Product Having A Silicon Atom Patents (Class 523/209)
  • Patent number: 5936112
    Abstract: Mixtures are disclosed of bis(silylorganyl)polysulfanes and silylorganylthiocyanates, which are produced by reacting polysulfanes with cyanides. The inorganic thiocyanate formed is subsequently allowed to react with a haloalkylalkoxysilane to form the silylorganylthiocyanate. These substances are used in plastic and rubber mixtures reinforced with silica and optionally carbon black.
    Type: Grant
    Filed: July 10, 1998
    Date of Patent: August 10, 1999
    Assignee: Degussa Aktiengesellschaft
    Inventors: Thomas Gobel, Ulrich Deschler, Jorg Munzenberg, Gerd Zezulka
  • Patent number: 5932634
    Abstract: A method of producing a resin composition containing an inorganic filler is disclosed, wherein organic cations having a steric hindrance structure are brought into contact with a layered mineral with an equivalent area per unit charge on the layer surface of 40-150 .ANG..sup.2 /charge, then brought into contact with a thermoplastic resin having a solubility parameter of at least 9.5 ?cal/cm.sup.3 !.sup.1/2, so as to disperse the layered mineral inside the resin at the molecular level. The resin compositions obtained by this production method have excellent rigidity, heat resistance and impact resistance, and are suitable for use in fields such as, for example, automobiles, household electronic parts, construction materials and industrial materials.
    Type: Grant
    Filed: May 23, 1997
    Date of Patent: August 3, 1999
    Assignee: Showa Denko K.K.
    Inventors: Teruo Hosokawa, Hirofumi Inoue, Yoshihiro Moteki
  • Patent number: 5916687
    Abstract: A film-formable emulsion type silicone composition for an air bag, which comprises the respective amounts of colloidal silica-silicone core shell material comprising 80% to 5% by weight of a core comprising colloidal silica (A)(a) and 20% to 95% by weight of a shell comprising a particular polyorganosiloxane containing an ethylenically unsaturated group (b), a particular polyorganohydrogensiloxane (B), a curing catalyst (C), an emulsifying agent (D), and water (E), is disclosed. The composition can form an elastomeric substance having excellent adhesive properties to air bag base cloth, gas tightness, and mechanical strength on an air bag base cloth by removing water therefrom.
    Type: Grant
    Filed: July 30, 1997
    Date of Patent: June 29, 1999
    Assignee: Toshiba Silicone Co., Ltd.
    Inventors: Masanori Takanashi, Makoto Matsumoto
  • Patent number: 5900454
    Abstract: Aqueous dispersions comprising emulsified polyolefins and metal salts of phosphoric acid esters which are useful for sizing glass fibers.
    Type: Grant
    Filed: June 21, 1996
    Date of Patent: May 4, 1999
    Assignees: Bayer Aktiengesellschaft, Bayer Antwerpen N.V.
    Inventors: Stephan Kirchmeyer, Alexander Karbach, Raymond Audenaert
  • Patent number: 5888290
    Abstract: A fluorochemical treatment composition comprises (a) a sol comprising a colloidal dispersion of substantially discrete, substantially monodisperse in size, polymer-grafted, inorganic microparticles in liquid; and (b) at least one fluorochemical. The composition can be used to impart durable water and oil repellency, stain release, and dry soil resistance to a variety of substrates.
    Type: Grant
    Filed: May 24, 1996
    Date of Patent: March 30, 1999
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Lori P. Engle, Steven J. Hamrock, Mark J. Pellerite
  • Patent number: 5889088
    Abstract: A stable aqueous suspension of composite particles each including a core formed from a solid or liquid particle and a coating layer formed on the core particle and including at least one high molecular weight surfactant compound having an average molecular weight of 1100 or more and at least one low molecular weight surfactant compound having an average molecular weight of 1100 or less and at least 400 below the average molecular weight of the high molecular weight surfactant compound and optionally a suspension stabilizer, is produced by subjecting a particulate solid substance or a liquid substance to a suspending treatment in an aqueous medium containing the above-mentioned high and low molecular weight surfactant compounds, and optionally the suspension stabilizer.
    Type: Grant
    Filed: February 7, 1997
    Date of Patent: March 30, 1999
    Assignee: Hodogaya Chemical Co., Ltd.
    Inventors: Atsushi Kisuno, Tatsuo Ansai, Shihoko Aizawa
  • Patent number: 5880197
    Abstract: Intercalates formed by contacting a layered material, e.g., a phyllosilicate, with an intercalant monomer amine and/or amide to sorb or intercalate the intercalant monomer between adjacent platelets of the layered material. Sufficient intercalant monomer is sorbed between adjacent platelets to expand the adjacent platelets to a spacing of at least about 5 .ANG. (as measured after water removal to a maximum of 5% by weight water), up to about 100 .ANG. and preferably in the range of about 10-45 .ANG., so that the intercalate easily can be exfoliated into individual platelets. The intercalated complex can be combined with an organic liquid into a viscous carrier material, for delivery of the carrier material, or for delivery of an active compound; or the intercalated complex can be combined with a matrix polymer to form a strong, filled polymer matrix. Alternatively, the intercalated complex can be exfoliated prior to combination with the organic liquid or the matrix polymer.
    Type: Grant
    Filed: December 22, 1995
    Date of Patent: March 9, 1999
    Assignee: AMCOL International Corporation
    Inventors: Gary W. Beall, Semeon Tsipursky, Anatoliy Sorokin, Anatoliy Goldman
  • Patent number: 5877237
    Abstract: The thermosetting silicone composition of the instant invention is comprised of (a) a diorganopolysiloxane containing alkenyl groups, (b) an organohydrogenpolysiloxane, (c) a platinum catalyst-containing silicone resin fine particle catalyst comprised of (i) a thermoplastic silicone resin containing 5 to 90 mole % PhSiO.sub.3/2 siloxane units and 5 to 20 mole % MeViSiO.sub.2/2 siloxane units, wherein Ph denotes phenyl, Me denotes methyl and Vi denotes vinyl; said resin having a glass transition point of 40.degree. to 70.degree. C. and (ii) 0.05 to 2 wt % as platinum atoms of a platinum catalyst; and (d) a hydrosilation reaction inhibiting compound. The thermosetting silicone compositions have excellent storage stability at about room temperature, and cure at a fast rate when heated.
    Type: Grant
    Filed: December 16, 1994
    Date of Patent: March 2, 1999
    Assignee: Dow Corning Toray Silicone Co., Ltd.
    Inventors: Junji Nakanishi, Toshio Saruyama, Atsushi Togashi
  • Patent number: 5874489
    Abstract: A nonstick coating compositions for mold surfaces is disclosed which coatings have superior release properties and impart a matte finish to the molded article and maintain these performance characteristics over protracted periods of use. The disclosed coating composition comprises a filled fluoropolymer and polymer binder, where the filled fluoropolymer comprises an inorganic filler particle which is wholly or partially encapsulated by a fluoropolymer powder which composition when applied to a mold surface produces a surface profile with an average roughness Ra of 1 to 15 microns after spraying and curing.
    Type: Grant
    Filed: October 7, 1997
    Date of Patent: February 23, 1999
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Luc Germain Pierre Joseph D'Haenens, Kenji Kiwa
  • Patent number: 5859094
    Abstract: A platinum group-metal curing liquid silicone rubber compositions having improved physical properties such as tear and heat-aging, especially at durometers below about 35 and above about 65. The present inventors have unexpectedly discovered that the addition of diorganohydrogensiloxy end-blocked polydiorganosiloxanes and triorganosiloxy end-blocked polydiorganosiloxanes having a viscosity greater than about 10 Pa.cndot.s at 25.degree. C. to liquid silicone rubber compositions can provide for the described improved properties.
    Type: Grant
    Filed: September 3, 1996
    Date of Patent: January 12, 1999
    Assignee: Dow Corning Corporation
    Inventors: Lori Jean Conway, Phillip Joseph Griffith, Jary David Jensen, Peter Lamont
  • Patent number: 5856379
    Abstract: An aqueous dispersion of core/shell type composite particles having colloidal silica as the cores and having an organic polymer as the shells is disclosed, comprising an aqueous dispersion of particles obtained by carring out a reaction operation of coupling reacting (a) colloidal silica and (b) an organoalkoxysilane in an aqueous medium in the presence of a dispersion stabilizer and thereafter polymerizing the coupling reaction product and (c) a vinyl monomer having at least one ethylenically unsaturated group, and further a method for producing the aqueous dispersion is disclosed.The aqueous dispersion has a good dispersion stability, by-produces less polymer sole particles, and a high coating degree of a polymer on the surfaces of the silica particles.
    Type: Grant
    Filed: January 15, 1997
    Date of Patent: January 5, 1999
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Kentaro Shiratsuchi, Hirohisa Hokazono
  • Patent number: 5853886
    Abstract: The present invention relates to particulate concentrate compositions formed by intercalation of a polymer polymerizing component into the galleries of a layered inorganic cation exchange composition initially in proton exchanged form and to the use of the particulate concentrates for the preparation of cured polymer-inorganic nanolayer hybrid composite compositions. The polymer polymerizing component comprising the particulate concentrate contains a basic group for reaction with the protons of the inorganic cation exchanger. Also, the polymer polymerizing component contains a functional group for polymerization reaction with a polymer precursor, a mixture of polymer precursors, or a polymer melt which is introduced into the galleries of the inorganic cation exchanger and reacts with the polymer polymerizing component to form a cured polymer-inorganic nanolayer hybrid composite.
    Type: Grant
    Filed: June 17, 1996
    Date of Patent: December 29, 1998
    Assignee: Claytec, Inc.
    Inventors: Thomas J. Pinnavaia, Tie Lan
  • Patent number: 5846643
    Abstract: A fuser member for use in an electrostatographic printing machine has at least one layer of an elastomer composition comprising a silicone elastomer and a mica-type layered silicate, the silicone elastomer and mica-type layered silicate forming a delaminated nanocomposite with silicone elastomer inserted among the delaminated layers of the mica-type layered silicate.
    Type: Grant
    Filed: November 13, 1995
    Date of Patent: December 8, 1998
    Assignee: Xerox Corporation
    Inventors: Santokh S. Badesha, Arnold W. Henry, Robert J. Gruber
  • Patent number: 5846309
    Abstract: A coarse particle kaolin clay is provided having an average Stokes equivalent particle diameter of about 4.5-6.0 microns, a BET surface area of about 8-11 m.sup.2 /g, and preferably having a median Malvern particle size of about 9.0-10.5 microns as determined by laser light-scattering measurement and a high aspect ratio preferably of about 12-14 as determined by Sphericity Model calculations. The coarse particle kaolin clay provides low viscosity build, good reinforcement properties and excellent surface finish qualities as a filler in thermoset composite materials, such as polyester molding compounds, and also provides excellent pigmenting properties in paints and industrial coatings.
    Type: Grant
    Filed: February 20, 1997
    Date of Patent: December 8, 1998
    Assignee: J. M. Huber Corporation
    Inventors: Gary M. Freeman, John M. M. Harrison, Kenneth B. Files
  • Patent number: 5840785
    Abstract: An improved feedstock material for D-RIM type PIM processes to manufacture parts. The feedstock includes metal or powders or a mixture thereof which is coated with a surfactant to improve rheology and keep the powder from inhibiting a catalytic reaction which occurs during the process. A condensation thermosetting resin is mixed with a latent catalyst and added to the mixture. A modifier can also be added to the mixture, as can a latent catalyst which is a metal salt such as copper triflate. The constituents when mixed together form a uniform feedstock which is injected into a heated mold. The mixtures cures in the mold and a partial debinding occurs. When the part is removed from the mold, it is sintered. Addition of the copper triflate adds significantly to the green strength of the part, and allows parts to be made at least as quickly as parts made from other feedstock materials. Hydrating the copper triflate greatly increases the shelf life of the feedstock.
    Type: Grant
    Filed: April 5, 1996
    Date of Patent: November 24, 1998
    Assignee: Megamet Industries
    Inventors: Jeanne K. Allen, Gregory M. Brasel
  • Patent number: 5834551
    Abstract: The present invention provides a composite of a thermosetting resin with a metallic oxide, prepared by a process which comprises subjecting a metal alkoxide containing a silicon alkoxide and/or a low condensate thereof to hydrolysis and polycondensation in a solution of a phenolic resin and/or thermosetting resin containing a phenolic resin while effecting the removal of the solvents and/or curing reaction of the resins to incorporate a particulate metallic oxide having an average particle diameter of from 0.01 to 5 .mu.m homogeneously in said thermosetting resin with a good interfacial wettability without causing macroscopic phase separation. Thus, the present invention can provide a cured or uncured composite of a thermosetting resin with a metallic oxide which can be used as a molding material, sliding material, friction material, coating material, film-forming material, etc.
    Type: Grant
    Filed: June 9, 1995
    Date of Patent: November 10, 1998
    Assignee: Dainippon Ink and Chemicals, Inc.
    Inventors: Kazutoshi Haraguchi, Yusho Usami
  • Patent number: 5824729
    Abstract: The present invention is silicone rubber compositions the exhibit high mechanical strength and excellent electrical properties such as tracking resistance, arc resistance, and erosion resistance. The improved properties are obtained by incorporation in the compositions aluminum hydroxide powder which has been treated with a treating agent selected from the group consisting of silanes and siloxanes having alkenyl and alkoxy or hydroxy substitution.
    Type: Grant
    Filed: January 30, 1997
    Date of Patent: October 20, 1998
    Assignee: Dow Corning Toray Silicone Co., LTD.
    Inventors: Takao Matsushita, Osamu Takuman
  • Patent number: 5801216
    Abstract: A clay-resin composition of a cured epoxy resin and a layered clay with the cured epoxy resin in the galleries of the clay by intercalation or exfoliation. The preferred epoxy resins are flexible and usually elastic because of the epoxy resin and/or curing agent which is used. The result is a composite which can have superior tensile strength and/or solvent resistance as compared to the cured epoxy resin without the clay or with the clay but without the intercalation or exfoliation. The flexible composites are particularly useful for seals and other thin layer applications.
    Type: Grant
    Filed: July 7, 1997
    Date of Patent: September 1, 1998
    Assignee: Board of Trustees operating Michigan State University
    Inventors: Thomas J. Pinnavaia, Tie Lan
  • Patent number: 5789466
    Abstract: Laser marking of pigmented fluoropolymer substrates is enhanced by using titanium dioxide pigment coated with organo silane.
    Type: Grant
    Filed: May 7, 1996
    Date of Patent: August 4, 1998
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: John Nicholas Birmingham, Jr., Dwight Alan Holtzen, James Francis Hunt, Robert Sterrett Jenkins, Peter Dwight Spohn, James Thomas Walnock
  • Patent number: 5780530
    Abstract: A thermosetting resin or coating composition contains (a) a film-forming polyol resin, (b) a curing agent reactive with the polyol resin, (c) a hydrolyzate/polycondensate of tri- or tetraalkoxysilane, and (d) a catalyst for promoting the reaction between the polyol resin (a) and the curing agent (b).
    Type: Grant
    Filed: March 18, 1997
    Date of Patent: July 14, 1998
    Assignee: Nippon Paint Co., Ltd.
    Inventors: Keita Mizutani, Saori Yoshimatsu, Kinya Yamakawa
  • Patent number: 5777002
    Abstract: A method for preparing organopolysiloxane bases with high levels of fillers. The present inventors have found that by mixing the components of the base at a temperature below about 60.degree. C. for a period of time sufficient to effect essentially a homogeneous blend, a base composition is formed which can be further blended with a platinum group metal-containing catalyst, an organohydrogensiloxane, and optionally an inhibitor to form a curable liquid silicone rubber (LSR) composition. The curable LSR composition has improved flow characteristics and improved shelf life when compared to similar materials where the base is prepared at temperatures above about 60.degree. C. The improved flow characteristics allows larger quantities of fillers to be incorporated into the curable LSR composition while still maintaining acceptable flow characteristics.
    Type: Grant
    Filed: November 13, 1996
    Date of Patent: July 7, 1998
    Assignee: Dow Corning Corporation
    Inventors: Lori Jean Conway, Thomas Edward Gray, Phillip Joseph Griffith, William James Schulz, Jr.
  • Patent number: 5760106
    Abstract: A clay-resin composition of a cured epoxy resin and a layered clay with the cured epoxy resin in the galleries of the clay by intercalation or exfoliation. The preferred epoxy resins are flexible and usually elastic because of the epoxy resin and/or curing agent which is used. The result is a composite which can have superior tensile strength and/or solvent resistance as compared to the cured epoxy resin without the clay or with the clay but without the intercalation or exfoliation. The flexible composites are particularly useful for seals and other thin layer applications.
    Type: Grant
    Filed: September 13, 1996
    Date of Patent: June 2, 1998
    Assignee: Board of Trustees operating Michigan State University
    Inventors: Thomas J. Pinnavaia, Tie Lan
  • Patent number: 5756568
    Abstract: There is disclosed a composite powder composition which has excellent flowability and water repellency and finds utility as a modifier for paints and organic resins, said composition comprising:(A) 100 parts by weight of a cured silicone powder that has an average particle size of 0.1 to 100 micrometers and contains a non-crosslinking silicone oil; and(B) 0.1 to 100 parts by weight of a microfine inorganic powder, said inorganic powder being coated on the surface of said cured silicone powder.
    Type: Grant
    Filed: November 13, 1996
    Date of Patent: May 26, 1998
    Assignee: Dow Corning Toray Silicone Co., Ltd.
    Inventors: Yoshitsugu Morita, Atsushi Sasaki
  • Patent number: 5747560
    Abstract: This invention relates to a process of forming a polymeric nanocomposite comprising a continuous polymeric phase formed from a melt processible polymer having amelt processing temperature equal to or greater than about 220.degree. C. and platelet particles having an average thickness equal to or less than about 50 .ANG. and a maximum thickness of about 100 .ANG. having a secondary or primary ammonium cationic complex, a quaternary phosphonium cationic complex bonded to surface of said particles, the composite material formed by said process and an article formed from the composite material.
    Type: Grant
    Filed: August 7, 1996
    Date of Patent: May 5, 1998
    Assignee: AlliedSignal Inc.
    Inventors: Brian R. Christiani, MacRae Maxfield
  • Patent number: 5747577
    Abstract: Conductive polymeric particles can be formed by mixing a monomer, carbon black and a block copolymer, wherein the block copolymer contains an A block that is miscible with said monomer and a B block that anchors to the surface of the carbon black, such as polystyrene or a derivative of polystyrene. A polymerization initiator is added to the mixture and bulk polymerization is effected until about 5 to about 30 weight percent of the monomer has been polymerized. This partially polymerized product is then dispersed in water and further polymerized.
    Type: Grant
    Filed: December 27, 1995
    Date of Patent: May 5, 1998
    Assignee: Xerox Corporation
    Inventors: Paul J. Gerroir, Nancy Ann Listigovers, Michael F. Cunningham, Thomas E. Enright, John A. Creatura
  • Patent number: 5721306
    Abstract: Intercalates formed by contacting the layer material, e.g., a phyllosilicate, with an intercalant polymer to sorb or intercalate the polymer between adjacent platelets of the layered material. Sufficient intercalant polymer is sorbed between adjacent platelets to expand the adjacent platelets to a spacing of at least about 50 .ANG. (as measured after water removal to a maximum of 5% by weight water), up to about 100 .ANG. and preferably in the range of about 10-45 .ANG., so that the intercalate easily can be exfoliated into individual platelets. The intercalated complex is combined with an organic liquid into an unexpectedly viscous carrier material, for delivery of the carrier material, or for delivery of an active compound, e.g., a pharmaceutical, or cosmetic, or lubricant, e.g., food guide lubricants dissolved or dispersed in the carrier material. Alternatively, the intercalated complex can be exfoliated prior to combination with the organic liquid.
    Type: Grant
    Filed: September 8, 1995
    Date of Patent: February 24, 1998
    Assignee: AMCOL International Corporation
    Inventors: Semeon Tsipursky, Gary W. Beall, Anatoliy Sorokin, Anatoliy Goldman
  • Patent number: 5719092
    Abstract: The present invention is a polymer/fiber matrix used as a photographic support. The fibers are of a specific glass composition and the polymer can be polyethylene, polypropylene, polystyrene, polybutylene and copolymers thereof. The matrix preferably includes between 1% and 79% fibers with the fibers having a diameter of between 0.001 mm and 0.01 mm.
    Type: Grant
    Filed: May 31, 1996
    Date of Patent: February 17, 1998
    Assignee: Eastman Kodak Company
    Inventor: Eric Eugene Arrington
  • Patent number: 5719205
    Abstract: Synthetic resin particles having a hydrogen bond forming group are swollen, at least one metallic compound capable of forming a hydrogen bond is introduced into the synthetic resin particles, and the metallic compound is hydrolyzed and condensed within the synthetic resin particles and on and in the vicinity of the surface of the synthetic resin particles. An inorganic component is grown by this reaction, and at least part of the grown inorganic component 3 is fixed through a reaction with a hydrogen bond forming group present within the synthetic resin particles 1 and on and in the vicinity of the surface of the synthetic resin particles 1 to prepare a coating composition. The coating composition is coated on the surface of a substrate, and the resulting coating is dried at a temperature of the lowest film forming temperature or above to form a coating.
    Type: Grant
    Filed: January 13, 1995
    Date of Patent: February 17, 1998
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventor: Toshio Yoshihara
  • Patent number: 5712036
    Abstract: A high solubility size composition is provided which may be applied to glass fibers useful for reinforcing polymeric materials. The size composition includes: a first film former comprising a polyester-based thermoplastic polyurethane derived from a saturated, non-crosslinkable polyester; a second film former comprising at least one ingredient selected from i) a vinyl acetate glycidyl methacrylate copolymer and ii) a mixture of a vinyl acetate glycidyl methacrylate copolymer and a vinyl acetate homopolymer; a silane coupling agent; and water. Using glass fibers coated with the high solubility size composition allows the advantageous production of low-pigmented or non-pigmented molded parts having enhanced surface appearance and color uniformity.
    Type: Grant
    Filed: May 8, 1996
    Date of Patent: January 27, 1998
    Assignee: N.V. Owens-Corning S.A.
    Inventor: Willy H. Piret
  • Patent number: 5707734
    Abstract: A composite having enhanced flame retardant behavior includes a polymer and glass fibers coated with fumed silica. The composite can be based on a wide variety of polymers such as polybutylene and polyethylene terephthalates, polycarbonates, polyethylenes, polypropylenes and nylons. The glass fibers are also preferably coated with fibrillar polytetrafluoroethylene.
    Type: Grant
    Filed: June 2, 1995
    Date of Patent: January 13, 1998
    Assignee: Owens-Corning Fiberglas Technology Inc.
    Inventors: Christopher M. Hawkins, Robert A. Schweizer
  • Patent number: 5698725
    Abstract: This invention relates to treating agents, glass fiber substrates treated with such agents, and the use of such treated glass fiber substrates in molded, glass fiber reinforced resins that are suited to copper clad laminates, composite base materials, printed wiring boards such as mass lamination boards, and, in particular, multilayer printed wiring boards.
    Type: Grant
    Filed: September 4, 1996
    Date of Patent: December 16, 1997
    Assignee: Dow Corning Toray Silicone Co., Ltd.
    Inventors: Masayuki Hayashi, Makoto Iwai
  • Patent number: 5688852
    Abstract: Disclosed herein is iron oxide particles comprising:100 parts by weight of material iron oxide particles having a specific surface area represented by the following formula (1):6/(.rho..multidot.d.sub.3).times..phi..sub.S (1)wherein .rho. represents a specific gravity of said iron oxide particles, d.sub.3 represents an area-average particle diameter (0.1 .mu.m.ltoreq.d.sub.3 .ltoreq.1.0 .mu.m) and .phi..sub.S represents an area shape factor) (1.0.ltoreq..phi..sub.S .ltoreq.2.0); and0.25 to 10 parts by weight (calculated as an oxide) of the fine particles of the oxygen compound, the fine particles of the hydrate or mixed fine particles thereof of one element selected from the group consisting of Al, Si, Zr and Ti, which are adhered to the surfaces of said iron oxide particles;the increment of said specific surface area of said iron oxide particles being 1 to 6 m.sup.2 /g, and the increment of said specific surface area with respect to the amount of said fine particles being not less than 0.35.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: November 18, 1997
    Assignee: Toda Kogyo Corporation
    Inventors: Hiromitsu Misawa, Kazuo Fujioka, Koso Aoki, Eiichi Kurita, Yoji Okano, Minoru Kozawa
  • Patent number: 5688840
    Abstract: A process for preparing a room temperature-curable organopolysiloxane composition comprising (A) (A-1) a specific organopolysiloxane or a mixture of (A-1) and (A-2) a specific silicone compound or a partial hydrolysis product thereof, (B) silica powder having a specific surface area of 20 to 800 m.sup.2 /g, (C) a curing catalyst, and (D) a silane coupling agent or an organopolysiloxane having a specific substituent, which comprises adding component (D) to component (A) prior to kneading or at the time of kneading components (A) and (B). The composition exhibits excellent physical characteristics, excellent workability in terms of flowability, adhesion, and extrudability, undergoes no change in viscosity with time and, in particular, suffers no impairment of these characteristics when stored for a long period of time.
    Type: Grant
    Filed: October 4, 1995
    Date of Patent: November 18, 1997
    Assignee: Toshiba Silicone Co., Ltd.
    Inventor: Kazuhisa Ono
  • Patent number: 5679727
    Abstract: A platinum curing organosiloxane composition having improved hysteresis characteristics when cured. The composition requires the presence of a diorganovinylsiloxy terminated polydiorganosiloxane having a viscosity within a range of about 20 Pa.multidot.s to 200 Pa.multidot.s at 25.degree. C. and containing essentially no ethylenically unsaturated hydrocarbon radicals bonded to non-terminal silicon atoms and a diorganovinylsiloxy terminated polydiorganosiloxane having a viscosity within a range of about 0.1 Pa.multidot.s to 200 Pa.multidot.s at 25.degree. C., where from 1 to 5 percent of the non-terminal repeating units of the siloxane comprise a vinyl radical. In addition, the present composition comprises 10 to 30 weight percent of a reinforcing silica filler that has been treated with hexamethyldisilazane and 1,1,3,3-tetramethyl-1,3-divinyldisilazane, and an organohydrogen siloxane crosslinker comprising at least ten silicon-bonded hydrogen atoms per molecule.
    Type: Grant
    Filed: March 28, 1996
    Date of Patent: October 21, 1997
    Assignees: Dow Corning Corporation, Dow Corning Taiwan, Incorporated
    Inventors: Phillip Joseph Griffith, Chu Yat Ho, Diane Marie Kosal, Jary David Jensen
  • Patent number: 5665794
    Abstract: A method for controlling cure initiation and curing time of a platinum group metal curable fluorosilicone composition. The method comprises in a platinum group metal curable fluorosilicone composition comprising a cross-linker mixture comprising an alkylhydrogensiloxane and a dialkylhydrogen perfluoroalkylethylsiloxane controlling the weight ratio of the alkylhydrogensiloxane to dialkylhydrogen perfluoroalkylethylsiloxane in the mixture within a range of about 0.1:1 to 9:1 to control the cure initiation and curing time of the composition.
    Type: Grant
    Filed: May 20, 1996
    Date of Patent: September 9, 1997
    Assignee: Dow Corning Corporation
    Inventors: Myron Timothy Maxson, Lee Walter Miller
  • Patent number: 5648169
    Abstract: Aqueous peroxide-free size compositions for application to glass fibers contain, as essential components, a reaction product of a polymeric amine and an amine-reactable organosilane, a film-forming polymer and an emulsified polyolefin. The reaction product can be preformed or made in situ, and is preferably the product of a polyalkylene polyamine and an epoxy-functional alkoxysilane. An optional added component is a water-soluble, non-volatile carboxylic acid. Glass fibers treated with the size composition can be made into mats, especially continuous strand, needled mats, useful for reinforcing thermoplastic polymers such as polypropylene in laminates which then can be used in molding processes to make articles of good physical properties.
    Type: Grant
    Filed: May 3, 1995
    Date of Patent: July 15, 1997
    Assignee: PPG Industries, Inc.
    Inventors: Thomas V. Thimons, Robert G. Swisher, Yongsheng Hou
  • Patent number: 5621023
    Abstract: To produce colored particles with a 10-200 .mu.m average grain size simply, efficiently, and in high yields, in order to obtain suede-type paint constituents with excellent decorative features capable of producing finely detailed, marble-like, multi-color patterns. Water-insoluble particles and a polyvalent carboxylic acid resin with an acid value (solid-based) of about 20-120, either water-soluble or water-diffusing, are mixed in water; and after primary coated particles are formed on the surfaces of the water-insoluble particles on which the polyvalent carboxylic acid resin is adsorbed, a dispersion-stabilized emulsion resin containing a colored pigment is mixed in the dispersion liquid; and a metal salt is added to this mixture so that colored particles with an average particle size of about 10-200 .mu.m with a surface colored coating are obtained. The water-insoluble particles can be either synthetic resin particles or inorganic particles.
    Type: Grant
    Filed: December 9, 1994
    Date of Patent: April 15, 1997
    Assignee: Asahipen Corporation
    Inventors: Yoshihiko Nishimura, Tadamitsu Hirata
  • Patent number: 5578672
    Abstract: Intercalates formed by mixing the phyllosilicate with a polymer and a liquid carrier, and extruding the mixture through a die-opening to adsorb or intercalate the polymer between adjacent phyllosilicate platelets. Sufficient polymer is adsorbed between adjacent phyllosilicate platelets to expand the adjacent platelets to a spacing of at least about 10 .ANG. (as measured after water removal), up to about 55 .ANG. and preferably in the range of about 30-40 .ANG., so that the intercalate easily can be exfoliated into individual platelets by heating the polymer to its melting point, to provide a matrix polymer/platelet composite material.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: November 26, 1996
    Assignee: Amcol International Corporation
    Inventors: Gary W. Beall, Semeon Tsipursky, Anatoliy Sorokin, Anatoliy Goldman
  • Patent number: 5569684
    Abstract: Disclosed is a heat conductive silicone rubber composition comprising a cross-linkable organopolysiloxane composition and a filler, with the filler being magnesium oxide treated so as to have a hydrophobic surface and having a content of from 30 to 70% by volume in the composition.
    Type: Grant
    Filed: March 3, 1995
    Date of Patent: October 29, 1996
    Assignee: Takita Patent & Engineering
    Inventors: Takehide Okami, Tokio Sekiya
  • Patent number: 5554670
    Abstract: An epoxy-silicate nanocomposite is prepared by dispersing an organically modified smectite-type clay in an epoxy resin together with diglycidyl ether of bisphenol-A (DGEBA), and curing in the presence of either nadic methyl anhydride (NMA), and/or benzyldimethyl amine (BDMA), and/or boron trifluoride monoethylamine (BTFA) at 100.degree.-200.degree. C. Molecular dispersion of the layered silicate within the crosslinked epoxy matrix is obtained, with smectite layer spacings of 100 .ANG. or more and good wetting of the silicate surface by the epoxy matrix. The curing reaction involves the functional groups of the alkylammonium ions located in the galleries of the organically modified clay, which participate in the crosslinking reaction and result in direct attachment of the polymer network to the molecularly dispersed silicate layers. The nanocomposite exhibits a broadened T.sub.s at slightly higher temperature than the unmodified epoxy.
    Type: Grant
    Filed: September 12, 1994
    Date of Patent: September 10, 1996
    Assignee: Cornell Research Foundation, Inc.
    Inventors: Emmanuel P. Giannelis, Phillip B. Messersmith
  • Patent number: 5530050
    Abstract: Blended thermal spray powders are characterized by the presence of a ZrO.sub.2 component and a ceramic coated plastic component. The ceramic coated plastic component is made by attrition milling ceramic fine particles with plastic core particles, causing the ceramic fine particles to bind to the surface of the plastic core without the use of a binder. Abradable coatings formed by thermal spraying the powders have superior high-temperature properties such as heat resistance and yet abrade readily to form abradable seals.
    Type: Grant
    Filed: April 6, 1994
    Date of Patent: June 25, 1996
    Assignee: Sulzer Plasma Technik, Inc.
    Inventor: Subramaniam Rangaswamy
  • Patent number: 5504147
    Abstract: A process for preparing a liquid silicone composition of the type which comprises (A) a diorganopolysiloxane having a viscosity of 1000 to 100,000 centipoises and having at least two reactive groups, (B) a filler mainly composed of SiO.sub.2 having a specific surface area of not smaller than 50 m.sup.2 /g, (C) a diorganopolysiloxane having a viscosity of from 10 to 1000 centipoises and substantially free of any terminal silanol group, (D) hexamethyldisilazane and/or (E) water is described. In the process, 10 to 100 wt % of the (A) and (C) components and 100% of the (B), (D) and, if present, (E) components are mixed under heating conditions of 100.degree. to 250.degree. C. for a time sufficient to obtain a uniform dispersion. If present, the balances of the (A) and (C) components are subsequently mixed with the dispersion.
    Type: Grant
    Filed: February 28, 1995
    Date of Patent: April 2, 1996
    Assignee: Shin-Etsu Chemical Co., Ltd.
    Inventors: Hironao Fujiki, Morio Ohashi
  • Patent number: 5502146
    Abstract: A method of producing a silicone rubber composition, comprising heating a mixture of an organopolysiloxane having a silanol group at both the ends of the molecular chain, a end blocking agent, such as a triorganosilanol, a silane or a siloxane having two dialkylaminosilyl groups in the molecule, and a reinforcing filler thereby carrying out chain lengthening and end blocking of said organopolysiloxane. According to this method, a silicone rubber composition whose low-molecular siloxane content is held down remarkably can be produced without consuming a large amount of energy for the mixing.
    Type: Grant
    Filed: August 31, 1994
    Date of Patent: March 26, 1996
    Assignee: Shin-Etsu Chemical Co., Ltd.
    Inventors: Yoshio Inoue, Masaharu Takahashi, Minoru Igarashi, Susumu Sekiguchi
  • Patent number: 5498781
    Abstract: The present invention is a composition comprising an optically variable pigment modified with a silane functional compound and a copolymer which is a polymeric backbone having a reactive functionality thereon to react with the silane functional compound. The invention also includes a process for treating the optically variable pigment, and a coating composition containing the treated optically variable pigment.
    Type: Grant
    Filed: May 23, 1994
    Date of Patent: March 12, 1996
    Assignee: BASF Corporation
    Inventors: Jon R. Hall, Clint W. Carpenter, Stuart K. Scott
  • Patent number: 5491181
    Abstract: Thermoplastic molding compounds containing at least one coated ceramic powder and at least one thermoplastic binder, to a process for preparing coated ceramic powders and to a process for producing molded components from ceramic powders. The ceramic powder is coated with at least one ionic, non-ionic or zwitterionic dispersant based on an organic or organometallic compound.
    Type: Grant
    Filed: July 22, 1994
    Date of Patent: February 13, 1996
    Assignee: Bayer Aktiengesellschaft
    Inventor: John Huggins
  • Patent number: 5475076
    Abstract: The invention relates to organo(poly)siloxane compositions which have long shelf life in the absence of water, but can be crosslinked in the presence of water, even at room temperature, to give elastomers with elimination of alcohols, and to a process for the preparation of such compositions.
    Type: Grant
    Filed: July 29, 1994
    Date of Patent: December 12, 1995
    Assignee: Wacker-Chemie GmbH
    Inventors: Rudolf Braun, Petra Absmaier
  • Patent number: 5437928
    Abstract: Aqueous size compositions for application to glass fibers contain, as essential components, a reaction product of a polymeric amine and an amine-reactable organosilane, a film-forming polymer and an emulsified polyolefin. The reaction product can be preformed or made in situ, and is preferably the product of a polyalkylene polyamine and an epoxy-functional alkoxysilane. An optional added component is a water-soluble, non-volatile carboxylic acid. Glass fibers treated with the size composition can be made into mats, especially continuous strand, needled mats, useful for reinforcing thermoplastic polymers such as polypropylene in laminates which then can be used in molding processes to make articles of good physical properties.
    Type: Grant
    Filed: October 29, 1993
    Date of Patent: August 1, 1995
    Assignee: PPG Industries, Inc.
    Inventors: Thomas V. Thimons, Robert G. Swisher, Yongsheng Hou
  • Patent number: 5434210
    Abstract: Thermal spray powders are characterized by the presence of a matrix-forming component, a solid lubricant component and a plastic component. Abradable coatings formed by thermal spraying the powders abrade readily to form abradable seals. The abradable coatings have a metal, metal alloy, or ceramic matrix with discrete inclusions of solid lubricant and plastic. The thermal spray powders may be prepared as mechanically fused agglomerates.
    Type: Grant
    Filed: September 28, 1992
    Date of Patent: July 18, 1995
    Assignee: Sulzer Plasma Technik, Inc.
    Inventors: Subramaniam Rangaswamy, Robert A. Miller
  • Patent number: 5430076
    Abstract: A glass fiber strand for reinforcing a thermoplastic resin, consisting essentially of a strand of glass filaments having a sizing agent applied thereto and bundled, and an auxiliary resin capable of forming a polymer alloy with a main thermoplastic resin to be reinforced, coated on the surface of the strand.
    Type: Grant
    Filed: January 26, 1993
    Date of Patent: July 4, 1995
    Assignee: Asahi Fiber Glass Company Limited
    Inventors: Mitsuhiro Matsumoto, Akira Kitsunezuka, Hiroki Sato, Shigeharu Arai
  • Patent number: 5426136
    Abstract: Particulate amorphous silica, surfactant, monomer, and an aqueous solvent are brought into mutual contact so that as equilibrium is approached the concentration of the surfactant in the liquid phase is below, at, or slightly above the critical micelle concentration; the monomer is then polymerized to form polymeric film associated with at least a portion of the surface of the particulate amorphous silica, the polymeric film being (i) homopolymer of an aliphatic monomer or (ii) copolymer of at least two different monomers.
    Type: Grant
    Filed: March 24, 1993
    Date of Patent: June 20, 1995
    Assignee: PPG Industries, Inc.
    Inventors: Walter H. Waddell, Larry R. Evans, Jeffrey H. Harwell, John H. O'Haver