Patents by Inventor Ryoichi Tamaki
Ryoichi Tamaki 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: 7226500Abstract: The invention provides an additive for heated asphalt that can further improve a peeling prevention effect between asphalt and aggregates. The invention relates to an additive which is added to heated asphalt containing a particular gallic acid ester with or combination of gallic acid and an alcohol.Type: GrantFiled: January 15, 2003Date of Patent: June 5, 2007Assignee: Kao CorporationInventors: Yuichi Honma, Ryoichi Tamaki, Takashi Mukai
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Publication number: 20050066855Abstract: The invention provides an additive for heated asphalt that can further improve a peeling prevention effect between asphalt and aggregates. The invention relates to an additive which is added to heated asphalt containing a particular gallic acid ester and so on.Type: ApplicationFiled: January 15, 2003Publication date: March 31, 2005Inventors: Yuichi Honma, Ryoichi Tamaki, Takashi Mukai
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Patent number: 6840991Abstract: Provided is, particularly, a cationic asphalt emulsion composition which is scarcely affected by temperature during paving and by the characteristics of the aggregates to be used, can secure a sufficient time required to mix aggregates and enables slurry fluidity suitable for paving. The asphalt emulsion composition contains asphalt and water, the composition comprising kraft lignin (A) having a molecular weight of 4000 to 60000 and a specific polyamine (B) in each specific ratio to the asphalt emulsion composition.Type: GrantFiled: January 10, 2002Date of Patent: January 11, 2005Assignee: Kao CorporationInventors: Yuichi Honma, Ryoichi Tamaki, Hirotaka Sasaki
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Patent number: 6786961Abstract: The present invention provides a stabilizer for asphalt emulsion by which asphalt emulsion having a good chemical stability and being excellent in stationary stability and storage stability can be obtained. A polyoxyethylene adduct compound having a terminal group A selected from a C8-22 alkyl group etc., a terminal group B selected from C1-4 alkyl group etc., and 130 to 500 oxyethylene groups on the average for bonding the terminal groups A and B is used as a stabilizer for asphalt emulsion.Type: GrantFiled: November 13, 2002Date of Patent: September 7, 2004Assignee: Kao CorporationInventors: Yuichi Honma, Ryoichi Tamaki, Hirotaka Sasaki
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Patent number: 6667382Abstract: The present invention provides an amine or polyamine, which has a surface activity not inferior to a solid tallow-based amine and an excellent workability. A salt of the amine is suited for emulsifying asphalt and the like, and also provides an asphalt emulsion composition which is obtained by using the salt and which has a quick setting property. Namely, the prevent invention provides a polyamine represented by the formula (1), a process for producing the amine, and an asphalt emulsion composition containing a water-soluble salt of the amine. wherein R is a straight or branched hydrocarbon group having 8 to 22 carbon atoms; x is a number of 1 to 5; and each of y and z is a number of 0 to 5 with the proviso that both of y and z are not 0 at the same time.Type: GrantFiled: November 1, 2000Date of Patent: December 23, 2003Assignee: Kao CorporationInventors: Kazuo Isobe, Ryoichi Tamaki, Keiichiro Tomioka, Wataru Yoshida, Tetsuaki Fukushima, Uichiro Nishimoto
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Publication number: 20030149139Abstract: The present invention provides a stabilizer for asphalt emulsion by which asphalt emulsion having a good chemical stability and being excellent in stationary stability and storage stability can be obtained. A polyoxyethylene adduct compound having a terminal group A selected from a C8-22 alkyl group etc., a terminal group B selected from C1-4 alkyl group etc., and 130 to 500 oxyethylene groups on the average for bonding the terminal groups A and B is used as a stabilizer for asphalt emulsion.Type: ApplicationFiled: November 13, 2002Publication date: August 7, 2003Inventors: Yuichi Honma, Ryoichi Tamaki, Hirotaka Sasaki
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Publication number: 20020144628Abstract: provided is, particularly, a cationic asphalt emulsion composition which is scarcely affected by temperature during paving and by the characteristics of the aggregates to be used, can secure a sufficient time required to mix aggregates and enables slurry fluidity suitable for paving. The asphalt emulsion composition contains asphalt and water, the composition comprising kraft lignin (A) having a molecular weight of 4000 to 60000 and a specific polyamine (B) in each specific ratio to the asphalt emulsion composition.Type: ApplicationFiled: January 10, 2002Publication date: October 10, 2002Inventors: Yuichi Honma, Ryoichi Tamaki, Hirotaka Sasaki
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Patent number: 6261356Abstract: The present invention provides an additive for asphalt which causes an improvement in anti-stripping effect of asphalt from aggregates, and exhibits the effect quickly. That is, the present invention provides an asphalt-additive composition comprising (A) a specific acidic phosphoric acid compound, and (B) at least one member selected from the group consisting of mineral oil, alcohol having 8 to 18 carbon atoms, carboxylic acid having 8 to 18 carbon atoms and triglyceride thereof; with the proviso that the amount of the (B) component is 25-400 parts by weight per 100 parts by weight of the (A) component.Type: GrantFiled: September 10, 1999Date of Patent: July 17, 2001Assignee: Kao CorporationInventors: Kazuo Isobe, Ryoichi Tamaki, Keiichiro Tomioka
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Patent number: 6114418Abstract: The present invention provides an oil-in-water asphalt emulsion having excellent stability in a stationary state. That is, the present invention provides a method for emulsifying an asphalt in water, which comprises the step of mixing the asphalt and water with an emulsifier comprising a nonionic compound (1) having the formula (1):R--O--(C.sub.2 H.sub.4 O).sub.x --(CH(CH.sub.3)--CH.sub.2 --O).sub.y --(C.sub.2 H.sub.4 O).sub.z --H (1)in which R is an alkyl or an alkenyl, having 8 to 22 carbon atoms, being either straight or branched; x is a number of 0 to 40; y is a number of 1 to 10; and z is a number of 1 to 80.Type: GrantFiled: October 16, 1998Date of Patent: September 5, 2000Assignee: Kao CorporationInventors: Kazuo Isobe, Ryoichi Tamaki
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Patent number: 6048905Abstract: The present invention provides a liquid amine composition for an emulsifier for bitumen which can impart, to a bituminous emulsion, more excellent emulsifying stability and adhesive properties to aggregates than conventional products. The liquid amine composition for the emulsifier for bitumen of the present invention comprises (1) 5 to 70% by weight a monoamine having an aliphatic hydrocarbyl group of 8 to 22 carbon atoms, (2) 20 to 80% by weight of a polyamine having an aliphatic hydrocarbyl group of 8 to 22 carbon atoms, and (3) 10 to 75% by weight of an organic acid of 4 to 18 carbon atoms.Type: GrantFiled: September 1, 1998Date of Patent: April 11, 2000Assignee: Kao CorporationInventors: Katsuhiko Asamori, Shigeru Nagao, Ryoichi Tamaki, Takao Taniguchi, Keiichiro Tomioka, Kouji Koyanagi
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Patent number: 6024788Abstract: The present invention provides an asphalt composition comprising an asphalt and antistripping additive comprising at least one of the compound having the formula (I), (II) or (III):[R.sup.1 O--(PO).sub.m (EO).sub.n ].sub.x --P(=O)--(OH).sub.y(I)wherein R.sup.1 represents a linear hydrocarbon radical having 8 to 24 carbon atoms or an alkyl phenyl group having 8 to 24 carbon atoms, PO represents oxypropylene group, EO represents oxyethylene group, each of m and n represents the number of added molecules, m is a number of 1 to 6, n is a number of 0 to 6;[R.sup.2 O--(PO).sub.m (EO).sub.n ].sub.x --P(=O)--(OH).sub.y(II)wherein R.sup.2 represents an aliphatic hydrocarbon radical having a branched methyl group and having 8 to 24 carbon atoms, PO represents oxypropylene group, EO represents oxyethylene group, each of m and n represents the number of added molecules, m is a number of 0 to 6, n is a number of 0 to 6; and[R.sup.3 O--(PO).sub.m (EO).sub.n ].sub.x --P(=O)--(OH).sub.y(III)wherein R.sup.Type: GrantFiled: December 14, 1998Date of Patent: February 15, 2000Assignee: Kao CorporationInventors: Keiichiro Tomioka, Ryoichi Tamaki, Kazuo Isobe
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Patent number: 6013681Abstract: A liquid amine compound which can be applied to various uses such as emulsification for bitumens since it has as high surface activity as those of solid amines and is more excellent in workability as compared with the solid amines, and an emulsifier for bitumens produced by using the amine compound. Furthermore, a process for producing an emulsifier a bituminous emulsion by reacting an aliphatic amine having at least one hydrocarbon group having not less than 8 carbon atoms with a carbonyl compound and adding an acid thereto to adjust the pH of the amine compound so as to be not more than 5, and a process for producing a bituminous emulsion composition by using the amine compound.Type: GrantFiled: February 17, 1998Date of Patent: January 11, 2000Assignee: Kao CorporationInventors: Katsuhiko Asamori, Ryoichi Tamaki, Hitoshi Funada, Takao Taniguchi, Francisco Castaneda Juarez, Cesar Alvarez Ortiz, Alvaro Gutierrez Muniz, Humberto Ramirez Hernandez
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Patent number: 5928418Abstract: An asphalt emulsion comprising water, asphalt, (A) an emulsifier selected from the group consisting of specific aliphatic amines, aminated lignins, imidazolines having a hydrocarbon group having 7 or more carbon atoms, and amidobetaines having a hydrocarbon group having 7 or more carbon atoms, (B) a polyphenolic compound, and (C) at least one member selected from the group consisting of anionic polumeric dispersants, hydroxycarboxylic acids and/or (D) at least one member selected from the group consisting of saccharides, sugar alcohols and polyhydric alcohols, which is excellent in storage stanility, mixability with aggregate and low foaming properties of the emulsion itself, in adherence of the products of breaking thereof to aggregate, and in stripping resistance of the construction executed by the use of the emulsion.Type: GrantFiled: August 4, 1997Date of Patent: July 27, 1999Assignee: Kao CorporationInventors: Ryoichi Tamaki, Katsuhiko Asamori, Hirotaka Sasaki, Hitoshi Funada, Takao Taniguchi
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Patent number: 5721296Abstract: Disclosed is an asphalt composition to which a water soluble prepolymer which is resinified while the reaction proceeds gradually in the aqueous solution is added, wherein the strength of the asphalt composition is notably improved. Further, the resinification speed can freely be controlled by the action of a resinification accelerator. Accordingly, the additive for the emulsified asphalt and the asphalt composition for blending at cold temperatures can be applied effectively to various applications such as road pavement, railroad, waterproof agents, and adhesives.Type: GrantFiled: February 14, 1996Date of Patent: February 24, 1998Assignee: KAO CorporationInventors: Tatsuya Mizunuma, Shingo Tanaka, Ryoichi Tamaki, Hitoshi Funada, Takao Taniguchi, Hirotaka Sasaki
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Patent number: 4963190Abstract: An aqueous dispersant composition for cement comprises 100 parts by weight of a copolymer of an olefin having 2 to 8 carbon atoms and an ethylenically unsaturated dicarboxylic anhydride, the copolymer being in the form of fine particles having an average size of 0.1 to 20 micrometers, 15 to 300 parts by weight, of zinc, as zinc oxide or zinc hydroxide, and water, the composition being adjusted to have a pH value of 6 to 12.Type: GrantFiled: March 17, 1989Date of Patent: October 16, 1990Assignee: Kao CorporationInventors: Tatsuya Mizunuma, Ryoichi Tamaki, Shoji Kanzaki, Yoshiaki Tanisho, Fuzio Yamato
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Patent number: 3963509Abstract: Asphalt having a high adhesion strength is prepared by incorporating in asphalt a small amount of monocarboxylic chromic chloride expressed by the following general formula: ##EQU1## WHEREIN R is an alkyl or alkenyl group having 1 to 21 carbon atoms, as an antistripping agent.Type: GrantFiled: January 13, 1975Date of Patent: June 15, 1976Assignee: Kao Soap Co., Ltd.Inventors: Tadashi Doi, Isao Sekido, Ryoichi Tamaki
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Patent number: 3932331Abstract: Asphalt emulsions are rapidly hardened by incorporating therein an isocyanate-terminated urethane prepolymer formed by reacting one equivalent of the OH group of a polyalkylene glycol having the following formula ##EQU1## wherein p + r .gtoreq. q, q .gtoreq. O, p .gtoreq. 1, r .gtoreq. 1 and 20 .ltoreq. p + q + r .ltoreq. 100, with 1.1 to 2.0 equivalents of the NCO group of an organic diisocyanate.Type: GrantFiled: November 6, 1974Date of Patent: January 13, 1976Assignee: Kao Soap Co., Ltd.Inventors: Tadashi Doi, Isao Sekido, Ryoichi Tamaki