Patents by Inventor Satoko YASUDA
Satoko YASUDA 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: 11306167Abstract: To provide a fluorinated elastic copolymer excellent in adhesion, processability, mechanical properties, heat resistance and chemical resistance. A fluorinated elastic copolymer having units based on a monomer (a), units based on a monomer (b) and optionally units based on a monomer (c), which has an iodine atom bonded to a terminal of a molecular chain and the unit based on the monomer (b) adjacent to the iodine atom, and which has a proportion of the units based on the monomer (b) of from 0.09 to 2.0 mol % to all units. Monomer (a): monomer selected from the group consisting of tetrafluoroethylene, hexafluoropropylene, vinylidene fluoride, chlorotrifluoroethylene, a perfluoro(alkyl vinyl ether) and 2,3,3,3-tetrafluoropropene; monomer (b): a monomer having at least one type of functional group selected from the group consisting of an epoxy group, a hydroxy group, a carbonyl group-containing group and an isocyanate group; monomer (c): a monomer selected from the group consisting of ethylene and propylene.Type: GrantFiled: April 29, 2020Date of Patent: April 19, 2022Assignee: AGC Inc.Inventors: Satoko Yasuda, Keisuke Yagi, Takehiro Kose, Yukiko Hattori, Toshikazu Yoneda
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Publication number: 20210163648Abstract: To provide a fluorinated copolymer excellent in low temperature properties and crosslinking property as a fluororubber, and a method for producing it. A fluorinated copolymer which has units based on tetrafluoroethylene, units based on propylene and units based on a compound represented by the following formula 1, and which has either one or both of iodine atoms and bromine atoms: CF2?CFO(Rf1O)nRf2??formula 1 wherein Rf1 is a C1-3 perfluoroalkylene group, Rf2 is a C1-6 perfluoroalkyl group, n is an integer of from 1 to 4, and in a case where n is from 2 to 4, a plurality of Rf1 may be the same or different.Type: ApplicationFiled: February 11, 2021Publication date: June 3, 2021Applicant: AGC Inc.Inventors: Satoko YASUDA, Takehiro KOSE, Yukiko HATTORI, Toshikazu YONEDA
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Patent number: 10839980Abstract: A covered electric wire has a core wire and a covering material made of a composition applied around the core wire. The covering material is a melt-moldable resin composition. The resin composition may be a fluororesin composition that includes a fluorinated elastomer and a melt-moldable fluororesin. The fluorinated elastomer can be dispersed in the fluororesin. The resin composition has a volume change after being immersed in an automatic transmission fluid at 165° C. for 70 hours of at most 10%, flexural modulus of at most 200 MPa, a rate of the change in tensile elongation after 2,000 hours of a thermal exposure test in the air at 200° C. of at most 30%, and a melting point of at least 215° C.Type: GrantFiled: October 18, 2018Date of Patent: November 17, 2020Assignee: AGC Inc.Inventor: Satoko Yasuda
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Patent number: 10787531Abstract: To provide a fluorinated elastic copolymer capable of obtaining a crosslinked rubber which is excellent in tensile strength and has a low compression set under high temperature conditions; a method for producing such a fluorinated elastic copolymer; a crosslinked rubber; and a method for producing such a crosslinked rubber. A fluorinated elastic copolymer having structural units based, respectively, on monomers (a), (b) and (c), and further having iodine atoms. Monomer (a): at least one member selected from the group consisting of tetrafluoroethylene, hexafluoropropylene, vinylidene fluoride, chlorotrifluoroethylene and perfluoro(alkyl vinyl ether). Monomer (b): at least one member selected from the group consisting of compounds represented by formula (I): CR1R2?CR3—R4—CR5?CR6R7 (I) (wherein R1, R2, R3, R5, R6 and R7 are each independently a hydrogen atom, a fluorine atom or a methyl group; and R4 is a C1-10 perfluoroalkylene group which may have an etheric oxygen atom inserted between carbon atoms).Type: GrantFiled: January 26, 2018Date of Patent: September 29, 2020Assignee: AGC Inc.Inventors: Keisuke Yagi, Takehiro Kose, Hiroki Nagai, Satoko Yasuda
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Publication number: 20200255567Abstract: To provide a fluorinated elastic copolymer excellent in adhesion, processability, mechanical properties, heat resistance and chemical resistance. A fluorinated elastic copolymer having units based on a monomer (a), units based on a monomer (b) and optionally units based on a monomer (c), which has an iodine atom bonded to a terminal of a molecular chain and the unit based on the monomer (b) adjacent to the iodine atom, and which has a proportion of the units based on the monomer (b) of from 0.09 to 2.0 mol % to all units. Monomer (a): monomer selected from the group consisting of tetrafluoroethylene, hexafluoropropylene, vinylidene fluoride, chlorotrifluoroethylene, a perfluoro(alkyl vinyl ether) and 2,3,3,3-tetrafluoropropene; monomer (b): a monomer having at least one type of functional group selected from the group consisting of an epoxy group, a hydroxy group, a carbonyl group-containing group and an isocyanate group; monomer (c): a monomer selected from the group consisting of ethylene and propylene.Type: ApplicationFiled: April 29, 2020Publication date: August 13, 2020Applicant: AGC Inc.Inventors: Satoko YASUDA, Keisuke Yagi, Takehiro Kose, Yukiko Hattori, Toshikazu Yoneda
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Publication number: 20190051429Abstract: To provide a covered electric wire using a resin composition which is excellent in flexibility and oil resistance, which is less susceptible to thermal discoloration and which is excellent in moldability. The covered electric wire comprises a core wire and a covering material made of a composition applied around the core wire, wherein the covering material is a melt-moldable resin composition, and, of the resin composition, the volume change after being immersed in an automatic transmission fluid at 165° C. for 70 hours is at most 10%, the flexural modulus is at most 200 MPa, the rate of change in tensile elongation after 2,000 hours of thermal exposure test in air at 200° C. is at most 30%, and the melting point is at least 215° C.Type: ApplicationFiled: October 18, 2018Publication date: February 14, 2019Applicant: AGC Inc.Inventor: Satoko YASUDA
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Publication number: 20180371228Abstract: To provide a fluororesin composition which is excellent in flexibility and oil resistance, is less susceptible to heat discoloration and is excellent in moldability. The fluororesin composition is made of a melt-kneaded product comprising a fluorinated elastomer having a storage shear modulus G? of at least 100 and a melt-moldable fluororesin having a melting point of at least 150° C., wherein the fluorinated elastomer is dispersed in the fluororesin, the content of the fluorinated elastomer is from 10 to 65 mass % to the total of the fluorinated elastomer and the fluororesin, and the total amount of the fluorinated elastomer and the fluororesin is at least 90 mass % to the fluororesin composition, and the storage modulus E? of the fluororesin composition at a temperature higher by 25° C. than the melting point of the fluororesin is at most 250 kPa.Type: ApplicationFiled: July 27, 2018Publication date: December 27, 2018Applicant: AGC Inc.Inventors: Satoko Yasuda, Hiroki Nagai, Eiichi Nishi, Toru Sasaki
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Publication number: 20180237628Abstract: To provide a crosslinkable composition containing a fluorinated copolymer, which is excellent in crosslinkability and gives a crosslinked product being capable of suppressing production of particles upon plasma irradiation, a crosslinked product obtained by crosslinking the composition, and a sealing material for a semiconductor production equipment, containing the crosslinked product. A crosslinkable composition comprising; a copolymer (X) having an iodine atom and also having structural units based on tetrafluoroethylene and structural units based on propylene, wherein the content of structural units based on vinylidene fluoride is less than 0.1 mol % in all of the structural units; an organic peroxide; a crosslinking aid; and at least one member selected from the group consisting of a quaternary ammonium salt, a quaternary phosphonium salt and an organic amine, wherein the metal element content is less than 1 part by mass based on 100 parts by mass of the copolymer (X).Type: ApplicationFiled: April 19, 2018Publication date: August 23, 2018Applicant: ASAHI GLASS COMPANY, LIMITEDInventors: Satoko YASUDA, Hiroki Nagai, Keisuke Yagi, Takehiro Kose, Takeshi Yamada
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Publication number: 20180148527Abstract: To provide a fluorinated elastic copolymer capable of obtaining a crosslinked rubber which is excellent in tensile strength and has a low compression set under high temperature conditions; a method for producing such a fluorinated elastic copolymer; a crosslinked rubber; and a method for producing such a crosslinked rubber. A fluorinated elastic copolymer having structural units based, respectively, on monomers (a), (b) and (c), and further having iodine atoms. Monomer (a): at least one member selected from the group consisting of tetrafluoroethylene, hexafluoropropylene, vinylidene fluoride, chlorotrifluoroethylene and perfluoro(alkyl vinyl ether). Monomer (b): at least one member selected from the group consisting of compounds represented by formula (I): CR1R2?CR3—R4—CR5?CR6R7 (I) (wherein R1, R2, R3, R5, R6 and R7 are each independently a hydrogen atom, a fluorine atom or a methyl group; and R4 is a C1-10 perfluoroalkylene group which may have an etheric oxygen atom inserted between carbon atoms).Type: ApplicationFiled: January 26, 2018Publication date: May 31, 2018Applicant: ASAHI GLASS COMPANY, LIMITEDInventors: Keisuke YAGI, Takehiro Kose, Hiroki Nagai, Satoko Yasuda
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Publication number: 20170218173Abstract: To provide a fluororubber composition excellent in formability, with which it is possible to produce a crosslinked fluororubber article excellent in surface smoothness, while maintaining rubber properties such as strength. A fluororubber composition comprising a fluororubber (A) and a glycerol ester (B) of a C14-20 unsaturated fatty acid, wherein the content of the glycerol ester (B) is from 0.8 to 4.0 parts by mass, based on 100 parts by mass of the fluororubber (A), and a crosslinked fluororubber article obtained by crosslinking the fluororubber composition.Type: ApplicationFiled: April 13, 2017Publication date: August 3, 2017Applicant: ASAHI GLASS COMPANY, LIMITEDInventors: Takeshi YAMADA, Satoko Yasuda, Ken Iruya
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Patent number: 9711257Abstract: To provide a fluorinated elastomer composition which is excellent in flexibility, heat resistance and flame retardance, and a molded product, cross-linked product and covered electric wire, using such a fluorinated elastomer composition. A fluorinated elastomer composition comprising a tetrafluoroethylene/propylene copolymer (a), an ethylene/tetrafluoroethylene copolymer (b), an ethylene copolymer (c) containing epoxy groups and a flame retardant (d), wherein the mass ratio [(a)/(b)] of (a) to (b) is from 70/30 to 40/60, the mass ratio [(b)/(c)] of (b) to (c) is from 100/0.1 to 100/10, and the content of (d) is from 0.1 to 30 parts by mass per 100 parts by mass of the total content of (a), (b) and (c).Type: GrantFiled: March 15, 2016Date of Patent: July 18, 2017Assignee: Asahi Glass Company, LimitedInventors: Ken Iruya, Satoko Yasuda, Daisuke Taguchi, Yasuhiko Matsuoka
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Patent number: 9701828Abstract: To provide a fluorinated elastomer composition which is excellent in heat discoloration resistance and moldability, and a molded product, cross-linked product and covered electric wire, using such a fluorinated elastomer composition. A fluorinated elastomer composition comprising a fluorinated rubber (a) and a fluorinated copolymer (b), wherein the fluorinated copolymer (b) has units (A) derived from tetrafluoroethylene and units (B) derived from ethylene in a molar ratio [(A)/(B)] of the units (A) to the units (B) of from 25/75 to 80/20; the fluorinated copolymer (b) has a crystallization temperature of from 100 to 210° C. and a melt flow rate of from 0.1 to 1,000 g/10 min.; and the mass ratio [(a)/(b)] of the fluorinated rubber (a) to the fluorinated copolymer (b) is from 80/20 to 20/80.Type: GrantFiled: March 15, 2016Date of Patent: July 11, 2017Assignee: Asahi Glass Company, LimitedInventors: Daisuke Taguchi, Satoko Yasuda, Takashi Sato
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Publication number: 20160196895Abstract: To provide a fluorinated elastomer composition which is excellent in flexibility, heat resistance and flame retardance, and a molded product, cross-linked product and covered electric wire, using such a fluorinated elastomer composition. A fluorinated elastomer composition comprising a tetrafluoroethylene/propylene copolymer (a), an ethylene/tetrafluoroethylene copolymer (b), an ethylene copolymer (c) containing epoxy groups and a flame retardant (d), wherein the mass ratio [(a)/(b)] of (a) to (b) is from 70/30 to 40/60, the mass ratio [(b)/(c)] of (b) to (c) is from 100/0.1 to 100/10, and the content of (d) is from 0.1 to 30 parts by mass per 100 parts by mass of the total content of (a), (b) and (c).Type: ApplicationFiled: March 15, 2016Publication date: July 7, 2016Applicant: Asahi Glass Company, LimitedInventors: Ken IRUYA, Satoko YASUDA, Daisuke TAGUCHI, Yasuhiko MATSUOKA
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Publication number: 20160194491Abstract: To provide a fluorinated elastomer composition which is excellent in heat discoloration resistance and moldability, and a molded product, cross-linked product and covered electric wire, using such a fluorinated elastomer composition. A fluorinated elastomer composition comprising a fluorinated rubber (a) and a fluorinated copolymer (b), wherein the fluorinated copolymer (b) has units (A) derived from tetrafluoroethylene and units (B) derived from ethylene in a molar ratio [(A)/(B)] of the units (A) to the units (B) of from 25/75 to 80/20; the fluorinated copolymer (b) has a crystallization temperature of from 100 to 210° C. and a melt flow rate of from 0.1 to 1,000 g/10 min.; and the mass ratio [(a)/(b)] of the fluorinated rubber (a) to the fluorinated copolymer (b) is from 80/20 to 20/80.Type: ApplicationFiled: March 15, 2016Publication date: July 7, 2016Applicant: Asahi Glass Company, LimitedInventors: Daisuke TAGUCHI, Satoko YASUDA, Takashi SATO