Patents by Inventor Ryusuke Sakoh

Ryusuke Sakoh 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: 20210215853
    Abstract: Provided is an antireflective member that has a water- and oil-repellent layer on a multi-layered antireflective layer and is capable of exhibiting excellent surface lubricity, water- and oil-repellent properties, and durability. The surface of the multi-layered antireflective layer on a base material has a root-mean-square surface roughness of 0.8 nm to 2.0 nm. The water- and oil-repellent layer has a thickness of 1 to 30 nm and is a cured product of water- and oil-repellents having as principal components a fluorooxyalkylene group-containing polymer modified organosilicon compound with the numerical average molecular weight of 4,500 to 10,000 of a fluoropolymer part and/or partial hydrolysis condensate thereof.
    Type: Application
    Filed: March 8, 2018
    Publication date: July 15, 2021
    Applicant: SHIN-ETSU CHEMICAL CO., LTD.
    Inventors: Yuji YAMANE, Lisa KATAYAMA, Ryusuke SAKOH, Takashi MATSUDA
  • Patent number: 11053410
    Abstract: A fluorochemical coating composition is provided comprising (A) a hydrolyzable group-containing silane modified with a fluorooxyalkylene-containing polymer and (B) a fluorooxyalkylene-containing polymer having an average molecular weight not higher than the average molecular weight of component (A) in a weight ratio (A)/(B) of 40/60 to 95/5. The composition forms on a substrate a water/oil repellent layer which does not detract from the visibility of the substrate.
    Type: Grant
    Filed: March 18, 2015
    Date of Patent: July 6, 2021
    Assignee: Shin-Etsu Chemical Co., Ltd.
    Inventors: Yuji Yamane, Shinichi Sato, Noriyuki Koike, Takashi Matsuda, Ryusuke Sakoh
  • Publication number: 20210189174
    Abstract: This fluorine-containing coating agent composition contains: (A) an organic silicon compound containing a hydrolyzable group or a hydroxy group modified by a fluorooxyalkylene group-containing polymer residue, and/or a partial (hydrolyzed) condensate thereof; and (B) an organic silicon compound containing a polyether group and a hydrolyzable group or a hydroxy group modified by a fluorooxyalkylene group-containing polymer residue, and/or a partial (hydrolyzed) condensate thereof, wherein the mixture mass ratio of component (A) and component (B) is 15:85-85:15. When the composition is applied as a surface treatment agent, the surface treatment agent containing the fluorine-containing coating agent composition can form a cured coating film which has excellent water repellency and oil repellency, and which has both excellent steel wool abrasion resistance and eraser rubber abrasion resistance.
    Type: Application
    Filed: April 19, 2018
    Publication date: June 24, 2021
    Applicant: SHIN-ETSU CHEMICAL CO., LTD.
    Inventors: Lisa KATAYAMA, Takashi MATSUDA, Yuji YAMANE, Ryusuke SAKOH
  • Patent number: 11001670
    Abstract: A surface treatment agent which comprises a fluoropolyether-group-containing polymer represented by the following formula (1) or (2) Rf1—[N(V)?(E)?]???(1) Rf1-[Q-(G)?-(E?)?-B]???(2) and/or a product of partial (hydrolytic) condensation of the polymer. The surface treatment agent forms a cured coating film excellent in terms of water and oil repellency and resistance to abrasion with erasers. (In formulae (1) and (2), Rf1 is a mono- or divalent polymer residue containing a fluorooxyalkylene group; N is C, Si, N, or a tri- to octavalent group optionally substituted by F; V is a monovalent group containing a hydroxy group or hydrolyzable group at the terminal; E is a monovalent group containing an oxyalkylene group; ? is 1 or 2; ? and ? are each 1-6, and ?+? is 2-7; Q is a single bond or a divalent group; G is a divalent group containing a hydroxy group or hydrolyzable group; E? is a divalent group containing an oxyalkylene group; B is H, an alkyl group, or a halogeno; ? is 0-10; and ? is 1-10.
    Type: Grant
    Filed: May 10, 2017
    Date of Patent: May 11, 2021
    Assignee: SHIN-ETSU CHEMICAL CO., LTD.
    Inventors: Ryusuke Sakoh, Takashi Matsuda, Yuji Yamane
  • Publication number: 20210130545
    Abstract: Provided is a water-repellent member in which a silica layer having a specific thickness and mainly composed of silica nanoparticles is provided on the outer surfaces of various substrates, and then a water- and oil-repellent layer having a specific thickness and containing a cured product of a fluorine-containing organosilicon compound as a main component is provided on the outer surface of the silica layer. The water-repellent member is obtained by a method comprising: a step for wet coating a dispersion containing silica nanoparticles and a solvent onto the outer surface of a substrate; a step for drying and removing the solvent from the dispersion; a step for wet coating a solution containing a fluorine-containing organosilicon compound and a solvent onto the outer surface of a silica layer formed by drying and removing the solvent; and a step for drying and removing the solvent from the solution to cure the fluorine-containing organosilicon compound.
    Type: Application
    Filed: June 12, 2018
    Publication date: May 6, 2021
    Applicant: SHIN-ETSU CHEMICAL CO., LTD.
    Inventors: Yuji YAMANE, Lisa KATAYAMA, Ryusuke SAKOH, Takashi MATSUDA
  • Publication number: 20210062039
    Abstract: According to the present invention, a surface treatment agent which contains a coating composition that contains (A) one or more compounds selected from among organosilane or siloxane compounds represented by formula (1) and partial (hydrolysis) condensation products of the compounds and (B) one or more compounds selected from among silane or siloxane compounds represented by formula (2) and partial (hydrolysis) condensation products of the compounds at a mass ratio of from 50:50 to 90:10 is able to form a cured coating film that has excellently low fingerprint visibility. (In formula (1), A represents —C(?O)OR1, —C(?O)NR12, —C(?O)SR1 or —P(?O)(OR1)2; R1 represents H, an alkyl group, an aryl group or an aralkyl group; Y represents a divalent organic group; R represents an alkyl group or a phenyl group; X represents a hydroxyl group or a hydrolyzable group; and n is 1-3.) (In formula (2), Rf represents a perfluoroalkylene group or a divalent perfluoropolyether group.
    Type: Application
    Filed: December 3, 2018
    Publication date: March 4, 2021
    Applicant: SHIN-ETSU CHEMICAL CO., LTD.
    Inventors: Seiya MORI, Ryusuke SAKOH
  • Publication number: 20200369887
    Abstract: Provided are: a (hydrolyzable) organosiloxane compound which is represented by general formula (1) and contains a lipophilic group capable of forming a cured film having excellent lipophilicity and wear resistance; and a surface treatment agent containing the compound. (In the formula, A is any one among —CH3, —C(?O)OR1, —C(?O)NR12, —C(?O)SR1, and —P(?O)(OR1)2; R1 is a hydrogen atom, a C1-30 alkyl group, a C6-30 aryl group, or a C7-30 aralkyl group; Y is independently a divalent organic group; W is independently a C1-4 alkyl group, a phenyl group, a hydroxyl group, or a hydrolyzable group; R is independently a C1-4 alkyl group or a phenyl group; X is independently a hydroxyl group or a hydrolyzable group; n is an integer of 1-3; and q is an integer of 1-3.
    Type: Application
    Filed: November 22, 2018
    Publication date: November 26, 2020
    Applicant: SHIN-ETSU CHEMICAL CO., LTD.
    Inventors: Seiya MORI, Ryusuke SAKOH
  • Publication number: 20200317864
    Abstract: A surface treatment agent which comprises a fluoropolyether-group-containing polymer represented by the following formula (1) or (2) Rf1—[N(V)?(E)?]???(1) Rf1-[Q-(G)?-(E?)?-B]???(2) and/or a product of partial (hydrolytic) condensation of the polymer. The surface treatment agent forms a cured coating film excellent in terms of water and oil repellency and resistance to abrasion with erasers. (In formulae (1) and (2), Re is a mono- or divalent polymer residue containing a fluorooxyalkylene group; N is C, Si, N, or a tri- to octavalent group optionally substituted by F; V is a monovalent group containing a hydroxy group or hydrolyzable group at the terminal; E is a monovalent group containing an oxyalkylene group; a is 1 or 2; ? and ? are each 1-6, and ?+? is 2-7; Q is a single bond or a divalent group; G is a divalent group containing a hydroxy group or hydrolyzable group; E? is a divalent group containing an oxyalkylene group; B is H, an alkyl group, or a halogeno; ? is 0-10; and ? is 1-10.
    Type: Application
    Filed: May 10, 2017
    Publication date: October 8, 2020
    Applicant: SHIN-ETSU CHEMICAL CO., LTD.
    Inventors: Ryusuke SAKOH, Takashi MATSUDA, Yuji YAMANE
  • Publication number: 20200283458
    Abstract: By using this organosilane compound represented by formula (1), a surface treatment agent that contains said (hydrolyzable) organosilane compound and/or a partial (hydrolysis) condensate thereof can form a cured film which exhibits excellent lipophilic properties and has a refractive index similar to the refractive index of sebum. (A is any one of —C(?O)OR1, —C(?O)NR12, —C(?O)SR1 and —P(?O)(OR1)2; R1 is a hydrogen atom, an alkyl group, an aryl group or an aralkyl group; Y is a divalent organic group; R is an alkyl group or a phenyl group; Xis a hydroxyl group or a hydrolyzable group; and n is 1-3.
    Type: Application
    Filed: September 26, 2018
    Publication date: September 10, 2020
    Applicant: SHIN-ETSU CHEMICAL CO., LTD.
    Inventors: Ryusuke SAKOH, Seiya MORI, Takashi MATSUDA, Yuji YAMANE
  • Publication number: 20200254482
    Abstract: This water-repellent, oil-repellent member is obtained via a method comprising: a step for wet-coating a substrate surface with a solution containing an organic silicon compound comprising multiple silanol groups and a solvent; a step for drying the solvent to form a primer layer; a step for wet-coating the primer layer with a solution containing a fluorine-containing compound and a solvent, followed by drying the solvent, or dry-coating with the fluorine-containing compound obtained by evaporating the solvent from the solution; and a step for curing the fluorine-containing compound to form a water-repellent, oil-repellent layer.
    Type: Application
    Filed: September 11, 2018
    Publication date: August 13, 2020
    Applicant: SHIN-ETSU CHEMICAL CO., LTD.
    Inventors: Yuji YAMANE, Lisa KATAYAMA, Ryusuke SAKOH, Takashi MATSUDA
  • Patent number: 10196483
    Abstract: A fluoropolyether-containing polymer-modified silane having formula (1) is provided wherein Rf is a fluorooxyalkyl or fluorooxyalkylene-containing polymer residue, Y is a divalent to hexavalent hydrocarbon group, R and R? are C1-C4 alkyl or phenyl, X and X? are hydroxyl or a hydrolyzable group, n is an integer of 1 to 3, a is an integer of 0 to 3, m is an integer of 1 to 5, and ? is 1 or 2. A surface treating agent comprising the silane has storage stability and cures into a water/oil repellent layer having weatherability.
    Type: Grant
    Filed: April 29, 2016
    Date of Patent: February 5, 2019
    Assignee: Shin-Etsu Chemical Co., Ltd.
    Inventors: Ryusuke Sakoh, Takashi Matsuda, Yuji Yamane
  • Patent number: 10093773
    Abstract: A fluoropolyether-containing polymer-modified silane having (1) is provided wherein Rf is a fluorooxyalkyl or fluorooxyalkylene-containing polymer residue, Y is a divalent to hexavalent hydrocarbon group, R is C1-C4 alkyl or phenyl, X is a hydrolyzable group, n is an integer of 1 to 3, m is an integer of 1 to 5, and ? is 1 or 2. A surface treating agent comprising the silane or partial hydrolytic condensate thereof cures under mild conditions into a water/oil repellent layer having abrasion resistance, weatherability and low dynamic friction.
    Type: Grant
    Filed: March 18, 2015
    Date of Patent: October 9, 2018
    Assignee: Shin-Etsu Chemical Co., Ltd.
    Inventors: Ryusuke Sakoh, Takashi Matsuda, Yuji Yamane
  • Patent number: 9850399
    Abstract: A water/oil repellent treatment agent which includes a specific polymer-modified silane having a fluorooxyalkylene structure on the main chain and a hydrolyzable group at the end of the molecular chain, and/or a partial (co)hydrolyzate/condensate thereof, has a percent weight loss following one hour of exposure at 250° C. of 10% or less. The treatment forms a layer having excellent water and oil repellency, scuff resistance and mold release properties even when heated to 250° C. or more.
    Type: Grant
    Filed: October 22, 2015
    Date of Patent: December 26, 2017
    Assignee: Shin-Etsu Chemical Co., Ltd.
    Inventors: Yuji Yamane, Ryusuke Sakoh, Takashi Matsuda
  • Patent number: 9809679
    Abstract: A fluoropolyether-containing polymer-modified silane having a hydroxyl group protected with a carbonyl, sulfonyl or phosphoryl group may be synthesized without forming by-products.
    Type: Grant
    Filed: May 19, 2016
    Date of Patent: November 7, 2017
    Assignee: Shin-Etsu Chemical Co., Ltd.
    Inventors: Ryusuke Sakoh, Takashi Matsuda, Yuji Yamane
  • Patent number: 9790322
    Abstract: A fluoropolyether-containing polymer-modified silane has general formula (1) wherein Rf is a monovalent fluorooxyalkyl or divalent fluorooxyalkylene-containing polymer residue, Y is a divalent to hexavalent hydrocarbon group which may have a silicon atom and/or a siloxane bond, W is a divalent to hexavalent hydrocarbon group which may have a silicon atom and/or a siloxane bond, R is independently an alkyl of 1 to 4 carbon atoms or phenyl, X is independently hydroxyl or a hydrolyzable group, the letters n, a and m are respectively integers from 1 to 3, 1 to 5 and 1 to 5, and ? is 1 or 2. A surface treating agent containing this silane and/or a partial (hydrolytic) condensate thereof, when applied to an article, forms a coat of excellent water/oil repellency and abrasion resistance.
    Type: Grant
    Filed: April 12, 2016
    Date of Patent: October 17, 2017
    Assignee: SHIN-ETSU CHEMICAL CO., LTD.
    Inventors: Ryusuke Sakoh, Takashi Matsuda, Yuji Yamane
  • Patent number: 9771384
    Abstract: A fluorochemical surface treating agent comprising a hydrolyzable group-containing silane modified with a fluorooxyalkylene-containing polymer and/or a partial hydrolytic condensate thereof forms a water/oil repellent layer having chemical resistance and mar resistance.
    Type: Grant
    Filed: July 28, 2015
    Date of Patent: September 26, 2017
    Assignee: Shin-Etsu Chemical Co., Ltd.
    Inventors: Yuji Yamane, Takashi Matsuda, Ryusuke Sakoh, Noriyuki Koike
  • Patent number: 9644115
    Abstract: A fluorochemical coating composition is provided comprising (A) a hydrolyzable group-containing silane modified with a fluoropolyether-containing polymer and (B) a hydrolyzable group-containing silane modified with a fluoropolyether-polysiloxane copolymer in a weight ratio (A)/(B) of 40/60 to 95/5. The composition forms on a substrate a water/oil repellent layer which does not detract from the visibility of the substrate.
    Type: Grant
    Filed: March 20, 2015
    Date of Patent: May 9, 2017
    Assignee: Shin-Etsu Chemical Co., Ltd.
    Inventors: Yuji Yamane, Takashi Matsuda, Ryusuke Sakoh
  • Patent number: 9534082
    Abstract: A fluoropolyether-containing polymer of formula (1) is novel wherein Rf is a polymer residue containing a monovalent fluorooxyalkyl or divalent fluorooxyalkylene group, Z is a divalent hydrocarbon group, and ? is 1 or 2. The polymer may be converted into a fluoropolyether-containing polymer-modified silane, which forms a water/oil repellent coating having weatherability.
    Type: Grant
    Filed: March 25, 2015
    Date of Patent: January 3, 2017
    Assignee: Shin-Etsu Chemical Co., Ltd.
    Inventor: Ryusuke Sakoh
  • Publication number: 20160355638
    Abstract: A fluoropolyether-containing polymer-modified silane having a hydroxyl group protected with a carbonyl, sulfonyl or phosphoryl group may be synthesized without forming by-products.
    Type: Application
    Filed: May 19, 2016
    Publication date: December 8, 2016
    Applicant: Shin-Etsu Chemical Co., Ltd.
    Inventors: Ryusuke SAKOH, Takashi Matsuda, Yuji Yamane
  • Publication number: 20160319071
    Abstract: A fluoropolyether-containing polymer-modified silane having formula (1) is provided wherein Rf is a fluorooxyalkyl or fluorooxyalkylene-containing polymer residue, Y is a divalent to hexavalent hydrocarbon group, R and R? are C1-C4 alkyl or phenyl, X and X? are hydroxyl or a hydrolyzable group, n is an integer of 1 to 3, a is an integer of 0 to 3, m is an integer of 1 to 5, and ? is 1 or 2. A surface treating agent comprising the silane has storage stability and cures into a water/oil repellent layer having weatherability.
    Type: Application
    Filed: April 29, 2016
    Publication date: November 3, 2016
    Applicant: Shin-Etsu Chemical Co., Ltd.
    Inventors: Ryusuke SAKOH, Takashi MATSUDA, Yuji YAMANE