, 1982Date of Patent: December 24, 1985Assignee: Toagosei Chemical Industry Co., Ltd.Inventors: Toshimasa Okazaki, Shuta Nakagawa
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Patent number: 4425473Abstract: Certain new derivatives of 2,6,7-trioxabicyclo[2,2,2]octane are found to undergo cationic ring-opening polymerization with positive expansion in volume or with no substantial change in volume, in contrast with known polymerizable compounds such as epoxides which present considerable shrinkage in volume on polymerization. These new bicyclic orthoester compounds can be prepared in a facile way known per se.Type: GrantFiled: February 2, 1981Date of Patent: January 10, 1984Assignee: Toagosei Chemical Industry Co., Ltd.Inventors: Kiyokazu Mizutani, Takahisa Ogasawara
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Patent number: 4393183Abstract: An adhesive composition comprising 2-cyanoacrylate and at least one compound selected from the group consisting of R.sub.1 --CH.sub.2 OH, ##STR1## R.sub.1 --CHO, R.sub.1 --CHO hydrate, ##STR2## pentafluorophenol, hexachloroacetone, hexachloroacetone hydrate, chloral and chloral hydrate as cationic-polymerization inhibitor. In the above formulas, R.sub.1 is a fluorinated alkyl or aryl group having up to 12 carbon atoms, and R.sub.2 and R.sub.3 are fluorinated or non-fluorinated alkyl or aryl groups having up to 12 carbon atoms. The above adhesive composition has an excellent storage stability and an improved bonding strength.Type: GrantFiled: December 11, 1981Date of Patent: July 12, 1983Assignee: Toagosei Chemical Industry Co., Ltd.Inventors: Kaoru Kimura, Kyoji Sugiura
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Patent number: 4370387Abstract: A precoated steel sheet and a process for production thereof is provided which comprises coating a resin composition comprising mainly an acryloxyloxy- or methacryloyloxy-terminated polyester on the surface of a steel sheet, said acryloyloxy- or methacryloyloxy-terminated polyester being prepared by reacting a hydroxy-terminated polyester comprising (a) a dicarboxylic acid unit containing about 10 to about 80 mol % of a terephthalic acid unit and (b) dihydric alcohol unit containing about 30 mol % or more of a dihydric alcohol unit containing 3 or more carbon atoms, and having a number average molecular weight of about 400 to about 5,000, with acrylic acid or methacrylic acid, and curing the thus-coated resin composition by irradiating the sheet with an electron beam.Type: GrantFiled: March 19, 1981Date of Patent: January 25, 1983Assignees: Toagosei Chemical Industry Co., Ltd., Nippon Steel CorporationInventors: Nagaharu Ueno, Joji Oka, Hidejiro Asano, Takahisa Ogasawara, Kiyokazu Mizutani, Yoshiitsu Tominaga
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Patent number: 4364876Abstract: 2-Cyanoacrylate represented by the formula: ##STR1## wherein R.sup.1 is a 1,2-alkylene group having 2-4 carbon atoms; R.sup.2 is an alkylene group having 2-4 carbon atoms and R.sup.3 is an alkyl group having 1-6 carbon atoms, said 2-cyanoarylates can be anion-polymerized with a slight quantity of water similarly to hitherto known 2-cyanoacrylates, and the resulting cured product is richer in flexibility than the hitherto known ones. Therefore, it is not only useful as an instant-setting adhesive for metals, plastics, wood and ceramics but also is particularly useful as an adhesive for flexible materials such as rubber, leather, cloth and fiber. Further, said 2-cyanoacrylates are also useful as a coating material and a molding material.Type: GrantFiled: March 16, 1981Date of Patent: December 21, 1982Assignee: Toagosei Chemical Industry Co., Ltd.Inventors: Kaoru Kimura, Kazuyuki Sakabe
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Patent number: 4332731Abstract: Novel 2-methylene-1,4,6-trioxaspiro[4,6]undecane has both cationic polymerizability and radical ring-opening polymerizability, and it can be produced by reacting a 2-halomethyl-1,4,6-trioxaspiro[4,6]undecane with an alkali to effect dehydrohalogenation.Type: GrantFiled: September 17, 1980Date of Patent: June 1, 1982Assignee: Toagosei Chemical Industry Co., Ltd.Inventors: Takeshi Endo, Takahisa Ogasawara, Kiyokazu Mizutani
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Patent number: 4330643Abstract: A process for production of an acryloyloxy- or methacryloyloxy-terminated polyester is described, which comprises reacting a specific hydroxy-terminated polyester with acrylic acid or methacrylic acid, wherein the hydroxy-terminated polyester comprises (a) a dicarboxylic acid unit comprising about 10 to about 80 mol % of a terephthalic acid unit and about 90 to about 20 mol % of another dicarboxylic acid unit and (b) a dihydric alcohol unit containing about 30 mol % or more of a dihydric alcohol unit containing 3 or more carbon atoms and having a number average molecular weight of about 400 to about 5,000.Type: GrantFiled: February 23, 1981Date of Patent: May 18, 1982Assignee: Toagosei Chemical Industry Co., Ltd.Inventors: Takahisa Ogasawara, Kiyokazu Mizutani
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Patent number: 4321180Abstract: An adhesive composition consisting essentially of (A) an alkyloxyalkyl 2-cyanoacrylate represented by the formula, ##STR1## wherein R is an alkylene group having 2 to 4 carbon atoms and R' is an alkyl group having 2 to 6 carbon atoms, or tetrahydrofurfuryl 2-cyanoacrylate, (B) 300 to 2,000 ppm. of water, (C) a radical-polymerization inhibitor, and (D) an anionic-polymerization inhibitor. This adhesive composition is useful as an instant-setting adhesive for metals, plastics, rubbers, glass, wood and the like, is excellent in instant-setting properties, bond strength and storage stability, and neither emits an irritating odor nor causes whitening of the adherend surface.Type: GrantFiled: November 21, 1980Date of Patent: March 23, 1982Assignee: Toagosei Chemical Industry Co., Ltd.Inventors: Kaora Kimura, Kyoji Sugiura
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Patent number: 4196271Abstract: An adhesive composition comprising a 2-cyanoacrylate and at least one member selected from the group consisting of substituted or unsubstituted aliphatic carboxylic acids having three or more carboxyl groups, anhydrides thereof, partial esters thereof, aromatic polycarboxylic acids having three or more carboxyl groups and anhydrides thereof. This composition has a high impact strength, is suitable for bonding metallic substrates to one another and is also excellent in resistance to heat, weather, and water.Type: GrantFiled: December 22, 1976Date of Patent: April 1, 1980Assignee: Toagosei Chemical Industry Co., Ltd.Inventors: Akira Yamada, Kaoru Kimura
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Patent number: 4171416Abstract: A fast-setting .alpha.-cyanoacrylate-type adhesive composition having good storage stability comprising an .alpha.-cyanoacrylate and about 0.1 ppm or more of at least one macrocyclic polyether compound or an analogue thereof, such as 18-crown-6 or 15-crown-5.Type: GrantFiled: April 19, 1978Date of Patent: October 16, 1979Assignee: Toagosei Chemical Industry Co., Ltd.Inventors: Akira Motegi, Eiji Isowa, Kaoru Kimura
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Patent number: 4170585Abstract: An adhesive composition comprising an .alpha.-cyanoacrylate and about 0.0001% by weight to about 20% by weight, based on the weight of the adhesive composition, of at least one compound selected from the group consisting of(1) polyethylene glycols having a degree of polymerization of at least 3, and(2) non-ionic surface active agents having a poly(ethyleneoxy) moiety therein with the poly(ethyleneoxy) moiety having a degree of polymerization of at least 3.Type: GrantFiled: August 7, 1978Date of Patent: October 9, 1979Assignee: Toagosei Chemical Industry Co., Ltd.Inventors: Akira Motegi, Kaoru Kimura
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Patent number: 4169006Abstract: A method for bonding steel plates with a polyamide adhesive, comprising applying a composition comprising (1) a polyester resin comprising the reaction product of (a) a polycarboxylic acid component comprising at least one of a polycarboxylic acid, an anhydride thereof, an ester thereof or a mixture thereof with (b) a polyhydric alcohol component comprising at least one polyhydric alcohol or a mixture thereof, with at least some of one of the polycarboxylic acid component and the polyhydric alcohol component being trivalent or higher, and (2) a bisphenol A-type epoxy resin, on a steel plate; baking the coating by heating; juxtaposing the coated steel plates to be bonded with a polyamide adhesive therebetween; and bonding the steel plates with the polyamide adhesive, a primer composition for use therein and a polyester resin for use in the primer composition.Type: GrantFiled: June 22, 1977Date of Patent: September 25, 1979Assignee: Toagosei Chemical Industry Co., Ltd.Inventors: Takashi Matsubara, Yoshiaki Fujimoto, Yushi Ishibashi
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Patent number: 4147682Abstract: An additive composition for use in papermaking comprises a water-soluble polymer having in its molecule --COOH groups and/or --SO.sub.3 H groups, polyaluminum chloride and an aqueous solvent. Because of formation of a kind of crosslinking structure between the water-soluble polymer molecules through the polyaluminum chloride, the above composition exerts an effect of enhancing the paper strength when used alone and an effect of enhancing both the sizing effect and the paper strength when used together with a sizing agent. The composition further increases the paper strength when used in combination with a conventional paper-strength improver.Type: GrantFiled: December 7, 1977Date of Patent: April 3, 1979Assignees: Toagosei Chemical Industry Co., Ltd., Osakagodo Company Ltd.Inventors: Akira Yada, Isamu Iijima, Jo Itakura, Saburo Fujikura
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Patent number: 4146152Abstract: Disclosed herein is an opener for an adhesive container with a nozzle, which comprises a sharp member capable of making a hole in the closed end portion of the nozzle provided on the adhesive container body, the sharp member having a tapered sharp section which is used to make the hole in the closed end portion of the nozzle.Type: GrantFiled: August 29, 1977Date of Patent: March 27, 1979Assignee: Toagosei Chemical Industry Co. Ltd.Inventors: Shinichi Ogawa, Youichi Hirono
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Patent number: D269531Type: GrantFiled: November 25, 1980Date of Patent: June 28, 1983Assignee: Toagosei Chemical Industry Co., Ltd.Inventor: Tsuneo Ando