Patents by Inventor Isao Ona

Isao Ona 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).

  • Patent number: 6528121
    Abstract: An aqueous treatment agent for wiping paper is capable of rendering tissue paper, toilet paper, and other types of wiping paper dry to the touch, highly smooth, nonsticky, and extremely soft while suppressing the slippery or wet feel thereof. The aqueous treatment agent comprises a water dispersion of a silicone rubber powder with an average particle diameter of 0.1 to 500 micrometers, a silicone oil, a surfactant, and water.
    Type: Grant
    Filed: April 6, 2001
    Date of Patent: March 4, 2003
    Assignee: Dow Corning Toray Silicone Co., Ltd.
    Inventors: Isao Ona, Masaru Ozaki, Kazuo Kobayashi, Yoshitsugu Morita
  • Patent number: 6441105
    Abstract: A synthetic fiber treatment agent composition capable of providing synthetic fibers, particularly synthetic fiber padding, with a better hand, smoothness, repulsion, and the like. The composition comprises an amino group-containing polyorganosiloxane with a high amino group content and specific terminal groups, and an amino group-containing polydiorganosiloxane with a low amino group content or a polydiorganosiloxane with no amino groups.
    Type: Grant
    Filed: April 16, 2001
    Date of Patent: August 27, 2002
    Assignee: Dow Corning Toray Silicone Co., Ltd.
    Inventors: Tsutomu Naganawa, Masaru Ozaki, Isao Ona, Tadashi Takimoto
  • Patent number: 6416558
    Abstract: A water based fiber treatment agent and fiber treatment method impart to treated fibers a perfect smoothness, lubricity, reduced tackiness, and pleasant tactile sensations. The water based fiber treatment agent contains a silicone oil emulsion of crosslinked silicone particles with an average diameter of 0.01 to 100 &mgr;m which are in silicone oil drops having an average diameter of 0.05 to 500 &mgr;m, and then the silicone oil drops are dispersed in water. The diameter of the crosslinked silicone particles is smaller than the diameter of the silicone oil drops.
    Type: Grant
    Filed: May 8, 2000
    Date of Patent: July 9, 2002
    Assignee: Dow Corning Toray Silicone Co., Ltd.
    Inventors: Isao Ona, Hiroki Ishikawa, Tsutomu Naganawa, Kazuo Kobayashi, Yoshitsugu Morita
  • Patent number: 6416557
    Abstract: The present invention relates to a water-based fiber treatment agent that has the ability to equip fibers with such properties as an excellent smoothness and lubricity, a reduced tack, and an appropriate or moderate slickness.
    Type: Grant
    Filed: September 15, 1999
    Date of Patent: July 9, 2002
    Assignee: Dow Corning Toray Silicone Co., Ltd.
    Inventors: Isao Ona, Hiroki Ishikawa, Tsutomu Naganawa, Kazuo Kobayashi, Yoshitsugu Morita
  • Patent number: 6409934
    Abstract: A polyester fiber treatment composition is capable of imparting good handle to polyester fiber, particularly polyester fiber wadding, padding, or fill, and consists of a water-based emulsion containing (A) an aminofunctional organopolysiloxane endblocked by alkoxy groups at its molecular chain terminals, (B) an aminofunctional organopolysiloxane endblocked by silanol groups at its molecular chain terminals, (C) a nonionic surfactant, and (D) water.
    Type: Grant
    Filed: October 23, 2000
    Date of Patent: June 25, 2002
    Assignee: Dow Corning Toray Silicone Co., Ltd.
    Inventors: Tsutomu Naganawa, Isao Ona, Tadashi Takimoto
  • Patent number: 6398860
    Abstract: A sizing agent composition for printing paper comprising (A) a water-soluble diorganopolysiloxane described by formula  where each R is independently selected from the group consisting of a hydrogen atom, methyl group, and ethyl group, each R1 is an independently selected monovalent hydrocarbon group comprising 1 to 20 carbon atoms, Q is an organic group comprising an amino group or quaternary ammonium salt, m is an integer equal to or greater than 2, n is 0 or an integer equal to or greater than 1, and (m+n) is in the range of 2 to 100; (B) a sizing agent; and (C) water.
    Type: Grant
    Filed: August 4, 2000
    Date of Patent: June 4, 2002
    Assignee: Dow Corning Toray Silicone Co., Ltd.
    Inventors: Isao Ona, Hiroki Ishikawa, Tadashi Takimoto, Tsutomu Naganawa
  • Publication number: 20020035186
    Abstract: A diorganopolysiloxane/acrylate ester copolymer containing emulsion composition for fabric treatment cures at room temperature through removal of water with formation of flexible and highly flame retardant coatings that do not crack even at very low temperatures. Highly flame retardant fabrics can be provided by treatment with the emulsion composition. The emulsion composition contains (A) an emulsion of a copolymer of (a-1) an hydroxyl endblocked diorganopolysiloxane having at least two silicon bonded alkenyl groups in each molecule, and (a-2) an acrylate ester monomer; (B) colloidal silica; (C) a condensation catalyst, and (D) an inorganic flame retardant.
    Type: Application
    Filed: July 26, 2001
    Publication date: March 21, 2002
    Inventors: Isao Ona, Tsutomu Naganawa
  • Publication number: 20020019460
    Abstract: A synthetic fiber treatment agent composition capable of providing synthetic fibers, particularly synthetic fiber padding, with a better hand, smoothness, repulsion, and the like. The composition comprises an amino group-containing polyorganosiloxane with a high amino group content and specific terminal groups, and an amino group-containing polydiorganosiloxane with a low amino group content or a polydiorganosiloxane with no amino groups.
    Type: Application
    Filed: April 16, 2001
    Publication date: February 14, 2002
    Applicant: Info.Disc., Citations, Cert. Copy
    Inventors: Tsutomu Naganawa, Masaru Ozaki, Isao Ona, Tadashi Takimoto
  • Publication number: 20010051220
    Abstract: An aqueous treatment agent for wiping paper is capable of rendering tissue paper, toilet paper, and other types of wiping paper dry to the touch, highly smooth, nonsticky, and extremely soft while suppressing the slippery or wet feel thereof. The aqueous treatment agent comprises a water dispersion of a silicone rubber powder with an average particle diameter of 0.1 to 500 micrometers, a silicone oil, a surfactant, and water.
    Type: Application
    Filed: April 6, 2001
    Publication date: December 13, 2001
    Inventors: Isao Ona, Masaru Ozaki, Kazuo Kobayashi, Yoshitsugu Morita
  • Patent number: 6319980
    Abstract: An organic silicon compound emulsion for quickly imparting excellent water-repellent properties to the surfaces of porous inorganic base materials such as concrete, mortar, and masonry. The emulsion is prepared by the steps of emulsifying a mixture consisting of (A) an organoalkoxysilane, (B) an organopolysiloxane having in its molecule at least 2 alkoxy groups or hydroxyl groups bonded to a silicon atom, (C) an anionic emulsifying agent, and (D) water, and heat aging the emulsion at a temperature below 100° C. In another embodiment, the method comprises the steps emulsifying a mixture of the components (A) to (D) and adding an acidic or alkaline substance to the emulsion. In a third embodiment, the method comprises the steps of forming a mixture consisting of the components (A) to (D), adding an acidic or alkaline substance thereto, and performing the emulsification thereafter.
    Type: Grant
    Filed: October 19, 1999
    Date of Patent: November 20, 2001
    Assignee: Dow Corning Toray Silicone Company, Ltd.
    Inventors: Hiroki Ishikawa, Atsushi Sakuma, Tsutomu Naganawa, Naohiro Muramoto, Isao Ona
  • Patent number: 6300287
    Abstract: A parting agent for a copier toner is disclosed. The parting agent exhibits no loss of parting properties or generation of gel under high-temperature conditions near 200° C., and causes no problems with paper feed or the like. The parting agent is composed of a diorganopolysiloxane of the average unit formula: RaSiO4−a/2, where the R groups are the same or different and are substituted or unsubstituted monovalent hydrocarbon groups, with at least 50 mol % of the R groups being methyl groups, and 1.95 ≦a≦2.20. The diorganopolysiloxane has a viscosity of 10 to 100,000 centistokes at 25° C., and generates no more than 5 ppm (by weight) of formaldehyde per hour when kept at 200° C. in an air atmosphere.
    Type: Grant
    Filed: April 27, 2000
    Date of Patent: October 9, 2001
    Assignee: Dow Corning Toray Silicone Company, Ltd.
    Inventors: Hiroki Ishikawa, Tsutomu Naganawa, Isao Ona
  • Patent number: 6267842
    Abstract: A water-based treatment agent for tissue paper suppresses any feeling of slipperiness or wetness in ordinary tissue paper and toilet paper so the paper has a dry touch, ample smoothness, and a clean, smooth, tactile impression. It also provides the paper with a superior softness. The water-based treatment agent consists of a silicone oil emulsion in which crosslinked silicone particles with a mean particle size of 0.01-100 &mgr;m are contained in silicone oil droplets with a mean particle size of 0.05-500 &mgr;m, which are dispersed in water. The particle size of the crosslinked silicone particles is smaller than the particle size of the silicone oil droplets.
    Type: Grant
    Filed: May 22, 2000
    Date of Patent: July 31, 2001
    Assignee: Dow Corning Toray Silicone Company, Ltd.
    Inventors: Isao Ona, Hiroki Ishikawa, Tsutomu Naganawa, Kazuo Kobayashi, Yoshitsugu Morita
  • Patent number: 6211284
    Abstract: A highly storage-stable organopolysiloxane composition capable of the long-term retention of its surface-modifying activities, such as antistatic and anticlouding activities is disclosed. The composition comprises a first polyoxyalkylene-functional diorganopolysiloxane that is free of amino, carboxyl, and epoxy groups, a second polyoxyalkylene-functional diorganopolysiloxane that contains an amino-functional organic group, and water.
    Type: Grant
    Filed: June 22, 1999
    Date of Patent: April 3, 2001
    Assignee: Dow Corning Toray Silicone Co.
    Inventors: Hiroki Ishikawa, Tsutomu Naganawa, Masaru Ozaki, Isao Ona
  • Patent number: 6180712
    Abstract: There is disclosed a silicone water-based emulsion composition suitable for treating fibers to provide a non-yellowing and adherent coating thereupon, said composition comprising: (A) an organopolysiloxane having at least 2 silicon-bonded groups selected from hydroxyl or alkoxy groups in each molecule; (B) a microparticulate silica; (C) a curing catalyst; and (D) a silatrane derivative.
    Type: Grant
    Filed: August 27, 1999
    Date of Patent: January 30, 2001
    Assignee: Dow Corning Silicone Co., Ltd.
    Inventors: Hiroki Ishikawa, Tsutomu Naganawa, Isao Ona, Makoto Yoshitake
  • Patent number: 5919290
    Abstract: A release agent comprising a mixture of (A) a dimethylpolysiloxane and (B) an organopolysiloxane with phenolic hydroxyl groups, said mixture having an average phenol equivalent within the range of 10,000 to 5,000,000 and a dimethylsiloxane oligomer with less than 20 silicon atoms in an amount of less than 5,000 ppm, said agent having a viscosity within the range of 5.times.10.sup.-5 to 1.times.10.sup.-1 m.sup.2 /s at 25.degree. C. The release agent of the present invention possesses excellent heat-resistant and release properties, and suppresses formation of formaldehyde under the effect of thermal decomposition.
    Type: Grant
    Filed: July 29, 1998
    Date of Patent: July 6, 1999
    Assignee: Dow Corning Toray Silicone Co., Ltd.
    Inventors: Hiroki Ishikawa, Tsutomu Naganawa, Isao Ona
  • Patent number: 5861458
    Abstract: What is discussed herein is a silicone water-based emulsion mold release agent characterized by the fact that its principal ingredient is the condensation reaction product of a diorganopolysiloxane having the general formula ##STR1##
    Type: Grant
    Filed: July 1, 1996
    Date of Patent: January 19, 1999
    Assignee: Dow Corning Toray Silicone Co., LTD.
    Inventors: Tsutomu Naganawa, Hiroki Ishikawa, Isao Ona
  • Patent number: 5851431
    Abstract: The invention concerns a microemulsion having a mean particle size of 0.15 microns or less comprising:(A) an organopolysiloxane having at least one epoxy containing group per molecule, wherein said epoxy containing group is selected from the group consisting of: ##STR1## where R.sup.1 and R.sup.2 are divalent hydrocarbon groups,and wherein said organopolysiloxane also has carboxyl containing groups present in the amount of 0.5 to 15 moles of caboxyl containing groups per mole of silicon atoms in said organopolysiloxane, wherein said carboxyl containing groups are expressed by the formula:--R.sup.3 --COOR.sup.4whereR.sup.3 is a divalent hydrocarbon group, andR.sup.4 is selected from the group consisting of hydrogen atoms, monovalent hydrocarbon groups and silyl groups expressed by the formula --SiR.sup.5.sub.3, where R.sup.5 indicates the same or different monovalent hydrocarbon groups; (B) a nonionic surfactant; and (C) water.
    Type: Grant
    Filed: April 30, 1997
    Date of Patent: December 22, 1998
    Assignee: Dow Corning Toray Silicone Co., LTD.
    Inventors: Hiroki Ishikawa, Tsutomu Naganawa, Isao Ona
  • Patent number: 5738813
    Abstract: A release agent composition for tire molding applications that, when applied on the inner liner surface of an unvulcanized green tire, has a white color prior to vulcanization and a black to blackish-gray color after vulcanization. The release agent composition contains a diorganopolysiloxane that has a viscosity at 25.degree. C. of at least 100 centistokes, an emulsifying dispersant, mica powder or talc powder, a powder having a melting point not exceeding 200.degree. C., and water.
    Type: Grant
    Filed: July 19, 1995
    Date of Patent: April 14, 1998
    Assignee: Dow Corning Toray Silicone Co., LTD.
    Inventors: Tsutomu Naganawa, Isao Ona
  • Patent number: 5625025
    Abstract: The present invention relates to a silicone composition comprising a mixture of (A) an amino-functional diorganopolysiloxane oil free of phenol groups and having at least 1 amino group per molecule and (B) a diorganopolysiloxane oil free of amino groups and having at least 1 phenol group per molecule. The silicone composition has a viscosity of from 10 to 100,000 mm.sup.2 /s at 25.degree. C. and an average phenol equivalent weight of 10,000 to 5,000,000. The silicone compositions of the present invention are highly heat-resistant, exhibit excellent release properties, and superior lubrication properties.
    Type: Grant
    Filed: February 21, 1995
    Date of Patent: April 29, 1997
    Assignee: Dow Corning Toray Silicone Co., Ltd.
    Inventors: Hiroki Ishikawa, Tsutomu Naganawa, Isao Ona
  • Patent number: 5620787
    Abstract: The present invention relates to an organopolysiloxane emulsion composition comprising a hydroxy or alkoxy-endblocked diorganopolysiloxane, an alkoxy-group containing organosilicon compound, surfactant, and water. The compositions of this invention are characterized by a lack of offensive odor, high productivity and good storage stability. The organopolysiloxane emulsions of this invention are useful as fiber treatment agents. The fibers treated with the organopolysiloxane emulsion of this invention exhibit good feel.
    Type: Grant
    Filed: January 29, 1996
    Date of Patent: April 15, 1997
    Assignee: Dow Corning Toray Silicone Co., Ltd.
    Inventors: Isao Ona, Masaru Ozaki, Toshio Saruyama, Masahiko Suzuki