Abstract: Foamable organosiloxane compositions which yield, upon cure, silicone foams having low density and decrease friability, comprising (A) a siloxane base polymer system which is a combination of a high molecular weight hydroxyl-group containing siloxane polymer and a low molecular weight hydroxyl-group containing siloxane polymer; (B) a silicon-containing crosslinker for the siloxane base polymer system, wherein the crosslinker contains at least two --SiH groups per molecule; (C) a platinum group catalyst; and optionally (E) a blowing agent; and silicone foams prepared therefrom. A method of weather-stripping a door or window using the silicone foam so prepared.
Type:
Grant
Filed:
December 16, 1996
Date of Patent:
September 23, 1997
Assignee:
Dow Corning Corporation
Inventors:
Brian Paul Loiselle, Lawrence Joseph Rapson
Abstract: Organosiloxane compositions exhibiting excellent vibration damping properties comprise(A) from 70 to 99.9 weight percent of a liquid polyorganosiloxane,(B) from 0.1 to 10 weight percent of hollow particles of a thermoplastic organic resin, and(C) from 0 to 20 weight percent of a thickener.
Abstract: Thermally conductive silicone rubber compositions, curable to elastomers having low permanent compression strain ratios, consisting of a polyorganosiloxane, a thermally conductive inorganic filler, an organosilicon compound having in each molecule at least three groups represented by the general formula of HR.sup.1.sub.2 Si, and an organic peroxide.
Abstract: What is disclosed herein is a seating and kneeling appliance which is adaptable to and is useful for providing comfort and support to a person who is cleaning a bathtub or assisting another person in the bathtub. The device is fabricated from essentially from plastic and is foldable. In use, the device rests on the outside wall of the bathtub and on the floor to provide support for an individual that is using the device.
Abstract: What is disclosed herein is a removable shift slide stabilizer tool used in the repair and maintenance of inboard-outboard engines used on watercraft.
Abstract: What is disclosed herein is a novel device for retaining liquids, such as water, such as in the control of flood waters. Also disclosed is its utility as a portable wall system which can be used to build support structures for swimming pools, synthetic watering ponds for animals, such as cattle, water storage for crops, and for water intended to be a source for fire use.
Abstract: A room temperature curable organosiloxane composition, containing an alkenyl-containing polyorganosiloxane, an organohydrogensiloxane, a platinum catalyst, a methylvinylcyclosiloxane and an acetylenic alcohol, which exhibits a long working time and a fast cure time.
Type:
Grant
Filed:
March 5, 1996
Date of Patent:
May 13, 1997
Assignee:
Dow Corning Corporation
Inventors:
Donnie R. Juen, Kent R. Larson, Myron T. Maxson, Lawrence J. Rapson
Abstract: This invention provides a continuous profile comprising a crosslinked foam matrix and a continuous filament embedded within the matrix. The profile is prepared by 1) extruding in an upward direction a composite consisting essentially of a foamable and crosslinkable composition containing a continuous filament, followed by 2) crosslinking and foaming the composition while the composition is in a substantially non-flowing state and supported by the filament.
Type:
Grant
Filed:
June 14, 1995
Date of Patent:
April 22, 1997
Assignee:
Dow Corning Corporation
Inventors:
Daniel N. Kemp, Dennis M. Schnettler, Ronald W. Wieck
Abstract: A method of preparing a self-releasing silicone foam in which a composition containing a siloxane polymer, an organohydrogensiloxane, a platinum catalyst, a polyol, and preferably a monofunctional alcohol is foamed, cured, and then post cured at an elevated temperature. A method of reducing the cycle time of preparing a cured silicone foam in which the above composition is applied to a plastic substrate, foamed, cured, post cured at an elevated temperature and then separated from the plastic substrate.
Type:
Grant
Filed:
January 22, 1996
Date of Patent:
March 25, 1997
Assignee:
Dow Corning Corporation
Inventors:
Jack R. Harper, Brian P. Loiselle, William R. Nicholson, Lawrence J. Rapson
Abstract: A stable and highly productive method for the preparation of silicone foam having uniform cells characterized by mixing the base and curing agent portions of an organosiloxane, along with a gas-containing hollow filler in a mixing device having a shear-stirring mechanism such that the organosiloxane begins to foam and cure when the shear-stirring mechanism is used to rupture the filler and mix the base and curing agent portions.
Abstract: Lubricant compositions comprising at least one hydroxyphenyl-substituted polydiorganosiloxane and having an average phenol equivalent weight within a specific range exhibit excellent heat resistance, releasing characteristics, and lubricity, and are suitable for use as mold release agents, for achieving toner release in electrostatic copiers and as lubricants during false twisting of textile fibers.
Type:
Grant
Filed:
September 26, 1995
Date of Patent:
February 4, 1997
Assignee:
Dow Corning Toray Silicone Co., Ltd.
Inventors:
Hiroki Ishikawa, Tsutomu Naganawa, Isao Ona
Abstract: The present invention relates to a method of controlling the polymerization of acrylates using a catalyst which is selected from at least one of zinc, cadmium, or mercury halides in combination with free iodine to give acrylate polymers having narrow molecular weight distributions, via group transfer polymerization.
Abstract: What is disclosed herein relates to curable silicone compositions which provide high strength foams or elastomers. These foams or elastomers have high strength properties which are provided by a combination of non-resinous organopolysiloxanes as the base polymer. The high strength properties are better than the high strength properties of cured silicone compositions where only one non-resinous organopolysiloxane polymer type is employed. These compositions have the added benefit of being less expensive than resin based formulations.
Type:
Grant
Filed:
January 17, 1996
Date of Patent:
November 12, 1996
Assignee:
Dow Corning Corporation
Inventors:
Donnie R. Juen, William R. Nicholson, Lawrence J. Rapson
Abstract: Organosiloxane oligomers wherein at least a portion of the siloxane units contain a silicon-bonded phenyl or phenylalkyl radical are suitable diluents for organosiloxane/oxyalkylene copolymers when these copolymers are used as thixotropic agents in the crosslinking agent portion of multi-part moisture curable organosiloxane compositions.
Type:
Grant
Filed:
September 18, 1995
Date of Patent:
October 8, 1996
Assignee:
Dow Corning Corporation
Inventors:
Joan M. Donatelli, Daniel F. McMahon, David R. Salverson
Abstract: Packing materials for liquid chromatographic or catalytic columns are prepared by contacting a porous protein-adsorptive particulate or membranous support, such as a porous silica particulate support, with an aqueous solution into which a protein has been dissolved to form a saturated coating of protein on the external surfaces of the porous protein-adsorptive support, removing excess protein that remains in solution by washing, and, then crosslinking the protein in the coating. The result is a packing material which resists further adsorption by many different proteins but which continues to provide the adsorptive or catalytic properties of the groups on the internal surfaces of the porous protein-adsorptive support for separations, analysis, or alteration of small molecules. The packing material of the present invention is particularly useful in HPLC or solid phase extraction columns for direct injection drug analysis in plasma, serum, and urine.
Abstract: What is disclosed in this specification are utility boards and utility boards and power modules in combination. The utility boards include such devices as tackboards, marker boards, or other detachable panels. The boards are decorative, have varied utility and have the capability of providing a power source at the desktop level while being highly portable.
Type:
Grant
Filed:
October 31, 1994
Date of Patent:
September 17, 1996
Inventors:
James F. Bird, Douglas E. Huesdash, Lawrencw E. Pierce, Robert L. Shaw
Abstract: The present invention provides a silicone antifoaming agent composition excellent in the persistence of the foam controlling effect. The silicone antifoaming agent composition comprises a polydiorganosiloxane and silica, which form an antifoaming agent to be improved, and 4 to 2,500 parts by weight per 100 parts by weight of the sum total of the polydiorganosiloxane plus silica of a modified silicone oil having at least one organic group bonded to a silicon atom and having at least one functional group selected from among epoxy, amino, amide, carboxyl, alkoxyl and hydroxyl groups and at least one substituted or unsubstituted polyoxyalkylene group bonded to a silicon atom.
Abstract: This invention deals with novel sound collecting blocks and their use, in conjunction with novel connector blocks, to build inexpensive, decorative sound walls. This invention also deals with retaining walls which are constructed from the novel connector block, and other non-sound absorbing solid blocks.
Abstract: An exercise device for improving the performance of age or disease impaired human respiratory systems. The device depends on the use of a respiratory exerciser which contains a novel piston which does not itself contact internal diameter of the tube in which it is situated except for the interface created by a rubber disk which is centered in the piston.
Abstract: Packing materials for liquid chromatographic or catalytic columns are prepared by contacting a porous protein-adsorptive particulate or membranous support, such as a porous silica particulate support, with an aqueous solution into which a protein has been dissolved to form a saturated coating of protein on the external surfaces of the porous protein-adsorptive support, removing excess protein that remains in solution by washing, and, then crosslinking the protein in the coating. The result is a packing material which resists further adsorption by many different proteins but which continues to provide the adsorptive or catalytic properties of the groups on the internal surfaces of the porous protein-adsorptive support for separations, analysis, or alteration of small molecules. The packing material of the present invention is particularly useful in HPLC or solid phase extraction columns for direct injection drug analysis in plasma, serum, and urine.