Abstract: The silicone rubber adhesive of the present invention is composed of a particular organopolysiloxane, condensation reaction catalyst and organoperoxide in restricted blending ratios. As a result, a characteristic of the present invention is that various organic materials may be tightly and durably bonded to silicone rubbers by applying the adhesive of the present invention to the surface of a cured silicone rubber and laying on and then curing an organic material such as a synthetic rubber composition, for example, ethylene-propylene terpolymer rubber or chloroprene rubber, or a phenol resin, epoxy resin, etc. In addition, it is also a characteristic of the present invention that silicone rubber may be tightly bonded to various materials by applying the silicone rubber adhesive of the present invention to various organic materials as mentioned above, bringing a silicone rubber composition which contains a curing catalyst into contact and then curing.

Abstract: A silicone elastomer having improved fatigue resistance is obtained by heat-curing a composition consists essentially of an organopolysiloxane gum having vinyl endblocking, an organopolysiloxane gum having from 0.1 to 2.0 percent of the organic radicals present as alkenyl radicals, an organopolysiloxane fluid having from 10 to 75 percent of the radicals present as alkenyl radicals, an organohydrogenpolysiloxane having at least 2 silicon-bonded hydrogen radicals in each molecule, a specific silica filler, and an organoperoxide.

Abstract: The present invention produces a silicone polymer-filler mixture by passing prescribed quantities of silicone oligomer, filler and polymerization catalyst through a continuous kneader extruder with kneading and polymerization of the silicone oligomer into silicone polymer. A homogeneous silicone polymer-filler mixture is rapidly produced in a single process with low energy consumption.The silicone polymer-filler mixture produced by the present method is useful as a base for diverse silicone rubber compositions, silicone compounds and silicone greases, etc.

Abstract: Optical communications fibers made by coating with an addition curable composition made from an alkenyl containing organopolysiloxane, a methylhydrogenpolysiloxane, a platinum-type catalyst, and an alkynyl compound provide reduced hydrogen gas generation on quartz fiber and has less transmission loss when the platinum-type catalyst is present in amounts greater than 20 ppm platinum-type metal, the SiH to aliphatically unsaturated is from 0.75/1.00 to 1.05/1.00, and the weight ratio of total alkynyl groups to platinum-type metal is 1.0/1.0 to 15.0/1.00.

Abstract: This invention provides organosiloxane compositions that are stable under ambient conditions and convert to cured sponge rubber when heated.The compositions comprise an alkenyl-substituted polyorganosiloxane, a polyorganohydrogensiloxane, a platinum-type catalyst, a platinum catalyst inhibitor and an alkaline earth metal compound exhibiting a pH of at least 10.0.

Abstract: A primer composition for heat curable silicone rubber compositions has been developed which provides adhesion to various synthetic rubbers, plastics, and inorganic materials. The primer composition is composed of three components. Component (I) consists of component (A) or (B). Component (A) consists of an organosilicon compound containing at least one epoxy group-containing monovalent hydrocarbon group, and at least one silicon-bonded lower alkenyl group or silicon-bonded hydrogen atom in each molecule. Component (B) consists of a mixture of (a) an organosilicon compound which possesses silicon-bonded hydroxyl and silicon-bonded lower alkenyl or silicon-bonded hydrogen, and (b) an organotrialkoxysilane containing at least one epoxy group-containing monovalent hydrogen group. Component (II) comprises a trialkoxysilane or its partial hydrolysis product. Component (III) comprises an organotitanate ester.

Abstract: Room temperature curing organopolysiloxane composition which are paintable after curing can be made by mixing hydroxyl-terminated organopolysiloxane, a paintability compound which contains at least one X--R.sup.1 --O-- silicon-bonded group and at least one aminoxy or amido group bonded to a silicon atom where X is ##STR1## and R.sup.1 is a divalent hydrocarbon group, and a crosslinking compound which is a silicon compound having at least two silicon-bonded aminoxy and amido groups. These compositions can cure to low modulus sealing materials useful in building construction and by being paintable allow the color to be determined after installation rather than needing to select a pre-pigmented composition.

Abstract: A jointed watertight, airtight, elastomer-coated material is described. The material consists essentially of a first elastomer-coated fabric material and a second elastomer-coated fabric material, said second material being overlaid at an edge over an edge of the first material. The overlaid portion of each material is laminated to the other with a pressure-sensitive adhesive intercalated between the two materials. The laminated portion is further bound with a fastener which penetrates across the laminated portion in an up-and-down manner. Typical fasteners are thread, rivets, or bolts. The jointed material can be further bound by a tacky tape which is adhered on the bound portion of one material and the unbound portion of the other material, covering the joint between the edges of the two materials. The jointed waterproof, airtight, elastomer-coated fabric material is particularly useful for air-supported structures.

Abstract: A noncuring transparent organopolysiloxane composition obtained from a mixture of phenyl containing organopolysiloxane with at least 50% methyl radicals and 5 to 20% phenyl radicals and a finely divided silica treated with a phenyl containing silane or polysiloxane and a hydroxyl or hydrolyzable group is used in optical communications components, such as filler or a coupling agent.

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.

Abstract: Silicone elastomeric films of 1 to 500 microns can be made by coating an addition-curable or dehydrocondensation-curable silicone elastomer composition on a coated paper which has a peeling resistance of no more than 50 g/cm, curing the composition, and then peeling the film from the coated paper. These thin silicone elastomeric films can be used for gas separation.

Abstract: A room temperature vulcanizable polyorganosiloxane composition which cures to products, such as silicone rubber, which do not soil easily are made from mixing silanol containing polyorganosiloxane, ketoxime silicon compounds such as organotriketoximosilanes, and organotitanates.

Abstract: A cured product which resists soiling under outdoor exposure obtained from a mixture of a silanol containing polyorganosiloxane having at least one silicon-bonded oxyalkylene radical of the formula --R.sup.1 O(R.sup.2 O).sub.n R.sup.3 and a curing agent.

Abstract: There is disclosed herein a gas pressure operated dispensing container for viscous liquids in which a collapsible compartment containing the liquid is mounted inside a pressurized canister and has an end closure fitted with a dispensing valve having a elastomeric valve seal inside the compartment. A rigid reinforcing ring frictionally engages the end closure and prevents collapse of the top portion of the collapsible compartment. The ring has one or more air passages extending from a point on its internal periphery below the area of engagement with the end closure to the top thereof. The air passages are, for example, longitudinal notches in the ring spaced around its circumference and serve to allow air to pass out of the compartment as the end closure is applied.

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.

Abstract: Described is a method of producing silicone aqueous emulsion compositions which cure at room temperature by the removal of water to form elastomeric coatings or films with superior surface gloss, good adhesion to substrates, and rustproofness. The method prepares an emulsion of polydiorganosiloxane having at least two hydroxyl groups per molecule, colloidal silica or alkali metal silicate, curing catalyst, emulsifier, and water, the emulsion having a pH of from 9 to 12. After a period of ripening for a period of time, so that an elastomeric material will be formed when water is removed at room temperature, an amino-functional silane or its partial hydrolyzate is added to give the emulsion its improved properties.

Abstract: This invention describes a water-impermeable elastomer-coated cloth composite in which the end sections of mutually adjacent elastomer-coated cloths are overlapped and sewn together in such a way that the thread passes up and down through this overlapped section. After a seam is sewn together, it is covered by an adhesive tape applied so that it extends over the sewn section of the seam and onto the portion of each section of the cloth beyond the sewn section to form a strong, watertight, airtight composite.

Abstract: What is disclosed is a composition of matter useful in expediting the coagulation of whole blood. The coagulation promoter is a polysiloxane which contains at least one hydroxy functional or carboxylic functional monovalent hydrocarbon radical bonded to a silicon atom.

Abstract: A heat fixer roll made from a core covered with a layer of heat-resistant rubber coated with a layer of evaporated metal is useful in dry type electric photocopying machine to prevent the offset phenomenon.

Abstract: Integral silicone molded products comprising a unitary structure of a substrate with different phases is made by coating a substrate with a mixture of an alkenyl containing polyorganosiloxane, a polyorganohydrogensiloxane, and an addition-reaction catalyst where at least one component is applied to the substrate and then additional components are applied and diffuse to result in a coating with a polyorganosiloxane phase whose degree of crosslinking is low and a polyorganosiloxane phase whose degree of crosslinking is high and the phase having the low degree of crosslinking is next to the substrate. Such molded products are coated hybrid IC transistors, solar battery modules, and optical fibers.