Patents Represented by Attorney George A. Grindahl

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  • Silalactones and methods for their preparation and use
    Patent number: 4788313
    Abstract: Carboxyalkyl-substituted organopolysiloxanes are prepared by hydrolysis of a silalactone composition having the formula ##STR1## where n has an average value greater than zero, R and Q are hydrocarbon and X is Cl or Br. Silicon-containing compounds having the formula R.sub.a Z.sub.b SiO.sub.(4-a-b)/2, where Z is a hydrolyzable radical, can be cohydrolyzed therewith. The novel silalactone composition is prepared by gently heating a mixture of an ester having the formula X.sub.2 R SiQCO.sub.2 R' and a halide salt catalyst, such as tetrabutylammonium bromide.
    Type: Grant
    Filed: December 23, 1983
    Date of Patent: November 29, 1988
    Assignee: Dow Corning Corporation
    Inventors: Grish Chandra, Donnie R. Juen
  • Lubricant composition for water fittings
    Patent number: 4784795
    Abstract: A lubricant for water fittings is described which essentially consists of a natural or synthetic high viscosity lubricating oil or lubricating grease, possibly an organic or inorganic thickener, and an additive in the form of at least one complexing agent and possibly at least one hydrophobing agent. Compared to known lubricants for water fittings, said lubricant is characterized by a performance capability which lasts substantially longer since the formation of disturbing deposits, particularly in the form of lime and rust, is greatly inhibited with said lubricant. The water fittings lubricated with this lubricant therefore remain functional substantially longer.
    Type: Grant
    Filed: December 27, 1985
    Date of Patent: November 15, 1988
    Assignee: Dow Corning GmbH
    Inventor: Ulrich W. Fahl
  • Bis(2-methoxyisopropyl) maleate
    Patent number: 4783552
    Abstract: Organosilicon compositions which cure by way of a metal-catalyzed reaction of silicon-bonded hydroxyl radicals and/or silicon-bonded olefinic hydrocarbon radicals with silicon-bonded hydrogen atoms are stabilized for hours at room temperature by the incorporation of a hydrocarbonoxyalkyl maleate. However, the stabilized compositions are rapidly curable at low elevated temperature. Liquid organopolysiloxane compositions of this invention are particularly useful for coating operations, particularly paper coating operations to prepare an adhesive-releasing layer.
    Type: Grant
    Filed: August 26, 1985
    Date of Patent: November 8, 1988
    Assignee: Dow Corning Corporation
    Inventors: Peter Y. K. Lo, LeRoy E. Thayer, Antony P. Wright
  • Method for making siloxane resins
    Patent number: 4774310
    Abstract: A method for making siloxane resins consisting essentially of tetravalent SiO.sub.2 units and monovalent R.sub.3 SiO.sub.0.5 and H.sub.a R.sub.3-a SiO.sub.0.5 units wherein each R denotes an alkyl group or an aryl group having less than 9 carbon atoms and a denotes 1 or 2, comprises reacting in the presence of an acidic catalyst a siloxane resin consisting essentially of R.sub.3 SiO.sub.0.5 units and SiO.sub.2 units with (H.sub.a R.sub.3-a Si).sub.2 O, where R and a are as defined above. Novel resins wherein only 0.1 to 30 percent of the monovalent units have SiH groups are also disclosed.
    Type: Grant
    Filed: June 15, 1987
    Date of Patent: September 27, 1988
    Assignee: Dow Corning, Ltd.
    Inventor: Derek W. Butler
  • Silicone pressure-sensitive adhesive composition
    Patent number: 4774297
    Abstract: A pressure-sensitive adhesive having an excellent tack and adhesive strength is obtained from a composition which comprises an organic solvent solution of an alkenyl group-containing silicone polymer having a gum-like consistency, a tackifying silicone resin, a curing agent for the alkenyl group-containing silicone polymer and a platinum-containing catalyst. The composition can be cured by heating at relatively low temperatures.
    Type: Grant
    Filed: June 3, 1987
    Date of Patent: September 27, 1988
    Assignee: Toray Silicone, Co., Ltd.
    Inventors: Ichiro Murakami, Yuji Hamada, Osamu Takuman
  • Heat-curable silicone compositions comprising fumarate cure-control additive and use thereof
    Patent number: 4774111
    Abstract: Compositions which cure by a platinum-catalyzed reaction between silicon-bonded hydrogen atoms and silicon-bonded, aliphatically unsaturated hydrocarbon radicals have improved pot-life and cure-rate characteristics when a catalyst-inhibiting amount of a diorgano fumarate compound is added to the composition. Solventless coating compositions containing a dialkyl fumarate, a methylhydrogenpolysiloxane and a methylpolysiloxane bearing hexenyl radicals are particularly useful as adhesive-release coatings for acrylic-based pressure sensitive adhesives, applied in-line.
    Type: Grant
    Filed: June 29, 1987
    Date of Patent: September 27, 1988
    Assignee: Dow Corning Corporation
    Inventor: Peter Y. K. Lo
  • Method of producing a silicone defoamer composition
    Patent number: 4749740
    Abstract: Foam control compositions are prepared by reacting a mixture of components which include a polyorganosiloxane fluid bearing one or more hydroxyl and/or hydrocarbonoxy groups, a resinous siloxane or a silicone resin-producing silicon compound, a finely divided filler material and a catalyst to promote the reaction of the listed components. The compositions can optionally contain a polyorganosiloxane fluid which is substantially free of reactive groups and/or a polyorganosiloxane fluid bearing two or more hydroxyl and/or hydrocarbonoxy groups.
    Type: Grant
    Filed: November 14, 1986
    Date of Patent: June 7, 1988
    Assignee: Dow Corning Kabushiki Kaisha
    Inventors: Koichi Aizawa, Shingo Sewa, Hideki Nakahara
  • Coating process and moisture-curable organopolysiloxane compositions therefor
    Patent number: 4743474
    Abstract: Novel organopolysiloxane compositions, which cure rapidly from the liquid to the non-liquid state when exposed to moisture, are used to rapidly coat a substrate, such as label release liner, with an adhesive-releasing coating. Curing of the liquid coating occurs in 5 seconds at room temperature in some cases. The organopolysiloxane compositions contain a large amount of a metal ester, such as tetraisopropyl titanate, dissolved in an organopolysiloxane fluid which has moisture-reactive, silicon-bonded alkoxysilylorganic radicals.
    Type: Grant
    Filed: April 30, 1984
    Date of Patent: May 10, 1988
    Assignee: Dow Corning Corporation
    Inventor: Gary R. Homan
  • Pressure sensitive adhesive release liner and fluorosilicone compounds, compositions and method therefor
    Patent number: 4736048
    Abstract: Pressure sensitive adhesives can be protected with a releasable liner having a cured fluoroalkyl silicone coating which contains as little as two percent fluoroalkyl-substituted siloxane units. In a preferred embodiment of this invention silicone pressure sensitive adhesives can be solvent-cast, and even cured, directly onto the release surface of the liner and can be removed from the protective liner with a force of no more than 400 grams per inch. The fluoroalkyl silicone copolymers of this invention are prepared by a process which involves the preparation of a cohydrolyzate of fluoroalkyl-containing and fluoroalkyl-free siloxane units, followed by further polymerization of the cohydrolyzate with other siloxane units.
    Type: Grant
    Filed: June 4, 1986
    Date of Patent: April 5, 1988
    Assignee: Dow Corning Corporation
    Inventors: Paul L. Brown, David L. Stickles
  • Method for protecting carbonyl iron powder and compositions therefrom
    Patent number: 4731191
    Abstract: Carbonyl iron powder (CIP) can be protected from extensive atmospheric oxidation by mixing and heating it with a silicon compound having one or more reactive groups. The resulting CIP is more readily accepted by a silicone binder when preparing mixtures thereof.
    Type: Grant
    Filed: December 31, 1985
    Date of Patent: March 15, 1988
    Assignee: Dow Corning Corporation
    Inventor: Terence J. Swihart
  • Organopolysiloxane compounds comprising epoxy-terminated polyoxyalkylene radicals
    Patent number: 4684709
    Abstract: Organopolysiloxane compounds containing at least one silicon-bonded, epoxy-terminated polyoxyalkylene group are useful for treating materials to provide hydrophilicity for the materials.
    Type: Grant
    Filed: February 25, 1986
    Date of Patent: August 4, 1987
    Assignee: Toray Silicone Co., Ltd.
    Inventors: Isao Ona, Masaru Ozaki, Tadashi Fujii
  • Benzoic and benzacrylic acid esters
    Patent number: 4661616
    Abstract: Compounds represented by the general formula ##STR1## when a and b are each 0 or 1 and R represents OH or lower alkoxy when a is 1, or OH or -NR'.sub.2 when a is zero. They can be prepared by the reaction of allyl glycidly ether with the appropriate organic acid e.g. salicylic acid.Useful as ultra-violet absorbent substances and as intermediates for the preparation of other such substances, for example by polymerization and copolymerization and by reaction with organosilicon compounds having silicon-bonded hydrogen atoms.
    Type: Grant
    Filed: September 2, 1986
    Date of Patent: April 28, 1987
    Assignee: Dow Corning, Ltd.
    Inventor: Michael P. Hill
  • Method for treating materials with organopolysiloxane compounds
    Patent number: 4645691
    Abstract: A method for treating a solid material to give it hydrophilic and/or antistatic properties comprises applying a composition containing a silicone compound to the material which has one or more alkoxysilylalkyl groups and one or more polyoxyalkylene groups. In a preferred embodiment the method is used to treat fibers and fiber-containing materials. The composition can further contain a curing agent for the silicone. Emulsion compositions are particularly useful.
    Type: Grant
    Filed: December 20, 1985
    Date of Patent: February 24, 1987
    Assignee: Toray Silicone Co., Ltd.
    Inventors: Isao Ona, Masaru Ozaki
  • Method of producing a silicone defoamer composition
    Patent number: 4639489
    Abstract: Foam control compositions are prepared by reacting a mixture of components which include a polyorganosiloxane fluid bearing one or more hydroxyl and/or hydrocarbonoxy groups, a resinous siloxane or a silicone resin-producing silicon compound, a finely divided filler material and a catalyst to promote the reaction of the listed components. The compositions can optionally contain a polyorganosiloxane fluid which is substantially free of reactive groups and/or a polyorganosiloxane fluid bearing two or more hydroxyl and/or hydrocarbonoxy groups.
    Type: Grant
    Filed: May 29, 1985
    Date of Patent: January 27, 1987
    Assignee: Dow Corning Kabushiki Kaisha
    Inventors: Koichi Aizawa, Shingo Sewa, Hideki Nakahara
  • Platinum (O) alkyne complexes and a method for their preparation
    Patent number: 4631310
    Abstract: A simplified method of manufacture for platinum (O) alkyne complexes is disclosed, as well as novel platinum (O) alkyne complexes per se. The complexes are made by reacting platinum-vinylsiloxane complexes with alkynes. The complexes are used in hydrosilylation, hydrogenation, isomerization and oligomerization reactions. Curable silicones using these platinum (O) alkyne complexes as curing catalysts are also disclosed.
    Type: Grant
    Filed: January 30, 1986
    Date of Patent: December 23, 1986
    Assignee: Dow Corning Corporation
    Inventors: Grish Chandra, Peter Y. Kwai Lo
  • Organosiloxane-oxyalkylene copolymers
    Patent number: 4631208
    Abstract: Organosiloxane-oxyalkylene copolymers in which a silicon atom of at least one organosiloxane unit has attached thereto the group--X(OR).sub.n OSiR'.sub.a (OR").sub.3-awherein X represents a divalent hydrocarbon group, R represents an alkylene group having 2 to 4 carbon atoms, n is an integer of at least 2, R' represents alkyl, vinyl, allyl or phenyl, R" represents alkyl or alkoxyalkyl and a has a value of 1 or 2, at least 40% of the total substituents in the copolymer being methyl.The copolymers are film forming and are particularly suitable for the treatment of textile fibres to facilitate the removal of oily stains during laundering.
    Type: Grant
    Filed: October 28, 1985
    Date of Patent: December 23, 1986
    Assignee: Dow Corning, Ltd.
    Inventor: Stephen Westall
  • Compositions and process for treating textiles
    Patent number: 4624794
    Abstract: A textile treating composition, useful as a composition for the softening of textiles during the rinse cycle of a laundry operation, comprises a cationic surfactant which is substantive to water rinse on textiles and a polydiorganosiloxane having at least one amido containing substitutent, preferably of the formula ##STR1## where R is an alkylene group. The composition is preferably utilized in the form of an aqueous dispersion. A process for treating textile fabrics is also described.Textile fabrics when treated with this composition exhibit a less greasy feel than prior art textile fabrics and also have an improved rewet time.
    Type: Grant
    Filed: May 24, 1985
    Date of Patent: November 25, 1986
    Assignee: Dow Corning, Ltd,
    Inventors: David J. Cooke, Brian J. Griffiths, Vivian B. John, George C. Sawicki
  • Organosiloxane polymers for treatment of fibres therewith
    Patent number: 4624676
    Abstract: Novel organosiloxanes containing units of the formula ##STR1## in which Q represents a divalent group composed of carbon and hydrogen, and optionally oxygen or sulphur, and R represents a monovalent hydrocarbon group, the organosiloxanes also containing at least two silicon-bonded substituents selected from hydrogen atoms, alkoxy groups and alkoxyalkoxy groups. The organosiloxanes can be applied to textile fibres, optionally in conjunction with crosslinking agents and catalysts, to impart thereto resistance to soiling by oily substances.
    Type: Grant
    Filed: December 27, 1985
    Date of Patent: November 25, 1986
    Assignee: Dow Corning, Ltd.
    Inventors: James W. White, Stephen Westall, Brian J. Griffiths
  • Organopolysiloxane compounds containing sic-bonded alkoxysilylalkyl and polyoxyalkylene radicals
    Patent number: 4616076
    Abstract: Organopolysiloxane compounds having both alkoxysilylalkyl radicals and polyoxyalkylene radicals are prepared so that the compounds have a substantially linear structure and at least one of the terminating radicals of the polysiloxane is either an alkoxysilylalkyl radical or a polyoxyalkylene radical. The compounds are particularly useful as a treating agent for conferring hydrophilic properties to a solid substrate.
    Type: Grant
    Filed: November 21, 1985
    Date of Patent: October 7, 1986
    Assignee: Toray Silicone Co., Ltd.
    Inventors: Isao Ona, Masaru Ozaki, Tadashi Fujii, Yoichioro Taki
  • Antimicrobic, antistatic siloxane compositions and method for treating materials
    Patent number: 4614675
    Abstract: A composition for treating a solid material to give it antimicrobic, hydrophilic and antistatic properties comprises siloxane compound which has one or more alkoxysilylalkyl groups and one or more polyoxyalkylene groups and a silane having antimicrobial properties. In a preferred embodiment the composition is used to treat fibers and fiber-containing materials. The composition can further contain a curing agent for the siloxane. Emulsion compositions are particularly useful.
    Type: Grant
    Filed: December 20, 1985
    Date of Patent: September 30, 1986
    Assignee: Toray Silicone Co., Ltd.
    Inventors: Isao Ona, Masaru Ozaki