Patents by Inventor Kenichi Ishizaki
Kenichi Ishizaki 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).
-
Publication number: 20230391903Abstract: A curable composition, including a 2-cyanoacrylate compound represented by Formula (1), in which a storage modulus of a cured product of the curable composition at 23° C. is from 1.0×104 Pa to 1.0×108 Pa and in which, in Formula (1), each L1 independently represents a linear or branched alkylene group having 2 to 6 carbon atoms which may have a sub stituent, p represents an integer from 2 to 8, and R1 represents an linear or branched alkyl group, an aryl group, an alkenyl group or an alkynyl group having 1 to 8 carbon atoms which may have a substituent.Type: ApplicationFiled: October 13, 2021Publication date: December 7, 2023Inventors: Kei KONDO, Erika ISSHIKI, Kenichi ISHIZAKI, Eiichi OKAZAKI
-
Publication number: 20220325148Abstract: An easily water-dismantlable adhesive composition containing a 2-cyanoacrylate compound represented by Formula (1): in which L1's each independently represent —CH2CH2—, —CH(R1)CH2—, or —CH2CH(R1)—, R1 represents an alkyl group having 1 to 3 carbon atoms, R2 represents a linear or branched alkyl group having 1 to 4 carbon atoms, p represents an integer of 3 to 6, and, among p -L1-O—'s in Formula (1), 2 to 4 -L1-O—'s are —CH2CH2—O—, and 0 to 2 -L1-O—'s are —CH(R1)CH2— and/or —CH2CH(R1)—O—.Type: ApplicationFiled: August 4, 2020Publication date: October 13, 2022Inventors: Erika ISSHIKI, Kei KONDO, Kenichi ISHIZAKI, Eiichi OKAZAKI
-
Publication number: 20220298105Abstract: A 2-cyanoacrylate compound represented by Formula (1) and an adhesive composition containing the 2-cyanoacrylate compound represented by Formula (1). In Formula (1), R1 represents a divalent linking group having 1 to 20 carbon atoms, R2 and R3 each independently represent an alkylene group having 2 to 4 carbon atoms, and R4 represents an alkyl group having 1 to 20 carbon atoms.Type: ApplicationFiled: August 4, 2020Publication date: September 22, 2022Inventors: Kei KONDO, Erika ISSHIKI, Kenichi ISHIZAKI, Eiichi OKAZAKI
-
Publication number: 20210363393Abstract: An easily water-disintegrable adhesive composition contains a 2-cyanoacrylate compound and a water-soluble compound, and wherein a cured product of the adhesive composition has a water absorption rate of 5% or higher when immersed in 40° C. water for 24 hours. The cured product of the adhesive composition preferably has a water absorption rate of 5% or higher when immersed in 23° C. water for 24 hours.Type: ApplicationFiled: February 8, 2019Publication date: November 25, 2021Inventors: Erika Isshiki, Kenichi Ishizaki, Yoji Horie, Eiichi Okazaki
-
Patent number: 10793749Abstract: To provide a 2-cyanoacrylate-based adhesive composition not only exhibiting an excellent adhesion rate to a metal and a thermoplastic elastomer low in polarity, but also being excellent in storage stability. A 2-cyanoacrylate-based adhesive composition containing a 2-cyanoacrylic acid ester, and a compound having a sulfur atom-containing heteroallene structure.Type: GrantFiled: June 23, 2017Date of Patent: October 6, 2020Assignee: TOAGOSEI CO., LTD.Inventors: Kenichi Ishizaki, Yushi Ando
-
Publication number: 20190233679Abstract: To provide a 2-cyanoacrylate-based adhesive composition not only exhibiting an excellent adhesion rate to a metal and a thermoplastic elastomer low in polarity, but also being excellent in storage stability. A 2-cyanoacrylate-based adhesive composition containing a 2-cyanoacrylic acid ester, and a compound having a sulfur atom-containing heteroallene structure.Type: ApplicationFiled: June 23, 2017Publication date: August 1, 2019Applicant: TOAGOSEI CO., LTD.Inventors: Kenichi ISHIZAKI, Yushi ANDO
-
Patent number: 9994662Abstract: The two-part curable composition has excellent curability, and exhibits flexibility and adhesion durability. The two-part curable composition includes a first reagent containing at least a 2-cyanoacrylic acid ester and a second reagent containing at least a polymer having a hydrolyzable silyl group, in which an elastomer and a curing catalyst for the above polymer are each contained in at least one of the first and second reagents in predetermined amounts. A preferable curing catalyst is a compound having a metal element and an organic group bonded to the metal element via oxygen, or an acid having a pKa of 4 or lower at 25° C. Preferably, a curing accelerator for 2-cyanoacrylic acid ester is contained in at least one of the first and second reagents.Type: GrantFiled: December 1, 2015Date of Patent: June 12, 2018Assignee: TOAGOSEI CO., LTD.Inventors: Kenichi Ishizaki, Yushi Ando
-
Patent number: 9932447Abstract: Provided is a curable resin composition which exhibits excellent curability and is good in storage stability. The curable resin composition comprises (a) a polymer having a hydrolyzable silyl group, (b) an acid catalyst, and (c) an onium salt represented by the following general formula (1): C+A???(1) wherein C+ is an onium cation, and A? is a hydrogen sulfate anion, a hydrogen sulfite anion, a sulfonate anion represented by R1SO3? wherein R1 represents an alkyl group, perfluoroalkyl group, cycloalkyl group, vinyl group, aryl group, perfluoroaryl group, aralkyl group or halogen atom; or a bis(substituted sulfonyl)imide anion represented by (R2SO2)2N? wherein R2 represents an alkyl group, perfluoroalkyl group, or aryl group; tetrafluoroborate anion, or hexafluorophosphate anion.Type: GrantFiled: August 22, 2014Date of Patent: April 3, 2018Assignee: TOAGOSEI CO., LTD.Inventors: Kenichi Ishizaki, Yushi Ando
-
Publication number: 20170327616Abstract: The two-part curable composition has excellent curability, and exhibits flexibility and adhesion durability. The two-part curable composition includes a first reagent containing at least a 2-cyanoacrylic acid ester and a second reagent containing at least a polymer having a hydrolyzable silyl group, in which an elastomer and a curing catalyst for the above polymer are each contained in at least one of the first and second reagents in predetermined amounts. A preferable curing catalyst is a compound having a metal element and an organic group bonded to the metal element via oxygen, or an acid having a pKa of 4 or lower at 25° C. Preferably, a curing accelerator for 2-cyanoacrylic acid ester is contained in at least one of the first and second reagents.Type: ApplicationFiled: December 1, 2015Publication date: November 16, 2017Inventors: Kenichi ISHIZAKI, Yushi ANDO
-
Patent number: 9688840Abstract: An adhesive composition is provided which is excellent in adhesion rate on non-polar hard-to-bond materials and bond gap curability, and further is good in storage stability. It is a 2-cyanoacrylate-based adhesive composition which includes (a) a 2-cyanoacrylic acid ester and (b) an onium salt represented by the following general formula (1): nC+A?n-X??(1) wherein, in formula (1), C+ represents an onium cation, A? represents at least one anion selected from the group consisting of —SO3?, —OSO3? and a specific imide anion, X represents a linking group which connects at least two anions together, and n is an integer of 2 or more.Type: GrantFiled: February 27, 2015Date of Patent: June 27, 2017Assignee: TOAGOSEI CO., LTD.Inventors: Kenichi Ishizaki, Yushi Ando
-
Patent number: 9611378Abstract: An adhesive composition is provided which exhibits an excellent adhesion rate on metals and low-polarity thermoplastic elastomers, and is excellent in appearance with no clouding of hardened bodies and is good in storage stability. It is a 2-cyanoacrylate-based adhesive composition which includes (a) a 2-cyanoacrylic acid ester and (b) an onium salt represented by the general formula: C+A?(1) where, in formula (1), C+ represents an onium cation, and A? represents a bis(fluorosulfonyl)imide anion.Type: GrantFiled: February 27, 2015Date of Patent: April 4, 2017Assignee: TOAGOSEI CO., LTD.Inventors: Kenichi Ishizaki, Yushi Ando
-
Publication number: 20170015813Abstract: An adhesive composition is provided which is excellent in adhesion rate on non-polar hard-to-bond materials and bond gap curability, and further is good in storage stability. It is a 2-cyanoacrylate-based adhesive composition which includes (a) a 2-cyanoacrylic acid ester and (b) an onium salt represented by the following general formula (1): nC+A?n-X??(1) wherein, in formula (1), C+ represents an onium cation, A? represents at least one anion selected from the group consisting of —SO3?, —OSO3? and a specific imide anion, X represents a linking group which connects at least two anions together, and n is an integer of 2 or more.Type: ApplicationFiled: February 27, 2015Publication date: January 19, 2017Inventors: Kenichi ISHIZAKI, Yushi ANDO
-
Publication number: 20170015814Abstract: An adhesive composition is provided which exhibits an excellent adhesion rate on metals and low-polarity thermoplastic elastomers, and is excellent in appearance with no clouding of hardened bodies and is good in storage stability. It is a 2-cyanoacrylate-based adhesive composition which includes (a) a 2-cyanoacrylic acid ester and (b) an onium salt represented by the general formula: C+A?(1) where, in formula (1), C+ represents an onium cation, and A? represents a bis(fluorosulfonyl)imide anion.Type: ApplicationFiled: February 27, 2015Publication date: January 19, 2017Inventors: Kenichi ISHIZAKI, Yushi ANDO
-
Patent number: 9458361Abstract: An curable adhesive composition that can form a cured product exhibiting high shear adhesion strength, peel adhesion strength and impact adhesion strength and exhibiting, in particular, excellent cold/hot cycle resistance of adhesion strength, includes (a) a 2-cyanoacrylic acid ester, (b) a high molecular-weight component, such as a polymer, compatible with the 2-cyanoacrylic acid ester, (c) a multifunctional 2-cyano-3-vinylacrylic acid ester, and (d) an onium salt represented by the following general formula (1): C+A???(1) wherein C+ represents an onium cation, A? represents an anion such provided that the anion does not substantially initiate polymerization of the 2-cyanoacrylic acid, in which the curable adhesive contains components (b)-(d) in predetermined amounts relative to 100 parts by mass of the component (a).Type: GrantFiled: December 3, 2013Date of Patent: October 4, 2016Assignee: TOAGOSEI CO., LTD.Inventors: Kenichi Ishizaki, Yushi Ando
-
Patent number: 9353299Abstract: A 2-cyanoacrylate-based adhesive composition includes a 2-cyanoacrylic acid ester (a) and an onium salt (b) represented by general formula C+A?. In the formula, C+ is an onium cation, and A? is a hydrogen sulfate anion, bisulfite anion, sulfonate anion represented by R1SO3? (where R1 is an alkyl group, perfluoroalkyl group having 3 to 10 carbon atoms, cycloalkyl group, vinyl group, aryl group, perfluoroaryl group, aralkyl group, or halogen atom), or bis(substituted sulfonyl)imide anion represented by (R2SO2)2N? (where R2 is an alkyl group, perfluoroalkyl group, or aryl group).) The 2-cyanoacrylate-based adhesive composition has good storage stability and has an excellent adhesion rate to metals and thermoplastic elastomers.Type: GrantFiled: September 6, 2013Date of Patent: May 31, 2016Assignee: TOAGOSEI CO., LTD.Inventors: Kenichi Ishizaki, Yushi Ando
-
Publication number: 20150315426Abstract: Provided is an adhesive composition which can form a cured product that is high in shear adhesion strength, peel adhesion strength and impact adhesion strength and particularly is excellent in cold/hot cycle resistance of adhesion strength. The adhesive composition comprises (a) a 2-cyanoacrylic acid ester, (b) a high molecular-weight component compatible with 2-cyanoacrylic acid ester, (c) a multifunctional 2-cyano-3-vinylacrylic acid ester, and (d) an onium salt represented by the following general formula (1): C+A???(1) wherein, C+ represents an onium cation and A? represents an anion which does not substantially initiate polymerization of the 2-cyanoacrylic acid ester, and the components (a)-(d) are contained in predetermined amounts.Type: ApplicationFiled: December 3, 2013Publication date: November 5, 2015Applicant: TOAGOSEI CO., LTD.Inventors: Kenichi ISHIZAKI, Yushi ANDO
-
Publication number: 20150225627Abstract: A 2-cyanoacrylate-based adhesive composition includes a 2-cyanoacrylic acid ester (a) and an onium salt (b) represented by general formula C+A?. In the formula, C+ is an onium cation, and A? is a hydrogen sulfate anion, bisulfite anion, sulfonate anion represented by R1SO3? (where R1 is an alkyl group, perfluoroalkyl group having 3 to 10 carbon atoms, cycloalkyl group, vinyl group, aryl group, perfluoroaryl group, aralkyl group, or halogen atom), or bis(substituted sulfonyl)imide anion represented by (R2SO2)2N? (where R2 is an alkyl group, perfluoroalkyl group, or aryl group).) The 2-cyanoacrylate-based adhesive composition has good storage stability and has an excellent adhesion rate to metals and thermoplastic elastomers.Type: ApplicationFiled: September 6, 2013Publication date: August 13, 2015Inventors: Kenichi Ishizaki, Yushi Ando
-
Patent number: 8541495Abstract: An adhesive composition is provided particularly excellent in thermal shock resistance for adhesive strength as well as high shear adhesive strength, peel adhesive strength and impact adhesive strength. The adhesive composition of the present invention contains (a) a 2-cyanoacrylate such as 2-ethoxyethyl 2-cyanoacrylate and (b) a polyfunctional cyanoacrylate having two or more 2-cyanoacryloyl groups, the number average molecular weight of the polyfunctional cyanoacrylate (b) is in the range from 1,000 to 50,000, and preferably from 2,000 to 30,000, and the content of the polyfunctional cyanoacrylate (b) is in the range from 1 to 400 parts by weight, and preferably from 1 to 200 parts by weight based on 100 parts by weight of the 2-cyanoacrylate (a).Type: GrantFiled: December 22, 2009Date of Patent: September 24, 2013Assignee: Toagosei Co., Ltd.Inventors: Kenichi Ishizaki, Muneaki Kano
-
Publication number: 20110251318Abstract: An adhesive composition is provided particularly excellent in thermal shock resistance for adhesive strength as well as high shear adhesive strength, peel adhesive strength and impact adhesive strength. The adhesive composition of the present invention contains (a) a 2-cyanoacrylate such as 2-ethoxyethyl 2-cyanoacrylate and (b) a polyfunctional cyanoacrylate having two or more 2-cyanoacryloyl groups, the number average molecular weight of the polyfunctional cyanoacrylate (b) is in the range from 1,000 to 50,000, and preferably from 2,000 to 30,000, and the content of the polyfunctional cyanoacrylate (b) is in the range from 1 to 400 parts by weight, and preferably from 1 to 200 parts by weight based on 100 parts by weight of the 2-cyanoacrylate (a).Type: ApplicationFiled: December 22, 2009Publication date: October 13, 2011Applicant: TOAGOSEI CO., LTD.Inventors: Kenichi Ishizaki, Muneaki Kano
-
Patent number: 5256615Abstract: Disclosed is a granular inorganic ion exchanger which is obtained by firing at 400.degree. C. or higher a granular molded product of a mixture of a metal alkoxide such as Si(OMe).sub.4 or hydrolyzate thereof, a clay mineral such as sepiolite and an inorganic ion exchanger such as antimony pentoxide and which has mechanical strength and heat resistance without losing its inherent ion exchangeability.Type: GrantFiled: May 6, 1992Date of Patent: October 26, 1993Assignee: Toagosei Chemical Industry, Co., Ltd.Inventors: Takuya Oomura, Hideki Kato, Nobuhiko Aiba, Noriyuki Yamamoto, Toshiro Hirose, Kenichi Ishizaki