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| Number | Title | Issue Date |
| 5194649 | Organopentasiloxane and method for its preparation This invention relates to an organopentasiloxane with the following formula ##STR1## wherein A is the hydrogen atom or an aliphatically unsaturated monovalent hydrocarbon group, R is the same or different monovalent hydrocarbon group, and n is an int... | 03/16/1993 |
| 5176960 | High-strength silicone rubber particulate A hydrophobic silica is prepared by mixing and heating a mixture of (a) 100 weight parts wet-method silica and (b) 1 to 100 weight parts organopolysiloxane represented by the following average unit formula R1a R2b | 01/05/1993 |
| 5171773 | High strength fluorosilicone rubber A fluorinated polydiorganosiloxane elastomer having improved physical properties can be obtained through the use of a method which first reacts a hydroxyl endblocked trifluoropropylmethylsiloxane having a Williams Plasticity Number of greater than 225 wit... | 12/15/1992 |
| 5162429 | Silicone water based elastomers An improved aqueous silicone emulsion which cures to a reinforced elastomer upon removal of water is obtained through the use of an anionic, stable dispersion of fumed silica in water as the source of reinforcing silica. The fumed silica dispersion is com... | 11/10/1992 |
| 5160681 | Method for the preparation of heterogeneous silicone rubber moldings A method is disclosed for preparing a heterogeneous silicone rubber molding wherein a portion of the molding is formed from a semicured silicone rubber particulate and a portion from a thermosetting silicone rubber composition. The mold is filled with the... | 11/03/1992 |
| 5160670 | Method of manufacturing silicone rubber moldings A method for the manufacture of silicone rubber moldings comprises the preparation of a silicone rubber composition by blending an organoperoxide having an activation energy of 25 to 41 kcal/mol into a semicurable organopolysiloxane composition whose main... | 11/03/1992 |
| 5145918 | Bonding polysulphide sealant to silicone A composition useful for adhering polysulfide sealant to silicone sealant or to silicone sealant contaminated surfaces is obtained by mixing 1 part by weight of alkoxy functional, titanate catalyzed silicone sealant with from 0.1 to 40 parts by eight of p... | 09/08/1992 |
| 5145907 | Precured silicone emulsion A shelf stable aqueous silicone emulsion which yields an elastomer upon removal of the water is produced by combining a reactive polydiorganosiloxane present as a cationic or nonionic emulsion of dispersed particles in water, a crosslinker, and a tin cata... | 09/08/1992 |
| 5126403 | Reinforced polyorganosiloxane elastomers A curable polydiorganosiloxane is reinforced by mixing with a solution of polyvinylalcohol (PVA) or a modified PVA. The polydiorganosiloxane is then cured and the solvent is extracted to yield a cured polydiorganosiloxane reinforced with PVA.... | 06/30/1992 |
| 5126400 | Reinforced polyorganosiloxane elastomers A curable polydiorganosiloxane is reinforced by mixing with a modified polyvinylalcohol (PVA). Fully hydrolyzed PVA is modified by dissolving or swelling in solvent, then adding a silylating agent of the formula R"b (R'2 SiO)n | 06/30/1992 |
| 5126208 | Optical laminates An optical laminate having improved resistance to delamination upon exposure to moisture consists essentially of a layer of organosiloxane composition, a primer layer, and a layer of organic elastomer. The organosiloxane composition comprises a polydiorga... | 06/30/1992 |
| 5118758 | Coprecipitated silicate-carbinol particles A fine powder is obtained by first dissolving polyvinylalcohol and tetraalkoxysilicate in a common solvent to obtain a reaction product, then spraying a fine mist of a solution of the reaction product into a coagulating bath of a solvent which is miscible... | 06/02/1992 |
| 5112512 | Solid polymer electrolyte of an organopolysiloxane crosslinked with polyalkylene oxide An ionically conductive material comprises crosslinked copolymer prepared by the reaction of (A) organopolysiloxane and polyoxyalkylene copolymer, which has at least 2 silicon-bonded hydrogen atoms in each molecule, with (B) polyoxyalkylene having at leas... | 05/12/1992 |
| 5089537 | UV curable silicone emulsions A silicone emulsion is prepared by emulsion polymerizing a hydroxyl endblocked polydiorganosiloxane oligomer with a combination of a siloxane or siloxane precursor containing unsaturated hydrocarbon groups and a functional silicone selected from the group... | 02/18/1992 |
| 5085803 | Method of preparing a conductive silicone rubber particulate A method of producing a conductive silicone rubber particulate is disclosed in which the particulate is from 0.1 to 100 micrometers average diameter and is coated on the surface with carbon black. The method prepares an aqueous dispersion of silicone rubb... | 02/04/1992 |
| 5084489 | UV curable silicone emulsions A silicone emulsion is prepared by emulsion polymerizing a hydroxyl endblocked polydiorganosiloxane oligomer with a combination of a siloxane or siloxane precursor containing unsaturated hydrocarbon groups and a functional silicone selected from the group... | 01/28/1992 |
| 5082873 | UV curable silicone emulsions A silicone emulsion is prepared by emulsion polymerizing a hydroxyl endblocked polydiorganosiloxane oligomer with a combination of a siloxane or siloxane precursor containing unsaturated hydrocarbon groups and a functional silicone selected from the group... | 01/21/1992 |
| 5075038 | Electrically conductive silicone compositions Improved silicone electrically conductive compositions can be prepared by using a polysiloxane which contains greater than 5 mole percent of the silicon atoms having an aromatic containing radical such as a phenyl radical attached, or having greater than ... | 12/24/1991 |
| 5073586 | Filled compositions The specification discloses a curable composition comprising 100 parts by weight of polysiloxane, 50 to 200 parts by weight of finely divided filler having an average particle size greater than 0.05 micron and not less than 0.5 parts by weight per 100 par... | 12/17/1991 |
| 5066520 | Method of protecting porous masonry A process for improving the adhesion of aqueous silicone elastomeric materials to porous masonry substrates consists essentially of first coating the substrate with an aqueous silicone emulsion which provides an elastomeric coating upon removal of the wat... | 11/19/1991 |
| 5053442 | Low modulus silicone sealants A process for producing a silicone sealant, which is stable in the absence of moisture, cures when exposed to moisture, has an elongation at break of greater than 800 percent, and has adhesion to concrete. The silicon sealant is produced by first mixing a... | 10/01/1991 |
| 5051455 | Adhesion of silicone sealants A moisture curing silicone sealant which adheres to a variety of substrates is produced by a method which first mixes a trialkoxysilethylene endblocked polydiorganosiloxane, a trialkoxysilane crosslinker, and a beta-dicarbonyl titanium catalyst, then adds... | 09/24/1991 |
| 5049611 | Silacyclobutane functional polymers and their production The silacyclobutane functional polydiorganosiloxane copolymers of the invention have the following structure: ##STR1## wherein M is selected from ##STR2## wherein Ra, Rb, Rc, Rd, Re, and R | 09/17/1991 |
| 5036131 | Protective coating for electrical components A silicone dispersion, having improved toughness and thixotropic characteristics, cures to an elastomer upon exposure to the air. The dispersion is particularly useful for spraying onto exposed electrical conductors to prevent their shorting out from cont... | 07/30/1991 |
| 5026769 | Method of producing silicone emulsion A method of obtaining an aqueous silicone emulsion which dries to an elastomer comprises mixing (1) hydroxyl endblocked polydiorganosiloxane free of aliphatic unsaturation, (2) silicon hydride crosslinker, (3) platinum compound catalyst compatible with th... | 06/25/1991 |
| 5026768 | Method of producing silicone emulsion A method of obtaining an aqueous silicone emulsion which dries to an elastomer comprises mixing (1) hydroxyl endblocked polydiorganosiloxane free of aliphatic unsaturation, (2) silicon hydride crosslinker, (3) platinum compound catalyst compatible with th... | 06/25/1991 |
| 5017671 | Polycyclosiloxanes containing silacyclobutane This invention describes a polycyclosiloxane of the formula ##STR1## where Ra, Rb, and Rc are independently monovalent radicals; x is an integer equal to or greater than 3, y is equal to or greater than 0, and x plus ... | 05/21/1991 |
| 5017672 | Polyalkoxysilylalkylenedisilazanes and silylamines A polyalkoxysilylalkylenedisilazane of the formula ##STR1## and a polyalkoxysilylalkylenesilylamine of the formula ##STR2## where x is 0 or 1; R is a saturated alkyl or aryl radical or mixture of radicals; R' is alkyl, aryl, or Cellosolve (R) al... | 05/21/1991 |
| 5017628 | Asphalt highway joint sealant A self-leveling silicone composition, which is useful as a sealant in contact with asphalt, cures upon exposure to moisture in the atmosphere to an elastomer having an elongation of at least 1200 percent, and a modulus at both 50 and 100 percent elongatio... | 05/21/1991 |
| 5008305 | Treated silica for reinforcing silicone elastomer An improved reinforcing silica filler can be produced by treating a reinforcing silica, having a surface area of greater than 50 m2 /g and from 0.5 to 6 parts by weight of adsorbed moisture per 100 parts by eight of silica, with a volatile trea... | 04/16/1991 |
| 5007765 | Sealing method for joints Joints between surfaces are sealed by a method which cleans the joint surfaces, installs a backer rod between the joint surfaces, applies a sealant in the space over the backer rod and allows the sealant to cure. The backer rod is an open cell foam having... | 04/16/1991 |
| 5002995 | Acrylic rubber composition An acrylic rubber composition containing an amino group-containing silicon compound is characterized by excellent roll workability and a rapid vulcanization rate and characteristically does not require secondary vulcanization.... | 03/26/1991 |
| 5001187 | Emulsions of silicone elastomer An aqueous, silicone emulsion of polydiorganosiloxane having silacyclobutane groups comprises the product obtained by the emulsion polymerization of a mixture of polydiorganosiloxane oligomer having hydroxyl endblocking and silacyclobutane containing sili... | 03/19/1991 |
| 5001183 | Method of hydrophobing silica A method of producing hydrophobic colloidal silica is disclosed. The method comprises combining an aqueous colloidal silica dispersion, polyorganosiloxane, and anionic surfactant to yield a stable aqueous emulsion of hydrophobic colloidal silica. The emul... | 03/19/1991 |
| 5001186 | Method of producing silicone emulsion A method of obtaining an aqueous silicone emulsion which dries to an elastomer comprises mixing (1) hydroxyl endblocked polydiorganosiloxane free of aliphatic unsaturation, (2) silicon hydride crosslinker, (3) platinum compound catalyst compatible with th... | 03/19/1991 |
| 4999131 | Method and apparatus for the preparation of a water based dispersion of a viscous liquid A method and apparatus is provided for the preparation of liquid dispersions comprising the uniform dispersion of a viscous liquid formed of strands, threads or columns, such as a silicone polymer in water.... | 03/12/1991 |
| 4990555 | Preparation of hydroxy terminated polysiloxanes The specification discloses a method of preparing a polysiloxane by chain extension of a silicon compound having chain terminating units including a silicon-bonded hydroxyl group which comprises bringing about condensation of the silicon-bonded hydroxyl g... | 02/05/1991 |
| 4985477 | Method of producing treated silica filler for silicone rubber An improved method of producing treated silica filler for use with silicone rubber operates at ambient temperature in a short period of time. The method consists essentially of mixing reinforcing silica with a volatile treating agent of the formula R... | 01/15/1991 |
| 4985565 | Silacyclobutanes Novel silacyclobutanes useful as silylating agents and a process for their preparation are provided. The process comprises reacting a halogen substituted silacyclobutane with a silylating reagent to exchange the halogen substituents with groups on the sil... | 01/15/1991 |
| 4985578 | Preparation of modified polysiloxanes The specification describes a method of preparing a polysiloxane including at least one siloxane unit having a silicon-bonded group --OX in which X is a saturated or unsaturated hydrocarbon group, for example methyl, alkenyl or alkynyl. The method compris... | 01/15/1991 |
