Patents by Inventor Osamu Kaieda
Osamu Kaieda has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 6392084Abstract: A method for the production of an aromatic fluorine compound is provided which is capable of preventing the occurrence of benzoic acid fluorides during the course of a halogenation exchange reaction or allowing removal of the benzoic acid fluorides formed at all. A method for the production of an organic fluorine compound is disclosed which comprises preventing the occurrence of acid fluorides of an aromatic compound during the production of the organic fluorine compound by the reaction of an organic chlorine or bromine compound with a fluorinating agent in benzonitrile as a solvent or allowing removal of the acid fluorides formed.Type: GrantFiled: August 25, 1998Date of Patent: May 21, 2002Assignee: Nippon Shokubai Co., Ltd.Inventors: Osamu Kaieda, Koichi Hirota
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Patent number: 6136488Abstract: A flash fixing toner comprising a binding resin, a coloring agent, and an infrared absorbent, the infrared absorbent having the largest absorption wavelength in the range of 750-1100 nm, and the infrared absorbent being solved in or being finely dispersed in the binding resin.Type: GrantFiled: July 16, 1998Date of Patent: October 24, 2000Assignee: Nippon Shokubai Co., Ltd.Inventors: Mitsuo Kushino, Osamu Kaieda, Tatsuhito Matsuda, Makoto Matsumoto
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Patent number: 6069244Abstract: A phthalocyanine compound possessing an excellent ability to absorb near infrared ray, exhibiting excellent compatibility with resin, and excelling in such special qualities as heat resistance, light resistance, and resistance to weather conditions is provided. This phthalocyanine compound is represented by the following general formula (1) ##STR1## wherein Z.sub.2, Z.sub.3, Z.sub.6, Z.sub.7, Z.sub.10, Z.sub.11, Z.sub.14, and Z.sub.15 are independently SR.sup.1, OR.sup.2, or a fluorine atom, and at least one of them is for SR.sup.1 or OR.sup.2, Z.sub.1, Z.sub.4, Z.sub.5, Z.sub.8, Z.sub.9, Z.sub.12, Z.sub.13, and Z.sub.16 independently stand for NHR.sup.3, SR.sup.1, OR.sup.2, or a fluorine atom and at least one of them is NHR.sup.3, at least one of Z.sub.1 to Z.sub.16 is a fluorine atom or OR.sup.2, R.sup.1, R.sup.2, and R.sup.Type: GrantFiled: February 3, 1999Date of Patent: May 30, 2000Assignee: Nippon Shokubai Co., Ltd.Inventors: Kiyoshi Masuda, Osamu Kaieda
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Patent number: 6034236Abstract: A method for producing a novel phthalocyanine compound which excels in yield and purity, allows no introduction of a chlorine atom into the phthalocyanine skeleton, and possesses relatively bulky substituents is provided. This method is characterized by causing an orthophthalonitrile compound having a substituent exhibiting smaller .sigma..sub.p values than .sigma..sub.m values in the Hammett's rule to react with a metal oxide in the presence of a compound forming in the aqueous solution thereof at 25.degree. C. an acid or conjugate acid having a dissociation index pKa (the logarithmic value of the reciprocal of the dissociation constant of the acid or conjugate acid) of not more than 7.0.Type: GrantFiled: June 5, 1998Date of Patent: March 7, 2000Assignee: Nippon Shokubai Co., Ltd.Inventors: Minoru Aoki, Osamu Kaieda
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Patent number: 6034264Abstract: A nuclear halogenated aromatic compound possessing cyano groups is produced by a method using as a raw material an aromatic compound which possesses cyano groups and assumes a solid state at room temperature and subjecting the raw material to a procedure comprising a step of melting and transporting the compound by a means transport-melting, a step of vaporizing the compound, a step of mixing the compound with a halogen gas, and a step of causing the vapor of the compound to react with the halogen gas in vapor phase in the presence of a catalyst sequentially in the order mentioned, which comprises maintaining a content of a self-condensate of the aromatic compound possessing cyano groups which arise during the melting of the aromatic compound possessing cyano groups in a gas of the compound which reacts with the halogen gas to a level of not more than 2.5 mol % based on the compound.Type: GrantFiled: March 9, 1998Date of Patent: March 7, 2000Assignee: Nippon Shokubai Co., Ltd.Inventors: Osamu Kaieda, Koichi Hirota, Teruhisa Kajiwara, Norimasa Okuda, Hisakazu Shindo, Yoshiro Hanayama, Yujin Shoda, Toyohiko Kohno, deceased, Takashi Yodoshi, Masaru Awashima
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Patent number: 5998609Abstract: A phthalocyanine compound of a structural formula of phthalocyanine represented by the general formula (1): ##STR1## wherein 1 to 8 of a total 16 positions are substituted with a phenoxy group, the phenoxy group at either of the ortho positions is substituted with an aryl group which may be substituted, all the atoms in the aryl group and the substituents at the residual ortho positions excluding the hydrogen atoms assume a total atomic radius of not less than 6.0 .ANG., and a central atom group M contains a metal atom of not less than trivalence, a bromine-substituent of the compound, a phthalocyanine composition comprising the phthalocyanine compound and the bromine atom-containing phthalocyanine compound, and an optical recording medium containing it in a recording layer.Type: GrantFiled: June 12, 1998Date of Patent: December 7, 1999Assignee: Nippon Shokubai Co., Ltd.Inventors: Minoru Aoki, Osamu Kaieda, Kiyoshi Masuda, Yasunori Okumura
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Patent number: 5968688Abstract: A photosensitive resin coloring composition for use in a color filter containing a resin and a dye. The dye is manufactured with one member selected from the class consisting of a combination of (A)+(B) groups, a combination of (A)+(C) groups, a combination of (B)+(C) groups, and a combination of (A)+(B)+(C) groups, wherein (A) represents a group of quinizarine compounds, (B) represents a group of anthraquinone compounds, and (C) represents a group of phthalocyanine compounds.Type: GrantFiled: April 16, 1997Date of Patent: October 19, 1999Assignee: Nippon Shokubai Co., Ltd.Inventors: Kiyoshi Masuda, Minoru Aoki, Osamu Kaieda
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Patent number: 5817843Abstract: This invention is to provide a novel quinizarin compound which has a quinizarin structure represented by a following formula (1) having one to four of the 5, 6, 7, and 8 positions and at least either the 6 or 7 position formed of at least one member selected from the class consisting of secondary amino groups, alkylthio groups, and optionally substituted phenylthio groups, and having the remaining positions thereof formed of at least one member selected from the class consisting of hydrogen atom, halogen atoms, amino group, hydroxy group, alkoxy groups, and optionally substituted phenoxy groups, a method for the production thereof, and a dye, an electrophotographic grade color toner composition, a thermal-transfer recording sheet, an optical recording medium, an ink jet grade ink composition and a color filter severally comprising the quinizarin compound.Type: GrantFiled: October 16, 1996Date of Patent: October 6, 1998Assignee: Nippon Shokubai Co., Ltd.Inventors: Kiyoshi Masuda, Yukie Tamaura, Osamu Kaieda
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Patent number: 5789582Abstract: A nuclear halogenated aromatic compound possessing cyano groups is produced by a method using as a raw material an aromatic compound which possesses cyano groups and assumes a solid state at room temperature and subjecting the raw material to a procedure comprising a step of melting and transporting the compound by a means transport-melting, a step of vaporizing the compound, a step of mixing the compound with a halogen gas, and a step of causing the vapor of the compound to react with the halogen gas in vapor phase in the presence of a catalyst sequentially in the order mentioned, which comprises maintaining a content of a self-condensate of the aromatic compound possessing cyano groups which arise during the melting of the aromatic compound possessing cyano groups in a gas of the compound which reacts with the halogen gas to a level of not more than 2.5 mol % based on the compound.Type: GrantFiled: March 7, 1997Date of Patent: August 4, 1998Assignee: Nippon Shokubai Co., Ltd.Inventors: Osamu Kaieda, Koichi Hirota, Teruhisa Kajiwara, Norimasa Okuda, Hisakazu Shindo, Yoshiro Hanayama, Yujin Shoda, Toyohiko Kohno, deceased, Takashi Yodoshi, Masaru Awashima
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Patent number: 5763702Abstract: A benzene halide is produced with high purity at a high yield by heating a halogen-substituted benzene carboxylic acid in the presence of a basic catalyst in a solvent.Type: GrantFiled: September 25, 1996Date of Patent: June 9, 1998Assignee: Nippon Shokubai Co., Ltd.Inventors: Yasunori Okumura, Osamu Kaieda
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Patent number: 5712332Abstract: A method that includes mixing a resin and a phthalocyanine compound, provides a resin composition which is useful as a heat radiation-shielding material which is semi-transparent or transparent for visible light but blocks heat rays.Type: GrantFiled: June 7, 1995Date of Patent: January 27, 1998Assignee: Nippon Shokubai Co.Inventors: Osamu Kaieda, Takashi Yodoshi, Ken Morita, Michio Matsuura
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Patent number: 5608091Abstract: This invention is to provide a novel quinizarin compound which has a quinizarin structure represented by a following formula (1) having one to four of the 5, 6, 7, and 8 positions and at least either the 6 or 7 position formed of at least one member selected from the class consisting of secondary amino groups, alkylthio groups, and optionally substituted phenylthio groups, and having the remaining positions thereof formed of at least one member selected from the class consisting of hydrogen atom, halogen atoms, amino group, hydroxy group, alkoxy groups, and optionally substituted phenoxy groups, a method for the production thereof, and a dye, an electrophotographic grade color toner composition, a thermal-transfer recording sheet, an optical recording medium, an ink jet grade ink composition and a color filter severally comprising the quinizarin compound.Type: GrantFiled: September 30, 1994Date of Patent: March 4, 1997Assignee: Nippon Shokubai Co., Ltd.Inventors: Kiyoshi Masuda, Yukie Tamaura, Osamu Kaieda
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Patent number: 5359056Abstract: A novel fluorine-containing phthalocyanine compound represented by the following formula (I): ##STR1## wherein Y is ##STR2## wherein R.sub.1 and R.sub.2 are independently a hydrogen atom or a C1-C8 alkyl group; R.sub.3 and R.sub.4 are independently a C1-C8 alkyl group; X is a hydrogen atom, a C1-C4 alkyl group, a C1-C4 alkoxyl group or a halogen atom; Z is a hydrogen atom, a C1-C4 alkyl group, a C1-C4 alkoxyl group, a C1-C4 alkoxycarbonyl group or a halogen atom; W is a C1-C4 alkoxyl group; e, f, g, h and j are independently an integer of 1 or 2; n is an integer of 1 to 8; and p and q are independently an integer of 1 to 6; a to d are an integer of 0 to 2 with the proviso that the sum of a to d is 1 to 8; and M is a non-metal, a metal, a metal oxide, a metal carbonyl or a metal halide, and further, a method of producing a fluorine-containing phthalocyanine compound represented by the above formula (I).Type: GrantFiled: July 14, 1992Date of Patent: October 25, 1994Assignee: Nippon Shokubai Co., Ltd.Inventors: Osamu Kaieda, Takashi Yodoshi, Hideki Itoh, Miho Onozaki
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Patent number: 5166025Abstract: An electrophotographic plate-making quality matrix plate provided on an electroconductive substrate thereof with a photosensitive layer formed of an alkali-soluble binder resin containing an organic photoelectroconductive compound, which matric plate is characterized by the fact that said organic photoelectroconductive compound is a zinc phthalocyanine represented by the general formula I: ##STR1## wherein R is a --SZ group (where Z is a phenyl group, a phenyl group substituted with an alkyl group of 1 to 5 carbon atoms, or a naphthyl group), and said binder resin is a copolymer obtained by polymerizing a monomer mixture comprising (a) at least one compound selected from the group consisting of hydroxyalkyl acrylates and hydroxyalkyl methacrylates, (b) at least one copolymerizable unsaturated carboxylic acid, (c) at least one styrene compound, and (d) at least one compound selected from among acrylic esters other than said hydroxyalkyl acryaltes of (a).Type: GrantFiled: June 6, 1991Date of Patent: November 24, 1992Assignee: Nippon Shokubai Co., Ltd.Inventors: Osamu Kaieda, Kiyoshi Masuda, Hideki Ito, Takashi Yodoshi
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Patent number: 5072018Abstract: In a method for the production of cyclohexanecarboguanamine by the reaction of cyanocylohexane with dicyandiamide in an organic solvent possessing a hydroxyl group in the molecular unit thereof at a temperature in the range of 90.degree. to 200.degree. C. in the presence of a basic catalyst, the improvement which comprises carrying out the reaction using 0.60 to 0.95 mol of dicyandiamide per mol of cyanocylohexane in an atmosphere substantially incapable of producing any effect of oxygent.Type: GrantFiled: June 11, 1990Date of Patent: December 10, 1991Assignee: Nippon Shokubai Kagaku Kogyo Co., Ltd.Inventors: Hidetaka Yatagai, Osamu Kaieda, Jiro Iriguchi, Souichi Yamada, Tsuguo Takaya
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Patent number: 4973689Abstract: In a method for the production of cyclohexanecarboguanamine by the reaction of cyanocyclohexane with dicyandiamide in an organic solvent possessing a hydroxyl group in the molecular unit thereof at a temperature in the range of 90.degree. to 200.degree. C. in the presence of a basic catalyst, the improvement which comprises carrying out the reaction using 0.60 to 0.95 mol of dicyandiamide per mol of cyanocyclohexane in an atmosphere substantially incapable of producing any effect of oxygen.Type: GrantFiled: December 5, 1988Date of Patent: November 27, 1990Assignee: Nippon Shokubai Kagaku Kogyo Co., Ltd.Inventors: Hidetaka Yatagai, Osamu Kaieda, Jiro Iriguchi, Souichi Yamada, Tsuguo Takaya
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Patent number: 4782179Abstract: 3-amino-2,4,5-trifluorobenzoic acid which is a novel compound and is manufactured by heating 4-amino-3,5,6-trifluorophthalonitrile in the presence of an acid.Type: GrantFiled: February 9, 1988Date of Patent: November 1, 1988Assignee: Nippon Shokubai Kagaku Kogyo Co., Ltd.Inventors: Koichi Hirota, Osamu Kaieda, Tsuguo Takaya
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Patent number: 4769492Abstract: A method for the production of 2,3,4,5-tetrafluorobenzoic acid, which comprises effecting said production by decarbonating 3,4,5,6-tetrafluorophthalic acid in an aqueous medium adjusted to a pH in the range of 0.7 to 2.2 at a temperature in the range of 100.degree. to 220.degree. C.Type: GrantFiled: March 7, 1986Date of Patent: September 6, 1988Assignee: Nippon Shokubai Kagaku Kogyo Co., Ltd.Inventors: Osamu Kaieda, Isao Okitaka, Toshiaki Nakamura, Koichi Hirota
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Patent number: 4689179Abstract: A method for the production of a fluorinated quinone, which comprises causing a chlorinated aromatic compound represented by the general formula I: ##STR1## wherein A denotes O, ##STR2## (where m denotes an integer of the value of 1 to 4 and l denotes an integer of the value of 0 to 3), X denotes Cl, F, or H, n denotes an integer of the value of 0 to 4, k denotes an integer of the value of 0 to 3, and p denotes 0 to 1, providing that p is 1 and n is not zero where A is O, to react in benzonitrile as a medium at a temperature in the range of 190.degree. to 400.degree. C. with at least one fluorinating agent selected from the group consisting of alkali metal fluorides and alkaline earth metal fluorides under spontaneously generating pressure.Type: GrantFiled: July 17, 1985Date of Patent: August 25, 1987Assignee: Nippon Shokubai Kagaku Kogyo Co., Ltd.Inventors: Osamu Kaieda, Koichi Hirota, Hideki Itoh, Masaru Awashima, Toshiaki Nakamura
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Patent number: 4684734Abstract: Organic fluorine compounds such as pentafluorobenzonitrile, tetrafluorophthalonitriles, and pentafluoropyridine are produced by a method which comprises causing a chloro- or bromo-organic compound to react with a fluorinating agent such as an alkali metal fluoride in benzonitrile as a solvent at temperatures in the range of 190.degree. to 400.degree. C. under at least spontaneously generated pressure.Type: GrantFiled: September 13, 1985Date of Patent: August 4, 1987Assignee: Nippon Shokubai KK Co., Ltd.Inventors: Osamu Kaieda, Masaru Awashima, Isao Okitaka, Toshiaki Nakamura