Abstract: Fabrics coated with an organopolysiloxane composition containing (a) an organopolysiloxane having aliphatic unsaturation, (b) an organohydrogenpolysiloxane having SiH groups in which the silicon to hydrogen ratio is from 10:1 to 1:1, (c) a catalyst which is capable of promoting the addition of SiH groups to the aliphatically unsaturated groups, (d) a hydrophobic silica filler, (e) a flame retardant and optionally an adhesion promoting agent.The coated fabric can be used in manufacturing air bags for automobiles.

Abstract: The invention provides a water based mixture of a rubber latex and a resin emulsion containing ground rubber which provides a high adhesion coating having excellent air bleed when coated on an uncured rubber article which is thereafter cured or vulcanized.

Abstract: A non-stick automotive gasket which comprises a resilient material having a polymeric fluorocarbon coating thereon which is obtained by impregnating the resilient material with a saturant having dispersed therein polymeric fluorocarbon particles.

Abstract: A platinum catalyst which is prepared by reacting a platinum halide with an organic compound having at least one --C.tbd.C-- group in the presence or absence of a base to form a complex which promotes the addition of silicon-bonded hydrogen atoms to silicon-bonded aliphatic unsaturated hydrocarbon groups in the presence of no-clean flux.

Abstract: Detergent resistant compositions comprising an aqueous emulsion of hydrocarbonoxy end-blocked branched organopolysiloxanes containing from 10 to 99 mol percent of R.sub.2 SiO units and from 90 to 1 mol percent of R.sub.3 SiO.sub.3/2 units and/or SiO.sub.4/2 units, where R is a monovalent hydrocarbon radical. Other silicone fluids such as aminofunctional, silicone fluids, organoalkoxysilanes, silicone resins, organopolysiloxane fluids and silicone gums as well as abrasive materials, surfactants and organic solvents may be incorporated in the aqueous emulsions.

Abstract: The invention relates to a silicone elastomer having reduced compression set which is obtained by heating a composition comprising:(a) an organopolysiloxane having an average of at least two Si-bonded aliphatically unsaturated monovalent hydrocarbon radicals,(b) an organohydrogenpolysiloxane having at least two silicon-bonded hydrogen atoms per molecule,a platinum catalyst which is capable of promoting the addition of silicon-bonded hydrogen atoms to the aliphatically unsaturated monovalent hydrocarbon radicals, and(d) an iron-manganese spinel.to an elevated temperature.

Abstract: Silicone compositions which, when exposed to atmospheric moisture at room temperature cure to form a flame retardant elastomer comprising (a) an organopolysiloxane having terminal hydroxyl groups, (b) a cross-linking agent having an average of at least three functional groups linked to a silicon atom per molecule, in which the functional groups are selected from the group consisting of hydrocarbonoxy groups, amine groups, aminoxy groups, oxime groups and mixtures thereof, (c) a condensation catalyst, (d) platinum metal or compound thereof, (e) carbon black, (f) alumina hydrate and optionally (g) a filler.The resultant flame retardant silicon elastomers are useful as insulation for electrical equipment, as encapsulants and as sealants where flame retardancy is necessary.

Abstract: The invention provides a water based mixture of a rubber latex and a resin emulsion containing ground rubber which provides a high adhesion coating having excellent air bleed when coated on an uncured rubber article which is thereafter cured or vulcanized.

Abstract: A stacker-cutter-weigher apparatus for supplying a continuous supply of a product having a preselected weight which comprises extruding a continuous stock of polymeric material having a substantially stable cross-sectional area, cutting the stock into finite sections, and placing the sections on a scale. The measured weight is sensed by a central control which adjusts the length of the next section so as to adjust the weight thereof. A further adjustment occurs as each section is placed on the scale. This provides a final product having a substantially preselected weight.

Abstract: Compositions which are stable at room temperature, but when heated to an elevated temperature crosslink to form elastomeric solids comprising(A) organopolysiloxanes containing silicon bonded hydroxyl groups,(B) a crosslinking agent selected from(a) silanes,(b) partial hydrolyzates thereof and(c) organohydrogenpolysiloxanes and(C) an aluminum salt of a carboxylic acid which is a solid at room temperature.When the compositions are heated to a temperature of at least 50.degree. C. and more preferably from 100.degree. to 350.degree. C., they cure to form elastomeric solids.

Abstract: A method for molding rubber articles having a transparent coating thereon which includes coating the outer surface of an uncured rubber article with an aqueous composition containing a preformed latex binder, an emulsifying agent, an inorganic fluoro-containing compound having a refractive index of from 1.32 to 1.49 and a thickening agent and thereafter vulcanizing the coated rubber article. The resultant coated rubber article is free of surface defects.

Abstract: Radiation polymerizable acrylate- or methacrylate-functional organo-polysiloxanes having the structural formula ##STR1## wherein R is a radical selected from the group consisting of monovalent hydrocarbon radicals having from 1 to 20 carbon atoms, substituted monovalent hydrocarbon radicals having from 1 to 20 carbon atoms, monovalent hydrocarbonoxy radicals having from 1 to 20 carbon atoms and a radical of the formula: ##STR2## in which at least one R is a radical of formula (I), R.sup.1 is hydrogen or a methyl radical, R.sup.2 is selected from the group consisting of a multivalent hydrocarbonoxy radical and a multivalent hydrocarbonoxy radical containing non-terminal atoms selected from the group consisting of oxygen, sulphur and nitrogen atoms, R.sup.3 is a divalent hydrocarbon radical or a divalent hydrocarbonoxy radical, a is a number having an average value of from 0.7 to 2.6, b is a number of from 1 to 5, and x is a number from 2 to 1000.

Abstract: Aqueous coating compositions for applying to rubber articles comprising latex, an emulsifying agent, an inorganic fluoro-containing compound as a filler, which has a refractive index of from 1.32 to about 1.49, a thickening agent, and a compound which imparts mechanical stability to the composition. The composition is applied to the surface of rubber articles prior to molding to impart air venting and release properties thereto and to provide a clear, transparent coating thereon.

Abstract: This invention relates to sulfur containing organopolysiloxane waxes containing(1) at least three mole percent of siloxane units of the formula ##STR1## (2) at least one mole percent of siloxane units selected from the formulas ##STR2## (3) and from 0 to 96 mole percent of siloxane units have the formula ##EQU1## where R is a monovalent hydrocarbon radical having from 1 to 10 carbon atoms, R.sup.1 is an alkyl radical linked to silicon having an average of at least 25 carbon atoms, R.sup.2 is a multivalent radical selected from a hydrocarbon radical having from 2 to 10 carbon atoms which is free of aliphatic unsaturation, a hydrocarbon ether or a hydrocarbon thioether, a is an integer of from 0 to 2, b is an integer of 1 or 2, c is an integer of 1 or 2, d is an integer of from 0 to 2, e is an integer of from 0 to 3, and the sum of a+b is 1, 2 or 3, and the sum of c+d is 1, 2 or 3.

Abstract: Apparatus and method for filling open-ended tubes to a level below the top of the open end of the tube with a hydraulic silicone elastomer wherein a first composition and a second composition are provided to a static mixer and the mixture is supplied to the tube. The level of the elastomer in the tube is sensed by an ultrasonic sensor. When the desired predetermined level of the elastomer in the tube is reached, a signal from the ultrasonic sensor terminates the flow into the tube. The filling rate includes a fast fill rate followed by a dribble rate. The tube is vertically adjustable relative to the level sensor, and an adjustable tube stop provides a precise level adjustment.

Abstract: Apparatus for applying a coating to semiconductor chips mounted within apertures in a dielectric film. The film containing the semiconductor chips and input-output connectors is fed from a reel past an applicator for applying the coating on one side of the chips. After passing through a curing chamber, the film passes about a substantially square sprocket so as to reverse the direction of travel. The sprocket is of such a dimension that the film bends on a line between each individual chip or a selected group of chips. The strip then passes by another applicator for coating the other side of the chips. After passing through the curing chamber, including a substantially square sprocket, the film is wound on a driven sprocket. The coating may be a silicone composition, an epoxy resin, or a urethane composition.

Abstract: An aqueous organopolysiloxane emulsion containing (1) hydroxyl-containing organopolysiloxanes, (2) organohydrogenpolysiloxanes, (3) a lubricant having a melting range of from 25.degree. to 80.degree. C., (4) mica, (5) a thickening agent, (6) a surfactant, and (7) water, which may be used as a bladder lubricant for molding tires.

Abstract: Organopolysiloxanes having improved electrical properties, which comprises mixing an organopolysiloxane having reactive groups with an amine-containing organosilicon compound, which is capable of crosslinking with the organopolysiloxane and a treated alumina trihydrate and thereafter exposing the resultant composition to atmospheric moisture. The resultant composition may be dispersed in an organic solvent and applied to electrical insulators.

Abstract: An electrically conductive organopolysiloxane composition containing (1) an organopolysiloxane capable of being crosslinked, (2) a crosslinking agent capable of reacting with the organopolysiloxane, (3) from 120 to 200 parts by weight of silver coated mica particles per 100 parts by weight of organopolysiloxane (1) in which the silver coated mica particles contain from 50 to 80 percent by weight of silver based on the weight of the mica and (4) sufficient carbon black to stabilize the composition.

Abstract: A process for preparing radiation polymerizable acrylate-functional organopolysiloxane-urethane copolymers by reacting aminofunctional polysiloxanes with acrylated urethane oligomers in the presence of a solvent.