Patents Represented by Attorney George A. Grindahl

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  • Acylamino silicon compounds, their use and preparation
    Patent number: 4608270
    Abstract: Organosilicon compounds containing at least one acylamino-substituted hydrocarbon radical are prepared by reacting an organosilicon compound containing at least one amino-substituted hydrocarbon radical with an acyl halide in the presence of an aqueous solution of an alkaline material and a solvent for the aminosilicon compound. The reaction is particularly useful for preparing polydiorganosiloxanes which contain one or more acrylylamino-substituted hydrocarbon radicals, which are polymerizable and are useful in coating compositions such as adhesive release coating compositions.
    Type: Grant
    Filed: October 25, 1985
    Date of Patent: August 26, 1986
    Assignee: Dow Corning Corporation
    Inventor: Padmakumari J. Varaprath
  • Method for silalactone preparation and use
    Patent number: 4604478
    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 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 catalyst, such as N,N-dimethylbenzylamine.
    Type: Grant
    Filed: May 17, 1985
    Date of Patent: August 5, 1986
    Assignee: Dow Corning Corporation
    Inventor: Donnie R. Juen
  • Platinum (O) alkyne complexes
    Patent number: 4603215
    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: August 20, 1984
    Date of Patent: July 29, 1986
    Assignee: Dow Corning Corporation
    Inventors: Grish Chandra, Peter Y. K. Lo
  • Compositions and process for treating hair
    Patent number: 4601902
    Abstract: A hair treating composition which comprises (1) a silane or a polydiorganosiloxane having quaternary ammonium substituted groups attached to silicon, (2) a polydiorganosiloxane having silicon-bonded substituents which are amino-substituted hydrocarbon groups, (3) one or more surfactants, and (4) water. The compositions can be formulated as e.g. hair conditioning agents or as shampoos.
    Type: Grant
    Filed: July 19, 1984
    Date of Patent: July 22, 1986
    Assignee: Dow Corning Ltd.
    Inventors: Petrina F. Fridd, Rosemary M. Taylor, Michael P. Hill
  • Organosiloxane polymers and treatment of fibres therewith
    Patent number: 4599438
    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: October 31, 1983
    Date of Patent: July 8, 1986
    Assignee: Dow Corning, Ltd.
    Inventors: James W. White, Stephen Westall, Brian J. Griffiths
  • Curable silicone compositions for the protection of polyurethane foam
    Patent number: 4595610
    Abstract: There is disclosed a room temperature curing silicone for protecting polyurethane foam. The silicone coating provides protection from ultraviolet light, water penetration, and mechanical damage. The silicone coating comprises a particular organosilicon resin, an hydroxy-ended silicone polymer, fillers, and an organotin catalyst.
    Type: Grant
    Filed: July 2, 1984
    Date of Patent: June 17, 1986
    Assignee: Dow Corning Corporation
    Inventors: Kenneth C. Fey, Harold V. Lefler, III
  • Platinum-phosphine-vinylsiloxane complexes
    Patent number: 4593084
    Abstract: A new method for making platinum-phosphine complexes and novel platinum-phosphine-vinylsiloxane complexes are disclosed. These complexes can be used in curable silicone compositions, thus providing curable silicone compositions of greatly enhanced stability at room temperature. The ability of the compositions to cure at elevated temperatures is not significantly compromised.
    Type: Grant
    Filed: November 19, 1984
    Date of Patent: June 3, 1986
    Assignee: Doe Corning Corporation
    Inventors: Grish Chandra, Peter Y. K. Lo
  • Method for making carboxyfunctional silicone glycols
    Patent number: 4587320
    Abstract: Carboxyfunctional silicone glycols are made by equilibration at elevated temperatures of silicone glycols in which the glycol radical or radicals are bonded to silicon with an Si--C linkage and carboxyfunctional siloxanes in which the carboxy radical or radicals are bonded to silicon with an Si--C linkage in the presence of an acid catalyst which is capable of breaking Si--O linkages but not Si--C linkages. The carboxyfunctional silicone glycols so produced are of the type which are useful as profoamers, surfactants, spreading agents for active chemicals, such as pesticides, hydrophilizing treatments for fabrics and hair, as emollients in cosmetic formulations and as chelates.
    Type: Grant
    Filed: December 21, 1984
    Date of Patent: May 6, 1986
    Assignee: Dow Corning Corporation
    Inventor: Terence J. Swihart
  • Curable organopolysiloxane compositions
    Patent number: 4587136
    Abstract: Compositions curable by radiation e.g. UV radiation are disclosed and claimed which comprise an organosiloxane having at least two siloxane units including groups --RSH, an organosiloxane having at least two siloxane units including ethylcyclohexenyl groups, and a photoinitiator. The compositions cure on exposure to UV radiation and may be used to produce on a variety of substrates coatings which are of reduced odor. Also, disclosed and claimed is a method of treating a substrate which comprises applying a coating of such compositions and irradiating the coating. Examples given refer to production of coatings on paper substrates to provide cured coatings.
    Type: Grant
    Filed: March 20, 1985
    Date of Patent: May 6, 1986
    Assignee: Dow Corning Ltd.
    Inventors: James W. White, Brian J. Griffiths
  • Fiber-treating method and composition therefor comprising epoxy-silicone and acrylamide resin
    Patent number: 4578084
    Abstract: Fiber materials having improved properties such as hand, lubricity, flexibility and creaseproofness, are provided by applying to the fiber material an aqueous composition which contains an epoxy group-containing organopolysiloxane and a water-soluble polyacrylamide resin and thereafter removing the water from the applied composition. Preferably the water is removed with sufficient heating to accelerate a crosslinking of the organopolysiloxane and the polyacrylamide resin. The resulting improved properties are durable to laundering and/or dry cleaning.
    Type: Grant
    Filed: September 17, 1984
    Date of Patent: March 25, 1986
    Assignee: Toray Silicone Co., Ltd.
    Inventors: Hideo Kakinoki, Isao Ona
  • Magnetic recording medium and composition and method therefor
    Patent number: 4575474
    Abstract: A composition which is useful for preparing a magnetic recording medium is prepared by homogeneously mixing components comprising a magnetic powder, a resin binder and a partial hydrolyzate of an organosilicon compound which contains at least two silicon-bonded hydrolyzable groups and at least one carbon-bonded amino group. When conventionally applied to a substrate to provide the magnetic recording media, the compositions of this invention provide a magnetic layer which is more durably attached to the substrate. Improved magnetic recording media, such as magnetic tapes, are thereby provided.
    Type: Grant
    Filed: December 2, 1983
    Date of Patent: March 11, 1986
    Assignee: Toray Silicone Co., Ltd.
    Inventors: Shoji Akamatsu, Takeshi Imai
  • Heat-curable silicone compositions, use thereof and stabilizer therefor
    Patent number: 4562096
    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: December 24, 1984
    Date of Patent: December 31, 1985
    Assignee: Dow Corning Corporation
    Inventors: Peter Y. K. Lo, LeRoy E. Thayer, Antony P. Wright
  • Organosilicon compounds and preparation and use thereof
    Patent number: 4562278
    Abstract: Organosilicon compounds which are silanes or siloxanes characterized by the presence of silicon-bonded groups of the formula ##STR1## in which X represents --OH, --OCH.sub.3 or OC.sub.2 H.sub.5 when p=1 or --OH or dialkylamino when p=0, n can be 0 or 1 and p=0 or 1.
    Type: Grant
    Filed: October 12, 1984
    Date of Patent: December 31, 1985
    Assignee: Dow Corning, Ltd.
    Inventor: Michael P. Hill
  • Peellable film-forming organopolysiloxane compositions
    Patent number: 4559396
    Abstract: Room temperature-storable, heat-curable organopolysiloxane compositions which comprise silicon-bonded vinyl radicals, silicon-bonded hydrogen atoms, a platinum-type compound and an unsaturated hydrocarbon compound of the conjugated ene-yen type provide a realease surface for tacky substances when coated onto the surface of a base material and heated, even mildly. The release surface possesses a time-stable release ability, particularly for pressure sensitive adhesive bearing articles such as tapes and labels.
    Type: Grant
    Filed: April 29, 1983
    Date of Patent: December 17, 1985
    Assignee: Toray Silicone Company, Ltd.
    Inventors: Shosaku Sasaki, Nobuo Kaiya, Akihiko Shirahata
  • Organosilicon compounds and preparation and use thereof
    Patent number: 4554369
    Abstract: Organosilicon compounds which are silanes or siloxanes characterized by the presence of silicon-bonded groups represented by the general formula ##STR1## in which R' is a divalent hydrocarbon group which may contain ether oxygen, R" represents --CHBCH.sub.2 -- or --C.sub.6 H.sub.9 B-- in which B is OH or the group ##STR2## a and n are each 0 or 1 and Y is --OH, lower alkoxy or --NX.sub.2 wherein X represents hydrogen or lower alkyl.The compounds are prepared by the reaction of an organosilicon compound having an organic substituent which contains an epoxy group, and the appropriate acid or acid chloride. They absorb ultra violet radiation and are useful as cosmetic and other sunscreen agents.
    Type: Grant
    Filed: August 16, 1984
    Date of Patent: November 19, 1985
    Assignee: Dow Corning Ltd.
    Inventors: Michael P. Hill, Gilbert H. Pittet
  • Organosiloxanes and preparation thereof
    Patent number: 4545980
    Abstract: Process for preparing organosiloxanes having in the molecule at least one unit of the general formula ##STR1## in which R is C.sub.1-4 alkyl or a phenyl group, R' represents an aliphatic or aromatic group composed of carbon, hydrogen and optionally oxygen and having a valency of n+1, Y represents OH or alkoxy, a is 0, 1 or 2, b is 0 or 1 and n is 1, 2 or 3. The process comprises reacting an organosiloxane having silicon-bonded hydroxyalkyl or hydroxyaryl substituents with the appropriate acid chloride.The organosiloxanes absorb ultra violet radiation and are useful as sunscreen agents.Also claimed are certain novel siloxanes which can be obtained by the said process.
    Type: Grant
    Filed: March 1, 1985
    Date of Patent: October 8, 1985
    Assignee: Dow Corning Ltd.
    Inventor: Michael P. Hill
  • Method and siloxane composition for treating fibers
    Patent number: 4541936
    Abstract: An aqueous emulsion comprising an aminoorgano-substituted organopolysiloxane fluid, a silane which bears a hydrophilic group, one or more surfactants and water are useful for treating fibers, such as thread, yard and textiles. When applied to a fiber and heated the composition undergoes a curing reaction and durably imparts desirable properties, such as excellent hand and moisture absorbability, to the fiber.
    Type: Grant
    Filed: August 20, 1984
    Date of Patent: September 17, 1985
    Assignee: Toray Silicone Company, Ltd.
    Inventors: Isao Ona, Masaru Ozaki
  • Oil emulsions of fluorosilicone fluids
    Patent number: 4537677
    Abstract: Emulsions of fluorosilicone fluids in mineral oil are disclosed. These emulsions are stabilized by a polydimethylsiloxane- polybutadiene copolymer or a polydimethylsiloxane-hydrogenated polybutadiene copolymer. The emulsions are an effective foam suppressant for organic liquids, especially crude petroleum.
    Type: Grant
    Filed: November 5, 1984
    Date of Patent: August 27, 1985
    Assignee: Dow Corning Corporation
    Inventor: Joseph W. Keil
  • Skin care formulations comprising a water-in-mineral oil emulsion and siloxane compositions therefor
    Patent number: 4532132
    Abstract: Organopolysiloxane-polyoxyalkylene block copolymers having a limited number of dimethylsiloxane units, at least one 6 to 16 carbon alkyl radical and at least one polyoxyalkylene radical are good emulsifiers for preparing water-in-mineral oil emulsions if the polyoxyalkylene radicals do not account for more than 1/3 of the molecular weight of the block copolymer. The block copolymers are readily dispersible or dissolvable in mineral oil to which a personal care component can be added. Personal care emulsion compositions can then be prepared by emulsifying an aqueous phase into the mineral oil phase.
    Type: Grant
    Filed: April 11, 1983
    Date of Patent: July 30, 1985
    Assignee: Dow Corning Corporation
    Inventor: Joseph W. Keil
  • Coating method and silicone composition for PSA release coating
    Patent number: 4530882
    Abstract: Moisture-curable silicone compositions for adhesive-release coatings comprising an alkoxysilylorganosiloxane, a titanium ester and an aminoorganosiloxane have an adhesive-release force, when cured, which is directly related to the amount and type of aminoorganosiloxane. The compositions are useful for coating a flexible sheet material, such as paper or polymeric film, to provide a surface that will release pressure sensitive adhesive with a pre-selected release force of up to 400 g/in (154 N/m). Thin coatings of the composition cure in as little as 15 seconds when exposed to moisture.
    Type: Grant
    Filed: December 24, 1984
    Date of Patent: July 23, 1985
    Assignee: Dow Corning Corporation
    Inventors: Gary R. Homan, David L. Stickles