Patents Assigned to Dai-Ichi Kogyo Seiyaku Co., Ltd.
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Patent number: 10355280Abstract: A manufacturing method which includes: (1) an alkali cellulose reaction step wherein a mixed solvent having a mixing ratio (a mass ratio) of an alcohol having a carbon number of 3 or less and water of 75:25 to 95:5 is used, and the concentration of the base to the water is 25 to 40 mass %; (2) an etherification reaction step wherein a reaction is carried out under an excess base of 0.2 to 0.5 moles per unit of an anhydroglucose of the cellulose; (3) a neutralization step wherein acid is added to adjust the pH of the reaction mixture to 6.0 to 8.0; and (4) a heating step wherein the mixed solvent is removed, and a base is added to adjust the pH of the reaction mixture to 8.0 to 9.0, and then a heat treatment is performed at 40 to 70° C. for 30 to 120 minutes.Type: GrantFiled: July 23, 2015Date of Patent: July 16, 2019Assignee: DAI-ICHI KOGYO SEIYAKU CO., LTD.Inventors: Atsushi Sanuki, Masanori Ohzaki, Miho Shibata
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Patent number: 10344112Abstract: An alkylene oxide-modified polyfunctional (meth)acrylate is provided wherein the problems according to high crystallinity or high viscosity are improved, and the photosensitivity, etc. is enhanced. The compound has a structure represented by the following formula (I), provided that in the formula (I), R represents a substituent represented by the formula (II); AO represents one member or two or more members selected from alkylene oxide units represented by —CH2CH2O—, —CH2CH(CH3)O—, —CH2CH2CH2CH2O— and —CH2CH(C2H5)O—; l indicating the average polymerization degree of the added alkylene oxide is 0<l?5; the average value of m is more than 0 and 6 or less; each of the average values of n and o is from 0 to 6, the total value of m, n and o is 6, and in the formula (II), R2 represents a hydrogen atom or a methyl group.Type: GrantFiled: February 19, 2013Date of Patent: July 9, 2019Assignee: DAI-ICHI KOGYO SEIYAKU CO., LTD.Inventors: Naohiro Takamura, Masato Kameda, Manabu Kikuta, Teruaki Sugahara
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Publication number: 20190193307Abstract: A release agent for vulcanized rubber molding is provided which has excellent mold releasing properties and washability. This release agent for vulcanized rubber molding contains an alkylene oxide adduct (A) of an active hydrogen group-containing compound having four active hydrogen atoms in the molecule, wherein the aforementioned alkylene oxide adduct (A) of an active hydrogen group-containing compound has a number average molecular weight of 5000-30000, and contains 50-95 mass % of an oxyethylene group.Type: ApplicationFiled: April 26, 2017Publication date: June 27, 2019Applicant: DAI-ICHI KOGYO SEIYAKU CO., LTD.Inventors: Takuya HORIE, Toshikazu NABESHIMA, Kazunori NAKAGAWA
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Patent number: 10280341Abstract: The present invention relates to an adhesive agent composition, containing an aqueous resin dispersion obtained by subjecting a polymerizable compound (C) containing a compound (C1) having a carbon-carbon unsaturated bond to an emulsion polymerization in the presence of a surfactant (A) and a surfactant (B) free from a radical-polymerizable substituent.Type: GrantFiled: October 28, 2015Date of Patent: May 7, 2019Assignee: DAI-ICHI KOGYO SEIYAKU CO., LTD.Inventors: Asako Ogasawara, Shigeru Kigasawa, Masatake Joyabu
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Publication number: 20190055323Abstract: Provided is a carboxymethyl cellulose or a salt thereof, in which when the carboxymethyl cellulose or the salt thereof is used as a binding agent for an electrode of a nonaqueous electrolyte secondary battery, defects, such as pinholes, on a surface of the electrode are reduced and a battery including the electrode has a good capacity retention. A method for producing a carboxymethyl cellulose or a salt thereof includes an alkali cellulose formation step (step 1) of allowing cellulose and an alkali to react with each other in the presence of a mixed solvent containing water and an organic solvent, an etherification step (step 2) of allowing the resulting alkali cellulose and an etherifying agent to react with each other, a purification step (step 3) of washing and drying the resulting reaction mixture, and a pulverization step (step 4) of pulverizing the resulting purified product.Type: ApplicationFiled: February 16, 2017Publication date: February 21, 2019Applicant: DAI-ICHI KOGYO SEIYAKU CO., LTD.Inventors: Ryo KAKUBARI, Atsushi SANUKI
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Publication number: 20180346847Abstract: A gel composition having high adhesion, high whitening resistance, and high high-temperature stability is provided. The gel composition includes a polyoxyalkylene alkyl ether (A) represented by general formula (1) and water (B). R—O—(PO)m-(EO)n—H ??(1) In the formula (1), R is a linear alkyl group having 12 to 22 carbon atoms, PO represents an oxypropylene group, EO represents an oxyethylene group, m and n each represent an average number of moles added, m is a number of 1 to 20, and n is a number of 1 to 80. PO and EO are added in a configuration of block addition.Type: ApplicationFiled: June 15, 2017Publication date: December 6, 2018Applicant: DAI-ICHI KOGYO SEIYAKU CO., LTD.Inventors: Natsu FUKUDA, Masatake JOYABU
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Publication number: 20180261846Abstract: A binder for an electrode of a lithium secondary battery contains a water dispersion of a polyurethane. The polyurethane has been formed of (A) a polyisocyanate, (B) a compound having two or more active hydrogen groups, (C) a compound having one or more active hydrogen groups and a hydrophilic group, and (D) a chain extending agent. The (B) compound having two or more active hydrogen groups contains an olefinic polyol and/or a carbonate diol having a carbon number between carbonate bond chains of less than 6. The binder has high adhesiveness to a collector, does not cause release in press molding, has high flexibility, and is excellent in bindability and resistance to an electrolytic solution.Type: ApplicationFiled: May 16, 2018Publication date: September 13, 2018Applicant: DAI-ICHI KOGYO SEIYAKU CO., LTD.Inventors: Katsuo TAKAHASHI, Shuichi ITO, Takeshi MIYAMURA
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Patent number: 10026963Abstract: A binder for an electrode of a lithium secondary battery contains a polyurethane aqueous dispersion. The polyurethane aqueous dispersion contains a hydrophilic group-containing polyurethane obtained by using at least (A) an organic polyisocyanate and (B) a compound having one or more active hydrogen groups. (A) the organic polyisocyanate has a content of 50 mass % or more and 80 mass % or less based on the hydrophilic group-containing polyurethane. (B) the compound having one or more active hydrogen groups contains (B1) a compound having one or more active hydrogen groups and (B2) a compound having one or more active hydrogen groups and one or more ionic hydrophilic groups.Type: GrantFiled: July 1, 2014Date of Patent: July 17, 2018Assignee: DAI-ICHI KOGYO SEIYAKU CO., LTD.Inventors: Katsuo Takahashi, Takeshi Miyamura
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Patent number: 10003076Abstract: A binder for an electrode of a lithium secondary battery contains a water dispersion of a polyurethane. The polyurethane has been formed of (A) a polyisocyanate, (B) a compound having two or more active hydrogen groups, (C) a compound having one or more active hydrogen groups and a hydrophilic group, and (D) a chain extending agent. The (B) compound having two or more active hydrogen groups contains an olefinic polyol and/or a carbonate diol having a carbon number between carbonate bond chains of less than 6. The binder has high adhesiveness to a collector, does not cause release in press molding, has high flexibility, and is excellent in bindability and resistance to an electrolytic solution.Type: GrantFiled: August 4, 2014Date of Patent: June 19, 2018Assignee: DAI-ICHI KOGYO SEIYAKU CO., LTD.Inventors: Katsuo Takahashi, Shuichi Ito, Takeshi Miyamura
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Publication number: 20180126602Abstract: Provided is a release agent for vulcanized rubber molding, the release agent exhibiting good mold releasability between a mold and a rubber after vulcanization and capable of being easily removed after production. The release agent for vulcanized rubber molding contains a polyoxyalkylene glyceryl ether (A). The polyoxyalkylene glyceryl ether (A) contains 50% to 95% by mass of oxyethylene groups in 100% by mass of oxyalkylene groups. The polyoxyalkylene glyceryl ether (A) preferably has a number-average molecular weight of 2,000 to 20,000.Type: ApplicationFiled: January 18, 2016Publication date: May 10, 2018Applicant: DAI-ICHI KOGYO SEIYAKU CO., LTD.Inventors: Shigeru KIGASAWA, Toshikazu NABESHIMA, Takuya HORIE
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Patent number: 9901527Abstract: A viscous composition of the present invention comprises specific cellulose fibers (A), (A?) and (A?) and the specific cellulose fibers (A), (A?) and (A?) are used with appropriate selection according to uses of a cosmetic composition, a gel-like composition and a spray composition. Therefore, in case where the composition is used as the cosmetic composition, a cosmetic composition which is excellent in shape retention ability and dispersion stability and excellent in water tolerance to satisfy the properties and the performance which is necessary for cosmetics is obtained. Additionally, in case where the composition is used as a gel-like composition, gel-state can be kept without separation or water release. Furthermore, in case where the composition is used as a spray composition, since it is possible to time-dependently keep stable gel state even if functional additives such as electrolytes, ionic substances, etc.Type: GrantFiled: November 24, 2015Date of Patent: February 27, 2018Assignee: DAI-ICHI KOGYO SEIYAKU CO., LTD.Inventors: Akira Isogai, Hideyuki Sumi, Yousuke Goi
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Publication number: 20170327602Abstract: The present invention relates to an aqueous resin dispersion, obtained by subjecting a polymerizable compound (C) containing a compound (C1) having a carbon-carbon unsaturated bond to an emulsion polymerization in the presence of a surfactant (A) and a surfactant (B) free from a radical-polymerizable substituent.Type: ApplicationFiled: October 28, 2015Publication date: November 16, 2017Applicant: DAI-ICHI KOGYO SEIYAKU CO., LTD.Inventors: Asako OGASAWARA, Toshio KAGIMASA, Masatake JOYABU
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Patent number: 9803128Abstract: To provide an additive for drilling mud, used in drilling for petroleum, natural gas, civil engineering, mines, etc., which has high heat resistance and high mechanical shear resistance, of which the viscous property does not degrade even under high-temperature and high-shear conditions; has high pseudoplastic flowability and therefore secures high flowability during discharging; and is a naturally-derived one and is therefore highly biodegradable and has least adverse impact on environment. An additive for drilling mud, which contains cellulose fibers having a number-average fiber diameter of from 2 to 500 nm and a fiber aspect ratio of 50 or more and having a cellulose I-type crystal structure.Type: GrantFiled: August 26, 2014Date of Patent: October 31, 2017Assignee: DAI-ICHI KOGYO SEIYAKU CO., LTD.Inventors: Yousuke Goi, Mineo Sabi, Kazuhito Jinno, Koji Noda
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Patent number: 9801802Abstract: A viscous composition of the present invention comprises specific cellulose fibers (A), (A?) and (A?) and the specific cellulose fibers (A), (A?) and (A?) are used with appropriate selection according to uses of a cosmetic composition, a gel-like composition and a spray composition. Therefore, in case where the composition is used as the cosmetic composition, a cosmetic composition which is excellent in shape retention ability and dispersion stability and excellent in water tolerance to satisfy the properties and the performance which is necessary for cosmetics is obtained. Additionally, in case where the composition is used as a gel-like composition, gel-state can be kept without separation or water release. Furthermore, in case where the composition is used as a spray composition, since it is possible to time-dependently keep stable gel state even if functional additives such as electrolytes, ionic substances, etc.Type: GrantFiled: November 24, 2015Date of Patent: October 31, 2017Assignee: DAI-ICHI KOGYO SEIYAKU CO., LTD.Inventors: Akira Isogai, Hideyuki Sumi, Yousuke Goi
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Publication number: 20170306192Abstract: The present invention relates to an adhesive agent composition, containing an aqueous resin dispersion obtained by subjecting a polymerizable compound (C) containing a compound (C1) having a carbon-carbon unsaturated bond to an emulsion polymerization in the presence of a surfactant (A) and a surfactant (B) free from a radical-polymerizable substituent.Type: ApplicationFiled: October 28, 2015Publication date: October 26, 2017Applicant: Dai-Ichi Kogyo Seiyaku Co., Ltd.Inventors: Asako OGASAWARA, Shigeru KIGASAWA, Masatake JOYABU
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Patent number: 9780374Abstract: To provide a binder that has high adhesiveness to a collector, does not cause release in press molding, has high flexibility, and is excellent in binding capability and resistance to an electrolytic solution, and to provide a lithium secondary battery that is excellent in charge and discharge characteristics using an electrode produced with the binder. The binder for an electrode used contains a hydrophilic group-containing polyurethane as a water dispersion that contains (A) a polyisocyanate, (B) a compound that has two or more active hydrogen groups, (C) a compound that has one or more active hydrogen groups and one or more hydrophilic groups, and (D) a chain extending agent, or contains an aqueous resin composition containing a polymer of an unsaturated polymerizable monomer that is emulsified with the hydrophilic group-containing polyurethane.Type: GrantFiled: January 28, 2013Date of Patent: October 3, 2017Assignee: DAI-ICHI KOGYO SEIYAKU CO., LTD.Inventors: Katsuo Takahashi, Shuichi Ito, Takeshi Miyamura
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Publication number: 20170256799Abstract: A manufacturing method which includes: (1) an alkali cellulose reaction step wherein a mixed solvent having a mixing ratio (a mass ratio) of an alcohol having a carbon number of 3 or less and water of 75:25 to 95:5 is used, and the concentration of the base to the water is 25 to 40 mass %; (2) an etherification reaction step wherein a reaction is carried out under an excess base of 0.2 to 0.5 moles per unit of an anhydroglucose of the cellulose; (3) a neutralization step wherein acid is added to adjust the pH of the reaction mixture to 6.0 to 8.0; and (4) a heating step wherein the mixed solvent is removed, and a base is added to adjust the pH of the reaction mixture to 8.0 to 9.0, and then a heat treatment is performed at 40 to 70° C. for 30 to 120 minutes.Type: ApplicationFiled: July 23, 2015Publication date: September 7, 2017Applicant: DAI-ICHI KOGYO SEIYAKU CO., LTD.Inventors: Atsushi SANUKI, Masanori OHZAKI, Miho SHIBATA
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Patent number: 9708466Abstract: A resin composition for laser processing which is able to enhance laser processability with maintaining a resist performance of a resin after ultraviolet laser processing, and which can be, for example, used as a resist in forming a circuit of a printed wiring board is provided. Disclosed is a resin composition for laser processing containing a resin and an ultraviolet absorber, wherein the resin is a thermoplastic resin having a carboxyl group and having a softening temperature of from 70 to 140° C., and a content of the ultraviolet absorber is from 1 to 30 parts by mass based on 100 parts by mass of the thermoplastic resin.Type: GrantFiled: February 20, 2013Date of Patent: July 18, 2017Assignee: DAI-ICHI KOGYO SEIYAKU CO., LTD.Inventors: Satoshi Murakami, Manabu Kikuta
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Patent number: 9637563Abstract: A reactive surfactant composition comprising one or more kinds of reactive surfactants is disclosed that may be used as an emulsifier for emulsion polymerization, a dispersant for suspension polymerization, a nonaqueous dispersant, or a resin modifier.Type: GrantFiled: June 19, 2014Date of Patent: May 2, 2017Assignee: DAI-ICHI KOGYO SEIYAKU CO., LTD.Inventor: Asako Ogasawara
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Patent number: 9624353Abstract: A nonionic surfactant composition including: a nonionic surfactant that contains a molecule having a C10-C22 alkyl group and/or alkenyl group as a hydrophobic group, a polyoxyalkylene chain as a hydrophilic group, no aromatic ring, no C9-C14 alkyl group derived from an alcohol that is produced from a higher olefin derived from a mixture of propylene and butene through an oxo process, and no C13 alkyl group derived from an alcohol that is produced from a higher olefin derived from a propylene tetramer through an oxo process. The nonionic surfactant has a hydrodynamic radius of 5.0 to 8.0 nm at 40° C. in an aqueous solution in which a nonionic surfactant concentration is 0.1 kg/L in the nonionic surfactant composition, the radius being measured by a dynamic light scattering method.Type: GrantFiled: March 27, 2013Date of Patent: April 18, 2017Assignees: DAIKIN INDUSTRIES, LTD., DAI-ICHI KOGYO SEIYAKU CO., LTD., OSAKA UNIVERSITYInventors: Nobuhiko Tsuda, Atsuko Tanaka, Kenji Adachi, Nahoko Izaki, Masayuki Hashimoto, Takahiro Sato