Patents by Inventor Seiki Tamura

Seiki Tamura 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: 20230059761
    Abstract: A manufacturing method for a polyether polysiloxane block copolymer composition that can avoid the use and incorporation of aromatic hydrocarbon-based solvents is provided. The manufacturing method is generally easy on an industrial production scale. The manufacturing method includes a step of obtaining a polyether polysiloxane block copolymer (A) by a specific reaction in the presence of a saturated hydrocarbon solvent (C) having an average number of carbon atoms in a range of 6 to 11, and a step of replacing the solvent (C) used in the reaction with (B) a (poly)glycol or a polyglycol derivative diluent, either during or after the aforementioned step. Also provided is a method of manufacturing a foam stabilizer or the like using the composition obtained by the aforementioned manufacturing method.
    Type: Application
    Filed: November 12, 2020
    Publication date: February 23, 2023
    Inventors: Seiki TAMURA, Son Thanh PHAN, Hiroyuki INAGAKI
  • Patent number: 11066534
    Abstract: Provided is a polyether-modified silicone composition. The composition comprises (A) a polyether-modified silicone, and (B) a monool organic compound. The monool organic compound (B) is selected from (B1) a glycol ether compound having a hydrogen atom substituted by an alkyl group having from 2 to 8 carbon atoms at one end, a secondary alcoholic hydroxy group at the other end, from 2 to 3 repeating oxyalkylene units having from 2 to 4 carbon atoms, and (B2) a tripropylene glycol monomethyl ether. Isopropyl alcohol does not exceed 1 mass % of the entire composition. Applications and manufacturing methods for the composition are also provided.
    Type: Grant
    Filed: October 6, 2017
    Date of Patent: July 20, 2021
    Assignee: DOW TORAY CO., LTD.
    Inventors: Son Thanh Phan, Seiki Tamura, Hiroyuki Inagaki, Ikutaro Morikawa
  • Patent number: 10829718
    Abstract: A detergent composition comprises a trisiloxane having at least one carbinol functional group. The trisiloxane comprises the reaction product of (A) an initial trisiloxane and (B) an organic compound. Component (A) has a pendant silicon-bonded functional group selected from a hydrogen atom, an epoxy-containing group, an ethylenically unsaturated group, and an amine group. Typically, component (A) is free of certain terminal silicon-bonded functional groups and is free of polyoxyalkylene groups. Component (B) has a functional group reactive with the pendant silicon-bonded functional group of component (A), and has at least one hydroxyl functional group. The trisiloxane may be of the following general formula (I): (R13SiO1/2)(R1R3SiO2/2)(R13SiO1/2) (I). In formula (I), each R1 is an independently selected hydrocarbyl group. R3 may be selected from the groups (i) to (x) described herein, each of the groups having at least one carbinol group. Typically, the trisiloxane has 1-6 carbinol groups.
    Type: Grant
    Filed: April 26, 2017
    Date of Patent: November 10, 2020
    Assignees: DOW SILICONES CORPORATION, DOW TORAY CO., LTD.
    Inventors: Paula Michele Bauer, Severine Cauvin, Eric J. Joffre, Lenin J. Petroff, Martin K. Severance, Tsunehito Sugiura, Seiki Tamura, Zachary R. Wenzlick
  • Patent number: 10806691
    Abstract: A silicone material is provided. The silicone material is an organopolysiloxane or acid-neutralized salt thereof that contains a side-chain bonded hydrophilic group having a tertiary-amine structure and represented by the general formula: —CqH2q—O—CH2—CH(OH)—CH2—N(RQ1)(RQ2) wherein q is a number ranging from 1 to 6, and wherein each of RQ1 and RQ2 is independently a halogen-substituted or non-substituted monovalent hydrocarbon group or an alkanol group. At least one of RQ1 and RQ2 has a hydroxyl group, provided the total number of hydroxyl groups in RQ1 and RQ2 is at most three (3). Any of RQ1 and RQ2 does not have a nitrogen atom in the group. The silicone material has a number of beneficial properties.
    Type: Grant
    Filed: April 26, 2017
    Date of Patent: October 20, 2020
    Assignees: DOW SILICONES CORPORATION, DOW TORAY CO., LTD.
    Inventors: Eric Jude Joffre, Lenin James Petroff, Seiki Tamura
  • Patent number: 10717872
    Abstract: A polyether-polysiloxane block copolymer composition is disclosed. The copolymer composition comprises (A) a polyether-polysiloxane block copolymer having in a molecule structural units as expressed by General Formula (1) below: where a terminal group thereof is an alkenyl group or the like bonded to a polyether portion. The copolymer composition further comprises (B) a liquid monool organic compound, which is (B1) a glycol ether compound having a low degree of polymerization, a terminal hydrogen substituted with a hydrocarbon group, and a secondary alcoholic hydroxyl group provided on another terminal, or (B2) a higher alcohol compound having a branched alkyl group with 12 or more carbon atoms. The copolymer composition generally does not contain a dimethyl polysiloxane at more than the mass of component (A). A manufacturing method, foam stabilizer or the like containing the copolymer composition, and a polyurethane foam are also disclosed.
    Type: Grant
    Filed: April 13, 2016
    Date of Patent: July 21, 2020
    Assignee: DOW TORAY CO., LTD.
    Inventors: Hiroyuki Inagaki, Ikutaro Morikawa, Son Thanh Phan, Seiki Tamura
  • Publication number: 20200048427
    Abstract: Provided is a polyether-modified silicone composition. The composition comprises (A) a polyether-modified silicone, and (B) a monool organic compound. The monool organic compound (B) is selected from (B1) a glycol ether compound having a hydrogen atom substituted by an alkyl group having from 2 to 8 carbon atoms at one end, a secondary alcoholic hydroxy group at the other end, from 2 to 3 repeating oxyalkylene units having from 2 to 4 carbon atoms, and (B2) a tripropylene glycol monomethyl ether. Isopropyl alcohol does not exceed 1 mass % of the entire composition. Applications and manufacturing methods for the composition are also provided.
    Type: Application
    Filed: October 6, 2017
    Publication date: February 13, 2020
    Inventors: Son Thanh PHAN, Seiki TAMURA, Hiroyuki INAGAKI, Ikutaro MORIKAWA
  • Patent number: 10406092
    Abstract: The present invention relates to a method for producing a transparent or semi-transparent liquid glycerin derivative-modified silicone composition that comprises a hydration step of adding water to a liquid glycerin derivative-modified silicone or composition thereof. The present invention can provide a liquid glycerin derivative-modified silicone composition having a transparent or semi-transparent appearance can be provided.
    Type: Grant
    Filed: December 26, 2013
    Date of Patent: September 10, 2019
    Assignees: DOW SILICONES CORPORATION, DOW CORNING TORAY CO., LTD.
    Inventors: Serge Creutz, Seiki Tamura, Sayuri Sawayama, Seiji Hori
  • Publication number: 20190233646
    Abstract: A polyether-polysiloxane block copolymer composition is disclosed. The copolymer composition comprises (A) a polyether-polysiloxane block copolymer having in a molecule structural units as expressed by General Formula (1) below: where a terminal group thereof is an alkenyl group or the like bonded to a polyether portion. The copolymer composition further comprises (B) a liquid monool organic compound, which is (B1) a glycol ether compound having a low degree of polymerization, a terminal hydrogen substituted with a hydrocarbon group, and a secondary alcoholic hydroxyl group provided on another terminal, or (B2) a higher alcohol compound having a branched alkyl group with 12 or more carbon atoms. The copolymer composition generally does not contain a dimethyl polysiloxane at more than the mass of component (A). A manufacturing method, foam stabilizer or the like containing the copolymer composition, and a polyurethane foam are also disclosed.
    Type: Application
    Filed: April 13, 2016
    Publication date: August 1, 2019
    Inventors: Hiroyuki INAGAKI, Ikutaro MORIKAWA, Son Thanh PHAN, Seiki TAMURA
  • Publication number: 20190133920
    Abstract: A silicone material is provided. The silicone material is an organopolysiloxane or acid-neutralized salt thereof that contains a side-chain bonded hydrophilic group having a tertiary-amine structure and represented by the general formula: —CqH2q—O—CH2—CH(OH)—CH2—N(RQ1)(RQ2) wherein q is a number ranging from 1 to 6, and wherein each of RQ1 and RQ2 is independently a halogen-substituted or non-substituted monovalent hydrocarbon group or an alkanol group. At least one of RQ1 and RQ2 has a hydroxyl group, provided the total number of hydroxyl groups in RQ1 and RQ2 is at most three (3). Any of RQ1 and RQ2 does not have a nitrogen atom in the group. The silicone material has a number of beneficial properties.
    Type: Application
    Filed: April 26, 2017
    Publication date: May 9, 2019
    Inventors: Eric Jude JOFFRE, Lenin James PETROFF, Seiki TAMURA
  • Publication number: 20190112322
    Abstract: A trisiloxane having at least one carbinol functional group comprises the reaction product of (A) an initial trisiloxane and (B) an organic compound. Component (A) has a pendant silicon-bonded functional group selected from a hydrogen atom, an epoxy-containing group, an ethylenically unsaturated group, and an amine group. Typically, component (A) is free of certain terminal silicon-bonded functional groups and is free of polyoxyalkylene groups. Component (B) has a functional group reactive with the pendant silicon-bonded functional group of component (A), and has at least one hydroxyl functional group. The trisiloxane is useful for a number of applications including use as a detergent additive. The trisiloxane may be of the following general formula (I): (R13SiO1/2) (R1R3Si2/2)(R13SiO1/2) (I). In formula (I), each R1 is an independently selected hydrocarbyl group. R3 may be selected from the groups (i) to (iv) described herein. Typically, the trisiloxane has 1-6 carbinol groups.
    Type: Application
    Filed: April 26, 2017
    Publication date: April 18, 2019
    Inventors: Eric J. JOFFRE, Lenin J. PETROFF, Tsunehito SUGIURA, Seiki TAMURA, Zachary R. WENZLICK
  • Publication number: 20190112549
    Abstract: A detergent composition comprises a trisiloxane having at least one carbinol functional group. The trisiloxane comprises the reaction product of (A) an initial trisiloxane and (B) an organic compound. Component (A) has a pendant silicon-bonded functional group selected from a hydrogen atom, an epoxy-containing group, an ethylenically unsaturated group, and an amine group. Typically, component (A) is free of certain terminal silicon-bonded functional groups and is free of polyoxyalkylene groups. Component (B) has a functional group reactive with the pendant silicon-bonded functional group of component (A), and has at least one hydroxyl functional group. The trisiloxane may be of the following general formula (I): (R13SiO1/2)(R1R3SiO2/2)(R13SiO1/2) (I). In formula (I), each R1 is an independently selected hydrocarbyl group. R3 may be selected from the groups (i) to (x) described herein, each of the groups having at least one carbinol group. Typically, the trisiloxane has 1-6 carbinol groups.
    Type: Application
    Filed: April 26, 2017
    Publication date: April 18, 2019
    Inventors: Paula Michele BAUER, Severine CAUVIN, Eric J. JOFFRE, Lenin J. PETROFF, Martin K. SEVERANCE, Tsunehito SUGIURA, Seiki TAMURA, Zachary R. WENZLICK
  • Patent number: 10174170
    Abstract: A production method of a liquid high-purity polyhydric alcohol derivative-modified silicone or a composition thereof is disclosed. The method comprises: a capturing step 1) of bringing into an impurity-containing composition containing a liquid polyhydric alcohol derivative-modified silicone and hydrophilic impurities originating from a polyhydric alcohol derivative, the polyhydric alcohol derivative being a hydrophilic modifier of the polyhydric alcohol derivative-modified silicone, into contact with solid particles capable of capturing the hydrophilic impurities, and then capturing the hydrophilic impurities with the solid particles; and a separating step 2) of separating the polyhydric alcohol derivative-modified silicone and the solid particles. The method is useful for production of the liquid high-purity polyhydric alcohol derivative-modified silicone and the composition thereof on a commercial scale.
    Type: Grant
    Filed: April 20, 2015
    Date of Patent: January 8, 2019
    Assignee: Dow Corning Toray Co., Ltd.
    Inventors: Hideko Maeshima, Seiki Tamura
  • Patent number: 10085928
    Abstract: A diglycerin derivative-modified silicone, wherein the diglycerin derivative-modified silicone contains a long chain alkyl group as a lipophilic group in a molecule, does not have an oxyalkylene structure wherein an average value of the number of repetitions of the oxyalkylene unit is two or more, has only a glycerin derivative group with an average value of the number of repetitions of glycerin units of 1.1 to 2.9 as a hydrophilic group, and does not have other hydrophilic group in the molecule; a surfactant and dispersing agent, an emulsifier for a water-in-oil emulsion, an external use preparation, and a cosmetic composition containing the same.
    Type: Grant
    Filed: December 26, 2012
    Date of Patent: October 2, 2018
    Assignee: DOW CORNING TORAY CO., LTD.
    Inventors: Sayuri Sawayama, Seiki Tamura, Seiji Hori
  • Patent number: 10066060
    Abstract: The present invention relates to a production method for a liquid high-purity organosilicon compound, the method comprising the steps of: adding, to a mixture containing an organosilicon compound selected from a group consisting of organomodified silcones and organomodified silanes and impurities, an organic wax having affinity with the impurities and having a higher melting point than the organosilicon compound, melting and mixing while heating, and introducing the impurities into the melted organic wax; obtaining a solidified product of the organic wax by cooling the organic wax; and performing solid/liquid phase separation on the organosilicon compound and the solidified product of the organic wax. With the present invention, it is possible to provide a useful method for producing a high-purity organosilicon compound stably and on a commercial scale.
    Type: Grant
    Filed: December 26, 2013
    Date of Patent: September 4, 2018
    Assignee: DOW CORNING TORAY CO., LTD.
    Inventors: Seiki Tamura, Tatsuo Souda, Sayuri Sawayama, Seiji Hori
  • Patent number: 9994680
    Abstract: A co-modified organopolysiloxane having a viscosity at 25° C. of not more than 1,500 mPa·s, a group that has a siloxane dendron structure, a hydrophilic group, and expressed by the following general formula (1): R1aR2bL1cQdSiO(4-a-b-c-d)/2 (1). The invention also relates to a powder treatment agent, a powder in oil dispersion, an external use preparation (particularly a cosmetic composition) composition comprising the co-modified organopolysiloxane. In said general formula (1), R1 is a monovalent hydrocarbon group or a hydrogen atom; R2 is a monovalent hydrocarbon group having from 6 to 30 carbons; L1 is a silylalkyl group having a siloxane dendron structure; and Q is a hydrophilic segment.
    Type: Grant
    Filed: December 26, 2012
    Date of Patent: June 12, 2018
    Assignee: DOW CORNING TORAY CO., LTD.
    Inventors: Akito Hayashi, Tomohiro Iimura, Tatsuo Souda, Seiki Tamura, Haruhiko Furukawa
  • Patent number: 9988499
    Abstract: A production method for a liquid high purity sugar derivative-modified silicone or a composition thereof is disclosed. The method comprises the steps of: 1) capturing hydrophilic impurities in solid particles by causing an impurity containing composition containing liquid sugar derivative-modified silicone and the hydrophilic impurities derived from a sugar derivative to contact the solid particles, the sugar derivative being a hydrophilic modifier of the sugar derivative-modified silicone, and the solid particles being able to capture the hydrophilic impurities; and 2) separating the sugar derivative-modified silicone and the solid particles. The method is useful for production of the liquid high purity sugar derivative-modified silicone and the composition thereof on a commercial scale.
    Type: Grant
    Filed: April 20, 2015
    Date of Patent: June 5, 2018
    Assignee: Dow Corning Toray Co., Ltd.
    Inventors: Hideko Maeshima, Sayuri Sawayama, Tatsuo Souda, Seiki Tamura
  • Patent number: 9980897
    Abstract: The present invention provides a novel organopolysiloxane in which a rich hydrophilic property is exhibited, not only superior miscibility with a hydrophilic component and but also a hydrophobic property are exhibited, and superior miscibility with both a silicone oil and a non-silicone oil such as a hydrocarbon oil, an ester oil or the like, and provide various usages of the aforementioned novel organopolysiloxane by developing the superior characteristics thereof such as good surface activity power, a distinctive sensation during use, increased stability and the like. A co-modified organopolysiloxane having a specified chemical structure in which a sugar alcohol-modified group and a long-chain hydrocarbon group are present in one molecule is produced.
    Type: Grant
    Filed: April 28, 2011
    Date of Patent: May 29, 2018
    Assignee: DOW CORNING TORAY CO., LTD.
    Inventors: Seiki Tamura, Tomohiro Ilmura, Tatsuo Souda, Akito Hayashi, Sayuri Sawayama, Haruhiko Furukawa
  • Patent number: 9975999
    Abstract: A liquid organopolysiloxane having fluidity at least 100° C., a silicon-bonded glycerin derivative group, and a crosslinked structure comprising a carbon-silicon bond at the crosslinking portion.
    Type: Grant
    Filed: December 25, 2012
    Date of Patent: May 22, 2018
    Assignee: DOW CORNING TORAY CO., LTD.
    Inventors: Seiki Tamura, Tatsuo Souda, Tomohiro Iimura, Sayuri Sawayama, Seiji Hori, Haruhiko Furukawa
  • Patent number: 9783643
    Abstract: The present invention provides a glycerin-modified silicone which has an excellent emulsification/dispersion performance and thickening effect when used alone, particularly when the oil phase is a continuous phase. The present invention is a specific diglycerin derivative-modified silicone having a long-chain hydrocarbon group at a prescribed ratio in a molecule and having as a hydrophilic group only a diglycerin derivative group not having an oxyalkylene structure with an average value of the number of repetitions of oxyalkylene units of two or more; and a composition containing the diglycerin derivative-modified silicone.
    Type: Grant
    Filed: June 10, 2014
    Date of Patent: October 10, 2017
    Assignee: DOW CORNING TORAY CO., LTD.
    Inventors: Seiji Hori, Sayuri Sawayama, Seiki Tamura
  • Publication number: 20170218130
    Abstract: A production method of a liquid high-purity polyhydric alcohol derivative-modified silicone or a composition thereof is disclosed. The method comprises: a capturing step 1) of bringing into an impurity-containing composition containing a liquid polyhydric alcohol derivative-modified silicone and hydrophilic impurities originating from a polyhydric alcohol derivative, the polyhydric alcohol derivative being a hydrophilic modifier of the polyhydric alcohol derivative-modified silicone, into contact with solid particles capable of capturing the hydrophilic impurities, and then capturing the hydrophilic impurities with the solid particles; and a separating step 2) of separating the polyhydric alcohol derivative-modified silicone and the solid particles. The method is useful for production of the liquid high-purity polyhydric alcohol derivative-modified silicone and the composition thereof on a commercial scale.
    Type: Application
    Filed: April 20, 2015
    Publication date: August 3, 2017
    Inventors: Hideko MAESHI-MA, Seiki TAMURA