Patents by Inventor Sayaka SAKURAI
Sayaka SAKURAI 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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Publication number: 20240043639Abstract: The present invention provides a cured film of a mixed composition of an organosilicon compound (A) including a fluoropolyether structure and an organosilicon compound (C) having an amino group or an amine skeleton, in which, when the elements constituting one side surface (W) of the cured film and amounts thereof are measured by X-ray photoelectron spectroscopy (XPS), the cured film has an F content of 60 atom % or more and an O content of 17 atom % or more.Type: ApplicationFiled: January 21, 2022Publication date: February 8, 2024Applicant: SUMITOMO CHEMICAL COMPANY, LIMITEDInventors: Michiru DAIMON, Sayaka SAKURAI, Tomohiro ITO
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Publication number: 20220213321Abstract: A mixed composition including an organosilicon compound (A) in which at least one trialkylsilyl group-containing molecular chain and at least one hydrolyzable group are bonded to a silicon atom, a metal compound (B), an acid (C), and water (D), in which a molar ratio (C/D) of the acid (C) to the water (D) is 0.002 to 0.15.Type: ApplicationFiled: April 1, 2020Publication date: July 7, 2022Applicant: SUMITOMO CHEMICAL COMPANY, LIMITEDInventors: Masayoshi TOKUDA, Sayaka SAKURAI
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Publication number: 20220195240Abstract: The composition of the present invention is a mixed composition including at least one metal compound (G) selected from a metal compound represented by the following formula (G1) and a condensate thereof, a polysilazane (F), and a solvent (I), in which an amount of the polysilazane (F) is 0.01% by mass or more and less than 50% by mass. M(Rg10)r(Ag1)m-r??(G1) In formula (G1), M represents Al, Fe, In, Ge, Hf, Si, Ti, Sn, Zr, or Ta, Rg10 represents a hydrocarbon chain-containing group or a hydrogen atom, r is 0 or 1, a plurality of Ag1 each independently represent a hydrolyzable group, and m is an integer of 3 to 5 in accordance with the metal atom M.Type: ApplicationFiled: April 1, 2020Publication date: June 23, 2022Applicant: SUMITOMO CHEMICAL COMPANY, LIMITEDInventors: Sayaka SAKURAI, Masayoshi TOKUDA, Tomohiro ITO
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Publication number: 20220185993Abstract: The composition of the present invention is a mixed composition including at least one metal compound (G) selected from a metal compound represented by the following formula (G1) and a condensate thereof, a polysilazane (F), and a compound (H) including a siloxane chain. M(Rg10)r(Ag1)m-r (G1) wherein M represents Al, Fe, In, Ge, Hf, Si, Ti, Sn, Zr, or Ta, Rg10 represents a hydrocarbon chain-containing group or a hydrogen atom, r is 0 or 1, a plurality of Ag1 each independently represent a hydrolyzable group, and m is an integer of 3 to 5 in accordance with the metal atom M.Type: ApplicationFiled: April 1, 2020Publication date: June 16, 2022Applicant: SUMITOMO CHEMICAL COMPANY, LIMITEDInventors: Masayoshi TOKUDA, Sayaka SAKURAI, Tomohiro ITO
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Publication number: 20220184657Abstract: The present invention aims at providing a coating film excellent in water repellency and oil repellency and further excellent in wear resistance, and a layered body comprising said coating film formed on a base material and a method for manufacturing the same. The present invention provides a coating film having at least an outermost surface layer (M) and a layer (K1) in contact with the layer (M), wherein a density of the layer (M) is 0.7 g/cm3 or more and less than 1.0 g/cm3, and a density of the layer (K1) is 1.0 g/cm3 or more and less than 2.2 g/cm3. The layer (M) preferably has a polydimethylsiloxane skeleton and/or a trialkylsilyl group.Type: ApplicationFiled: April 1, 2020Publication date: June 16, 2022Applicant: SUMITOMO CHEMICAL COMPANY, LIMITEDInventors: Sayaka SAKURAI, Masayoshi TOKUDA
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Publication number: 20220185968Abstract: A mixed composition including an organosilicon compound (A) in which at least one trialkylsilyl group-containing molecular chain and at least one hydrolyzable group are bonded to a silicon atom, a metal compound (B), an acid (C), and water (D), in which a ratio [D/(A+B)] of a molar amount of the water (D) to a total molar amount of the organosilicon compound (A) and the metal compound (B) is 3.1 to 130.Type: ApplicationFiled: April 1, 2020Publication date: June 16, 2022Applicant: SUMITOMO CHEMICAL COMPANY, LIMITEDInventors: Masayoshi TOKUDA, Sayaka SAKURAI
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Publication number: 20220186028Abstract: A mixed composition containing an organosilicon compound (A) and a silicon compound (B), wherein the organosilicon compound (A) is an organosilicon compound in which at least one trialkylsilyl group-containing molecular chain and at least one hydrolyzable group are bonded to a silicon atom, the silicon compound (B) is one or more silicon compounds selected from the group consisting of a silicon compound (b) represented by the following formula (b) and a condensate (bb) thereof, and in a chromatogram obtained by GPC chromatography of the mixed composition, a weight average molecular weight Mw in terms of standard polystyrene of a compound derived from at least one of the organosilicon compound (A) and the silicon compound (B) is 2000 to 12000, Si(X)p(ORb)4?p??(b) wherein X is an alkyl group having 1 to 6 carbon atoms or a hydrogen atom, Rb is an alkyl group having 1 to 6 carbon atoms, and p is an integer of 0 to 3.Type: ApplicationFiled: April 1, 2020Publication date: June 16, 2022Applicant: SUMITOMO CHEMICAL COMPANY, LIMITEDInventors: Sayaka SAKURAI, Masayoshi TOKUDA
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Patent number: 11136473Abstract: It is an object of the present invention to provide a coating film capable of realizing satisfactory sliding properties in addition to water- and oil-repellent properties and wear resistance evaluated by a static contact angle, and a coating composition for obtaining the coating film. The present invention is directed to a fluorine-containing coating film which has a root mean square roughness of less than 3.5 nm and has a perfluoropolyether structure. It is preferred that the coating film has a polysiloxane backbone and further has a structure in which a fluoroalkyl group is directly bonded to a silicon atom of the polysiloxane backbone, and that a sliding angle of 6 ?L of a water droplet is 24.3° or less, or a speed of 20 ?L of a water droplet sliding on a coating film inclined at 32° is 0.1 cm/second or more.Type: GrantFiled: January 10, 2017Date of Patent: October 5, 2021Assignee: SUMITOMO CHEMICAL COMPANY, LIMITEDInventors: Sayaka Sakurai, Yasuharu Shimazaki, Hidekazu Yoshida
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Patent number: 10975203Abstract: It is an object to provide a composition used for formation of a coating film which simultaneously attains water repellency as well as heat resistance and light resistance. The composition of the present invention includes an organosilicon compound (a) which has at least one trialkylsilyl group and has two or more hydrolyzable silicon groups, and a metal compound (b) in which at least one hydrolyzable group is bonded to a metal atom.Type: GrantFiled: December 19, 2016Date of Patent: April 13, 2021Assignee: SUMITOMO CHEMICAL COMPANY, LIMITEDInventors: Sayaka Sakurai, Hidenori Hanaoka
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Patent number: 10759944Abstract: The object of the present invention is to provide a polydialkylsiloxane backbone containing film excellent in durability against hot water. The film of the present invention comprises a polydialkylsiloxane backbone, wherein the ratio of carbon atoms to silicon atoms (C/Si) is not less than 0.93 and less than 1.38 in terms of moles. In the film, the magnitude of a contact angle change ratio dW represented by a specific formula can be not less than ?10% provided that ?0 is an initial contact angle of water, and ?W is a contact angle of water on the film immersed in ion-exchanged water of 70° C. for 24 hours.Type: GrantFiled: April 26, 2017Date of Patent: September 1, 2020Assignee: SUMITOMO CHEMICAL COMPANY, LIMITEDInventors: Sayaka Sakurai, Hidenori Hanaoka, Yasuharu Shimazaki
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Publication number: 20200123327Abstract: It is an object to provide a composition used for formation of a coating film which simultaneously attains water repellency as well as heat resistance and light resistance. The composition of the present invention includes an organosilicon compound (a) which has at least one trialkylsilyl group and has two or more hydrolyzable silicon groups, and a metal compound (b) in which at least one hydrolyzable group is bonded to a metal atom.Type: ApplicationFiled: December 19, 2016Publication date: April 23, 2020Applicant: SUMITOMO CHEMICAL COMPANY, LIMITEDInventors: Sayaka SAKURAI, Hidenori HANAOKA
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Patent number: 10472378Abstract: The object of the present invention is to attain water repellency as well as the heat resistance and the light resistance. the transparent film of the present invention comprises: a polysiloxane backbone; and a trialkylsilyl containing molecular chain bonded to a part of silicon atoms forming the polysiloxane backbone, wherein alkyl groups in the trialkylsilyl containing molecular chain may be replaced by fluoroalkyl groups, and the transparent film satisfies at least one of the relationships of: (BH?A0)/A0×100(%)??27(%); and (BL?A0)/A0×100(%)??15(%), provided that A0 is an initial contact angle of a liquid droplet on the transparent film, BH is a contact angle of a liquid droplet on the transparent film incubated at 200° C. for 24 hours, and BL is a contact angle of a liquid droplet on the transparent film irradiated by a xenon lamp with an intensity of 250 W for 100 hours.Type: GrantFiled: October 27, 2015Date of Patent: November 12, 2019Assignee: SUMITOMO CHEMICAL COMPANY, LIMITEDInventors: Sayaka Sakurai, Tomonori Miyamoto, Ryu Takeko
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Patent number: 10400137Abstract: The present invention aims to provide a water-repellant and oil-repellant coating composition which has good water-repellant and oil-repellant characteristics and further improves abrasion resistance, and a transparent film produced therefrom. The present invention is a water-repellant and oil-repellant coating composition comprising a first organic silicon compound (A) in which a fluorine-containing group having a perfluoroalkyl group or a perfluoropolyether group on the free end side thereof and a hydrolyzable group are bonded to a silicon atom thereof, and a second organic silicon compound (B) that is a hydrolyzable silane oligomer or a compound in which a carbon fluoride-containing group and a hydrolyzable group are bonded to a silicon atom thereof and that has a vapor pressure at 100° C. of 1 atm or less.Type: GrantFiled: November 9, 2015Date of Patent: September 3, 2019Assignee: SUMITOMO CHEMICAL COMPANY, LIMITEDInventors: Yoshihiro Harada, Sayaka Sakurai, Ryu Takeko
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Patent number: 10370546Abstract: The object of the present invention is to provide a water/oil-repellent coating composition for forming a film capable of attaining both water/oil repellency and abrasion resistance. The water/oil-repellent coating composition comprises: an organosilicon compound (A) and a metal compound (B), wherein at least one first hydrocarbon chain-containing group and at least one hydrolyzable group are bonded to a silicon atom in the organosilicon compound (A), where in at least one hydrolyzable group is bonded to a metal atom in the metal compound (B), wherein a second hydrocarbon chain-containing group having a length shorter than the length of the first hydrocarbon chain-containing group may be bonded to the metal atom in the metal compound (B), and wherein a molar ratio of the metal compound B) to the organosilicon compound (A) as metal compound (B)/organosilicon compound (A) is not less than 18 and not more than 48.Type: GrantFiled: October 27, 2015Date of Patent: August 6, 2019Assignee: SUMITOMO CHEMICAL COMPANY, LIMITEDInventors: Yasuharu Shimazaki, Sayaka Sakurai, Tomonori Miyamoto, Atsushi Hozumi, Chihiro Urata
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Publication number: 20190119502Abstract: The object of the present invention is to provide a polydialkylsiloxane backbone containing film excellent in durability against hot water. The film of the present invention comprises a polydialkylsiloxane backbone, wherein the ratio of carbon atoms to silicon atoms (C/Si) is not less than 0.93 and less than 1.38 in terms of moles. In the film, the magnitude of a contact angle change ratio dW represented by a specific formula can be not less than ?10% provided that ?0 is an initial contact angle of water, and ?W is a contact angle of water on the film immersed in ion-exchanged water of 70° C. for 24 hours.Type: ApplicationFiled: April 26, 2017Publication date: April 25, 2019Applicant: SUMITOMO CHEMICAL COMPANY, LIMITEDInventors: Sayaka SAKURAI, Hidenori HANAOKA, Yasuharu SHIMAZAKI
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Publication number: 20190048229Abstract: It is an object of the present invention to provide a coating film capable of realizing satisfactory sliding properties in addition to water- and oil-repellent properties and wear resistance evaluated by a static contact angle, and a coating composition for obtaining the coating film. The present invention is directed to a fluorine-containing coating film which has a root mean square roughness of less than 3.5 nm and has a perfluoropolyether structure. It is preferred that the coating film has a polysiloxane backbone and further has a structure in which a fluoroalkyl group is directly bonded to a silicon atom of the polysiloxane backbone, and that a sliding angle of 6 ?L of a water droplet is 24.3° or less, or a speed of 20 ?L of a water droplet sliding on a coating film inclined at 32° is 0.1 cm/second or more.Type: ApplicationFiled: January 10, 2017Publication date: February 14, 2019Applicant: SUMITOMO CHEMICAL COMPANY, LIMITEDInventors: Sayaka SAKURAI, Yasuharu SHIMAZAKI, Hidekazu YOSHIDA
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Publication number: 20180230331Abstract: The present invention aims to provide a water-repellant and oil-repellant coating composition which has good water-repellant and oil-repellant characteristics and further improves abrasion resistance, and a transparent film produced therefrom. The present invention is a water-repellant and oil-repellant coating composition comprising a first organic silicon compound (A) in which a fluorine-containing group having a perfluoroalkyl group or a perfluoropolyether group on the free end side thereof and a hydrolyzable group are bonded to a silicon atom thereof, and a second organic silicon compound (B) that is a hydrolyzable silane oligomer or a compound in which a carbon fluoride-containing group and a hydrolyzable group are bonded to a silicon atom thereof and that has a vapor pressure at 100° C. of 1 atm or less.Type: ApplicationFiled: November 9, 2015Publication date: August 16, 2018Applicant: SUMITOMO CHEMICAL COMPANY, LIMITEDInventors: Yoshihiro HARADA, Sayaka SAKURAI, Ryu TAKEKO
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Publication number: 20170313902Abstract: The object of the present invention is to provide a water/oil-repellent coating composition for forming a film capable of attaining both water/oil repellency and abrasion resistance. The water/oil-repellent coating composition comprises: an organosilicon compound (A) and a metal compound (B), wherein at least one first hydrocarbon chain-containing group and at least one hydrolyzable group are bonded to a silicon atom in the organosilicon compound (A), where in at least one hydrolyzable group is bonded to a metal atom in the metal compound (B), wherein a second hydrocarbon chain-containing group having a length shorter than the length of the first hydrocarbon chain-containing group may be bonded to the metal atom in the metal compound (B), and wherein a molar ratio of the metal compound B) to the organosilicon compound (A) as metal compound (B)/organosilicon compound (A) is not less than 18 and not more than 48.Type: ApplicationFiled: October 27, 2015Publication date: November 2, 2017Applicants: SUMITOMO CHEMICAL COMPANY, LIMITED, NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGYInventors: Yasuharu SHIMAZAKI, Sayaka SAKURAI, Tomonori MIYAMOTO, Atsushi HOZUMI, Chihiro URATA
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Publication number: 20170313728Abstract: The object of the present invention is to attain water repellency as well as the heat resistance and the light resistance. the transparent film of the present invention comprises: a polysiloxane backbone; and a trialkylsilyl containing molecular chain bonded to a part of silicon atoms forming the polysiloxane backbone, wherein alkyl groups in the trialkylsilyl containing molecular chain may be replaced by fluoroalkyl groups, and the transparent film satisfies at least one of the relationships of: (BH?A0)/A0×100(%)??27(%); and (BL?A0)/A0×100(%)??15(%), provided that A0 is an initial contact angle of a liquid droplet on the transparent film, BH is a contact angle of a liquid droplet on the transparent film incubated at 200° C. for 24 hours, and BL is a contact angle of a liquid droplet on the transparent film irradiated by a xenon lamp with an intensity of 250 W for 100 hours.Type: ApplicationFiled: October 27, 2015Publication date: November 2, 2017Applicant: SUMITOMO CHEMICAL COMPANY, LIMITEDInventors: Sayaka SAKURAI, Tomonori MIYAMOTO, Ryu TAKEKO