Patents by Inventor Muneo Kudo

Muneo Kudo 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: 20200385530
    Abstract: One of the purposes of the present invention is to provide a silicone which has polymerizable groups at the both terminals and a hydrophilic side chain having three or four hydroxyl groups, is colorless and transparent and is well compatible with another monomer, particularly with hydrophilic monomer, and a method for preparing the same. The present inventor has made research to solve the afore-mentioned problems and found that a silicone represented by the formula (1), which has an unbranched or branched alkyl group represented by —CpH2p+1?q(OH) and a hydrophilic side chain containing an ether bond, has no coloration and is well compatible with other hydrophilic monomers. Therefore, the silicone polymerizes with a monomer having high hydrophilicity to give a colorless, transparent and highly hydrophilic copolymer.
    Type: Application
    Filed: February 15, 2019
    Publication date: December 10, 2020
    Applicant: SHIN-ETSU CHEMICAL CO., LTD.
    Inventor: Muneo KUDO
  • Publication number: 20170073473
    Abstract: The present invention provides a silicone having a bis(trialkylsilyl)aminopropyl group at one terminal and represented by the following general formula [II]: R?R2SiO(R2SiO)mR2SiC3H6N(SiR3)2??[II] wherein m is an integer of from 1 to 200, R? is an alkyl group having 1 to 4 carbon atoms, and R is an alkyl group having 1 to 10 carbon atoms.
    Type: Application
    Filed: August 31, 2016
    Publication date: March 16, 2017
    Applicant: SHIN-ETSU CHEMICAL CO., LTD.
    Inventors: Shoji ICHINOHE, Muneo KUDO
  • Patent number: 9567441
    Abstract: One of the purposes of the present invention is to provide a polysiloxane which has polymerizable groups at the both terminals, is well compatible with another hydrophilic monomer, and provides a (co)polymer having improved durability of mechanical strengths. The present invention provides a compound represented by the formula (1) having a group represented by the formula (3) as a hydrophilic side chain, which is characterized in that the hydrophilic side chain has an alkyl group having three hydroxyl groups and no ether bond. Further, the present invention provides a method for preparing the silicone.
    Type: Grant
    Filed: April 22, 2016
    Date of Patent: February 14, 2017
    Assignee: SHIN-ETSU CHEMICAL CO., LTD.
    Inventor: Muneo Kudo
  • Publication number: 20160311981
    Abstract: One of the purposes of the present invention is to provide a polysiloxane which has polymerizable groups at the both terminals, is well compatible with another hydrophilic monomer, and provides a (co)polymer having improved durability of mechanical strengths. The present invention provides a compound represented by the formula (1) having a group represented by the formula (3) as a hydrophilic side chain, which is characterized in that the hydrophilic side chain has an alkyl group having three hydroxyl groups and no ether bond. Further, the present invention provides a method for preparing the silicone.
    Type: Application
    Filed: April 22, 2016
    Publication date: October 27, 2016
    Applicant: SHIN-ETSU CHEMICAL CO., LTD.
    Inventor: Muneo KUDO
  • Patent number: 9353135
    Abstract: One of the purposes of the present invention is to provide a compound which is a polymerizable monomer having a specific number of silicon atoms and a specific number of fluorine atoms and to provide a method for preparing the compound. The present invention provides a compound represented by the following formula (1): wherein m is an integer of from 2 to 10, n is an integer of from 1 to 3, R1 is, independently of each other, an alkyl group having 1 to 6 carbon atoms, and R2 is, independently of each other, an alkylene group having 1 to 6 carbon atoms or a fluoroalkylene group having 1 to 6 carbon atoms, R3 is an alkyl group having 1 to 4 carbon atoms, and R4, R5 and R6 are, independently of each other, a hydrogen atom or a methyl group.
    Type: Grant
    Filed: March 16, 2015
    Date of Patent: May 31, 2016
    Assignee: SHIN-ETSU CHEMICAL CO., LTD.
    Inventors: Muneo Kudo, Shoji Ichinohe, Tomoyuki Goto
  • Patent number: 9284339
    Abstract: The purpose is to provide a silicone compound which is well compatible with polymerizable silicone monomers and other polymerizable monomers to provide a polymer having high oxygen permeability, excellent hydrophilicity and anti-staining property, excellent dimension stability, and enough durability of mechanical strength not to deteriorate in a phosphate buffer solution. The other purpose is to provide a silicone compound having a high blocked terminal ratio and a high ratio of one specific structure and a method for preparing the silicone compound. The invention provides a compound represented by the following formula (1). Further, the invention provides a method for preparing the compound, use of the compound as an ophthalmic monomer, a polymer having repeating units derived from the aforesaid compound and an ophthalmic device composed of the polymer.
    Type: Grant
    Filed: June 4, 2015
    Date of Patent: March 15, 2016
    Assignee: SHIN-ETSU CHEMICAL CO., LTD.
    Inventor: Muneo Kudo
  • Patent number: 9284338
    Abstract: One of the purposes of the present invention is to provide a compound which is a polymerizable monomer having a specific number of silicon atoms and a specific number of fluorine atoms, has a higher purity, is suitable as an ophthalmic monomer, is well compatible with another (meth)acryl monomer, and provides a polymer having excellent hydrophilicity, anti-staining property and durability of mechanical strength and to provide a method for preparing the compound. The present invention provides a compound represented by the following formula (1). Further, the present invention provides a method for preparing the compound, a polymer having repeating units derived from the aforesaid compound and an ophthalmic device composed of the polymer.
    Type: Grant
    Filed: June 3, 2015
    Date of Patent: March 15, 2016
    Assignee: SHIN-ETSU CHEMICAL CO., LTD.
    Inventors: Muneo Kudo, Shoji Ichinohe, Tomoyuki Goto
  • Patent number: 9280077
    Abstract: There is provided an electrostatic image developing toner less likely to cause image degradation even when used for a long period, by controlling CCA particles present on surfaces of toner particles and thereby keeping an amount of tribocharge generated between the toner and a magnetic carrier or the like constant. A charge control agent composition for external addition for controlling charge amount of toner particles includes: at least two types of carrier particles different in average particle size of primary particles; and a charge control agent (CCA), and an electrostatic image developing toner is constituted of a mixture of toner particles and the aforesaid charge control agent composition for external addition.
    Type: Grant
    Filed: February 25, 2014
    Date of Patent: March 8, 2016
    Assignees: MORIMURA CHEMICALS LIMITED, SHIN-ETSU CHEMICAL CO., LTD.
    Inventors: Koichi Tsunemi, Toshihiko Oguchi, Atsushi Suka, Takashi Iimura, Kazuyuki Matsumura, Muneo Kudo, Masaki Tanaka, Yoshiteru Sakatsume
  • Patent number: 9266985
    Abstract: One of the purposes of the present invention is to provide a silicone compound which has a specific number of silicon atoms, is well compatible with (meth)acryl monomers, is suitable as an ophthalmic monomer and provides a polymer having excellent durability of mechanical strength in a buffered phosphate solution. Another purpose of the present invention is to provide a silicone compound which functions well as a crosslinking agent for a polymerizable monomer. Further, another purpose is to provide a method for preparing the silicone compound, in particular the silicone compound having one specific structure at a high ratio. In the first aspect, the present invention provides a compound represented by the following formula (1-1): and a method for preparing the silicone compound. In the second aspect, the present invention provides a compound represented by the following formula (2-1): and a method for preparing the silicone compound.
    Type: Grant
    Filed: November 13, 2014
    Date of Patent: February 23, 2016
    Assignee: SHIN-ETSU CHEMICAL CO., LTD.
    Inventors: Muneo Kudo, Shoji Ichinohe
  • Publication number: 20150361114
    Abstract: The purpose is to provide a silicone compound which is well compatible with polymerizable silicone monomers and other polymerizable monomers to provide a polymer having high oxygen permeability, excellent hydrophilicity and anti-staining property, excellent dimension stability, and enough durability of mechanical strength not to deteriorate in a phosphate buffer solution. The other purpose is to provide a silicone compound having a high blocked terminal ratio and a high ratio of one specific structure and a method for preparing the silicone compound. The invention provides a compound represented by the following formula (1). Further, the invention provides a method for preparing the compound, use of the compound as an ophthalmic monomer, a polymer having repeating units derived from the aforesaid compound and an ophthalmic device composed of the polymer.
    Type: Application
    Filed: June 4, 2015
    Publication date: December 17, 2015
    Applicant: SHIN-ETSU CHEMICAL CO., LTD.
    Inventor: Muneo KUDO
  • Publication number: 20150361113
    Abstract: One of the purposes of the present invention is to provide a compound which is a polymerizable monomer having a specific number of silicon atoms and a specific number of fluorine atoms, has a higher purity, is suitable as an ophthalmic monomer, is well compatible with another (meth)acryl monomer, and provides a polymer having excellent hydrophilicity, anti-staining property and durability of mechanical strength and to provide a method for preparing the compound. The present invention provides a compound represented by the following formula (1). Further, the present invention provides a method for preparing the compound, a polymer having repeating units derived from the aforesaid compound and an ophthalmic device composed of the polymer.
    Type: Application
    Filed: June 3, 2015
    Publication date: December 17, 2015
    Inventors: Muneo KUDO, Shoji ICHINOHE, Tomoyuki GOTO
  • Patent number: 9169275
    Abstract: Organopolysiloxanes containing a sulfide-containing organic group, a long-chain alkyl group, and a hydrolyzable group are novel. The organopolysiloxanes are effective for improving the shelf stability of epoxy resin compositions.
    Type: Grant
    Filed: June 26, 2013
    Date of Patent: October 27, 2015
    Assignee: SHIN-ETSU CHEMICAL CO., LTD.
    Inventors: Munenao Hirokami, Kazuhiro Tsuchida, Muneo Kudo
  • Publication number: 20150266905
    Abstract: One of the purposes of the present invention is to provide a compound which is a polymerizable monomer having a specific number of silicon atoms and a specific number of fluorine atoms and to provide a method for preparing the compound. The present invention provides a compound represented by the following formula (1): wherein m is an integer of from 2 to 10, n is an integer of from 1 to 3, R1 is, independently of each other, an alkyl group having 1 to 6 carbon atoms, and R2 is, independently of each other, an alkylene group having 1 to 6 carbon atoms or a fluoroalkylene group having 1 to 6 carbon atoms, R3 is an alkyl group having 1 to 4 carbon atoms, and R4, R5 and R6 are, independently of each other, a hydrogen atom or a methyl group.
    Type: Application
    Filed: March 16, 2015
    Publication date: September 24, 2015
    Inventors: Muneo KUDO, Shoji ICHINOHE, Tomoyuki GOTO
  • Publication number: 20150133619
    Abstract: One of the purposes of the present invention is to provide a silicone compound which has a specific number of silicon atoms, is well compatible with (meth)acryl monomers, is suitable as an ophthalmic monomer and provides a polymer having excellent durability of mechanical strength in a buffered phosphate solution. Another purpose of the present invention is to provide a silicone compound which functions well as a crosslinking agent for a polymerizable monomer. Further, another purpose is to provide a method for preparing the silicone compound, in particular the silicone compound having one specific structure at a high ratio. In the first aspect, the present invention provides a compound represented by the following formula (1-1): and a method for preparing the silicone compound. In the second aspect, the present invention provides a compound represented by the following formula (2-1): and a method for preparing the silicone compound.
    Type: Application
    Filed: November 13, 2014
    Publication date: May 14, 2015
    Applicant: Shin-Etsu Chemical Co., Ltd.
    Inventors: Muneo KUDO, Shoji ICHINOHE
  • Publication number: 20140170549
    Abstract: There is provided an electrostatic image developing toner less likely to cause image degradation even when used for a long period, by controlling CCA particles present on surfaces of toner particles and thereby keeping an amount of tribocharge generated between the toner and a magnetic carrier or the like constant. A charge control agent composition for external addition for controlling charge amount of toner particles includes: at least two types of carrier particles different in average particle size of primary particles; and a charge control agent (CCA), and an electrostatic image developing toner is constituted of a mixture of toner particles and the aforesaid charge control agent composition for external addition.
    Type: Application
    Filed: February 25, 2014
    Publication date: June 19, 2014
    Applicants: SHIN-ETSU CHEMICAL CO., LTD., MORIMURA CHEMICALS LIMITED
    Inventors: KOICHI TSUNEMI, TOSHIHIKO OGUCHI, ATSUSHI SUKA, TAKASHI IIMURA, KAZUYUKI MATSUMURA, MUNEO KUDO, MASAKI TANAKA, YOSHITERU SAKATSUME
  • Publication number: 20140005431
    Abstract: Organopolysiloxanes containing a sulfide-containing organic group, a long-chain alkyl group, and a hydrolyzable group are novel. The organopolysiloxanes are effective for improving the shelf stability of epoxy resin compositions.
    Type: Application
    Filed: June 26, 2013
    Publication date: January 2, 2014
    Inventors: Munenao HIROKAMI, Kazuhiro TSUCHIDA, Muneo KUDO
  • Patent number: 8158716
    Abstract: A hydrolyzable group-containing organohydrogenpolysiloxane is prepared by (A) reacting (a) an organosiloxane with (b) an organosilane or organosiloxane containing a hydrolyzable group, at least one of components (a) and (b) containing hydrosilyl, in the presence of a superstrong acid catalyst, (B) adding an inorganic basic neutralizing agent and/or an adsorbent to the resulting reaction solution, and (C) removing the neutralized and/or adsorbed form of the superstrong acid catalyst. The process proceeds in an essentially non-aqueous system, and the organohydrogenpolysiloxane free of residual acidic catalyst is obtainable at low cost.
    Type: Grant
    Filed: July 16, 2009
    Date of Patent: April 17, 2012
    Assignee: Shin-Etsu Chemical Co., Ltd.
    Inventors: Masahiro Amemiya, Hitoshi Uehara, Muneo Kudo, Mitsuo Asai
  • Patent number: 7727635
    Abstract: A coating composition that is capable of forming a coating film that combines abrasion resistance and crack resistance. The composition comprises: (A) a silicone resin obtained by hydrolysis and condensation of an alkoxysilane that includes an alkoxysilane represented by a general formula (1): (R1)mSi(OR2)4-m??(1) (wherein, R1 represents a hydrogen atom, or a substituted or unsubstituted monovalent hydrocarbon group, R2 represents an alkyl group of 1 to 3 carbon atoms, and m represents either 0 or 1), (B) hydrophobic silica microparticles, (C) a curing catalyst, and (D) a solvent.
    Type: Grant
    Filed: May 27, 2008
    Date of Patent: June 1, 2010
    Assignee: Shin-Etsu Chemical Co., Ltd.
    Inventors: Masahiro Furuya, Muneo Kudo
  • Publication number: 20100022705
    Abstract: A hydrolyzable group-containing organohydrogenpolysiloxane is prepared by (A) reacting (a) an organosiloxane with (b) an organosilane or organosiloxane containing a hydrolyzable group, at least one of components (a) and (b) containing hydrosilyl, in the presence of a superstrong acid catalyst, (B) adding an inorganic basic neutralizing agent and/or an adsorbent to the resulting reaction solution, and (C) removing the neutralized and/or adsorbed form of the superstrong acid catalyst. The process proceeds in an essentially non-aqueous system, and the organohydrogenpolysiloxane free of residual acidic catalyst is obtainable at low cost.
    Type: Application
    Filed: July 16, 2009
    Publication date: January 28, 2010
    Applicant: SHIN-ETSU CHEMICAL CO., LTD.
    Inventors: Masahiro Amemiya, Hitoshi Uehara, Muneo Kudo, Mitsuo Asai
  • Publication number: 20080299400
    Abstract: A coating composition that is capable of forming a coating film that combines abrasion resistance and crack resistance. The composition comprises: (A) a silicone resin obtained by hydrolysis and condensation of an alkoxysilane that includes an alkoxysilane represented by a general formula (1): (R1)mSi(OR2)4-m ??(1) (wherein, R1 represents a hydrogen atom, or a substituted or unsubstituted monovalent hydrocarbon group, R2 represents an alkyl group of 1 to 3 carbon atoms, and m represents either 0 or 1), (B) hydrophobic silica microparticles, (C) a curing catalyst, and (D) a solvent.
    Type: Application
    Filed: May 27, 2008
    Publication date: December 4, 2008
    Applicant: Shin-Etsu Chemical Co., Ltd.
    Inventors: Masahiro FURUYA, Muneo KUDO