Abstract: A silicone composition having superior moisture- and photocurability and easy to manufacture is provided.A polyorganosiloxane having primary amino, (meth)acryl or epoxy groups at both ends is reacted with a compound having two to three hydrolyzable groups and also having (meth)acryl or epoxy group in the case where the said end groups are primary amino groups, or also having a primary amino group in the case where the said end groups are (meth)acryl or epoxy groups, then the resulting reaction product is reacted with a compound having vinyl group and (meth)acryl, epoxy or isocyanato group, to prepare a polysiloxane having hydrolyzable groups and vinyl group, and this polysiloxane is combined with a photopolymerization catalyst and a moisture-curing catalyst.

Abstract: A screw-type resin injection apparatus for injection molding which includes a cylinder element having a cylinder chamber for receiving resin therein, and having, at an end portion, a nozzle for injecting the resin. A screw element is arranged within the cylinder chamber in a manner allowing rotation and axial movement. A rotary drive shaft is connected to the screw element telescopically so as to be capable of transmitting a torque. The rotary drive shaft is rotatively driven by a motor. A fluid pressure cylinder unit is arranged laterally of the cylinder element in parallel relation thereto. The fluid pressure cylinder unit is rotatably engaged with the screw element to drive the screw axially. Preferably, the screw element is provided with a mixing screw portion which has a screw groove small in pitch and large in lead angle and an axial groove extending axially.

Abstract: A self-locking agent for a fastening device comprises a microencapsulated adhesive composition comprising the following constituents (a) to (c):(a) an epoxy compound having at least two epoxy groups,(b) an aromatic diamine represented by the following formula (a) or (b): ##STR1## wherein R.sub.1 to R.sub.4 each represent CH.sub.3, C.sub.2 H.sub.5, C.sub.3 H.sub.7, CH(CH.sub.3).sub.2, C.sub.4 H.sub.9 or a halogen, or ##STR2## wherein R.sub.5 to R.sub.7 each represent CH.sub.3, C.sub.2 H.sub.5, C.sub.3 H.sub.7 or a halogen, and(c) at least one compound selected from the group consisting of thiosalicylic acid, salicylic acid, benzoic anhydride, boron trifluoride and boron trifluoride complexes, wherein at least one of the epoxy compound (a) and aromatic diamine (b) is microencapsulated to keep them apart from each other, said self-locking agent has excellent thermal resistance and storage stability.

Abstract: Disclosed is an organosilicon compound represented by the general formula ##STR1## wherein m and n are each an integer of 1 to 5, R.sup.1 and R.sup.2 are each independently an alkyl group having 1 to 3 carbon atoms or allyl, and a is an integer of 0 to 2. This organosilicon compound is a novel compound capable of affording a photopolymerizable organopolysiloxane of high quality.

Abstract: Disclosed is an apparatus for applying a viscous liquid material and a method of controlling the discharge of the viscous liquid material. The apparatus has a movable nozzle having a port for discharging the viscous liquid material in a predetermined discharging direction. The nozzle is movably arranged to controllably trace a predetermined track. A shutter for controllably closing the port of the nozzle includes a shiftable member arranged on the port to move relative to the port between a first position and a second position along a plane which crosses the discharging direction of the nozzle so that the shiftable member release and covers the port of the nozzle. The present invention is suitable for application on a loop track or a closed path. In the method, it is preferred that the first position is located on the front side of the second position facing toward a direction in which the nozzle advances at termination of tracing with the viscous liquid material.

Abstract: A composition useful as a liquid gasket, having high working efficiency and high initial pressure resistance, is provided. The composition, characterized by being curable by ultraviolet light and by moisture, includes (a) a polysiloxane containing, on at least one molecular end, at least one group selected from the group consisting of (meth)acryl, glycidyl, propenyloxysilyl and thiol; (b) a polyorganosiloxane having silanol groups at both molecular ends; (c) a polyorganosiloxane having, on at least one molecular end, a hydrolyzable group; (d) a photopolymerization catalyst; and (e) a condensation catalyst.

Abstract: The present invention is directed to a non-emissive, bimodal cured polymeric network which has an onset degradation temperature that is about 100.degree. C. above the onset degradation temperature of a base polymer. The novel cured polymeric network comprises the cured reaction product of the following ingredients: (a) combination of one or more liquid carrier monomers or prepolymers which combination is reactive to form a base polymer by exposure to ultraviolet (UV) radiation in the presence of a UV photosensitizer at a temperature, T.sub.uv ; and (b) between about 10 and 100 wt-% based on ingredient (a) of a combination of one or more monomers or prepolymers which combination is reactive to form a cured high temperature stable polymer by heating at a temperature, T.sub..DELTA.. Ingredient (b) is soluble or dispersible in ingredient (a) at a temperature, T.sub.s, wherein T.sub.s is equal to or lower than T.sub.uv, and T.sub.uv is at least about 50.degree. C. lower than T.sub..DELTA..

Abstract: A novel neopentyl .alpha.-cyanoacrylate composition is provided. The composition which includes neopentyl .alpha.-cyanoacrylate has superior adhesive properties even at high temperatures and is characterized by the absence of the whitening phenomenon.

Abstract: A microcapsule adhesive for preventing the loosening of screws and the like, which is superior in storage stability, adhesive force and safety, and which is comprised of an epoxy resin as a core material; a urea-formaldehyde resin, a melamine-formaldehyde resin, a polyurethane or a urea-urethane resin as a wall material; a water-soluble polyacetal resin binder; and a non-volatile, water-soluble or -dispersible amine-based curing agent.

Abstract: A novel neopentyl .alpha.-cyanoacrylate is provided. It has superior adhesive properties even at high temperatures and whitening-preventing property.

Abstract: A method of forming a foamed gasket comprising the steps of separately introducing a composition of expandable polysiloxanes consisting of two liquids of a main agent and a curing agent into a mixing chamber having a special rotor secured in the inside thereof, mixing the two liquids in the mixing chamber by rotating the rotor, discharging the obtained mixture on the sealing part of an article to be coated such as waterproof case of a car and foaming and curing the mixture to form a foamed gasket.The present invention is excellent in workability and may be applied to the on-line system, and the obtained foamed gasket is excellent in sealability.

Abstract: A silicon-containing alpha-cyanoacrylate, useful as an adhesive, having the general formula: ##STR1## wherein R.sup.1 is an alkylene group containing 1 to 6 carbon atoms; and R.sup.2, R.sup.3 and R.sup.4 are each alkyl groups containing 1 to 6 carbon atoms, is disclosed. A process for preparing the silicon-containing alpha-cyanoacrylate compound is also set forth. In this process a cyanoacetate having the structural formula ##STR2## wherein R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are as defined above, is dehydrocondensed with formaldehyde or paraformaldehyde in the presence of a basic catalyst to produce a condensation polymer. The condensation polymer is thereupon depolymerized at elevated temperature to produce the silicon-containing alpha-cyanoacrylate.

Abstract: A method of forming a sealant comprising steps of introducing liquids A and B, which are respectively prepared with specified organopolysiloxanes into a mixing chamber having a special rotor secured on the inside thereof, mixing the liquids A and B in the mixing chamber by rotating the special rotor, discharging the obtained mixture on the sealing surface of an article, such as an oil pan of car, and curing it to form the sealant.The liquids A and B may be cured rapidly and finely to a deep level by mixing them in about equal amounts, and thus they are easily and homogeneously mixed, discharged on the sealing surface, and cured to form the sealant with said mixing chamber, and accordingly, the method is excellent in workability and is applied to on-line systems.

Abstract: An apparatus for splicing and sealing plural conductive wires comprising a support member and a flexible sealant held in the interior of the support member and a method for splicing and sealing plural conductive wires employing the apparatus are provided.

Abstract: The precipitation of a filler containing silicone composition can be prevented by incorporating a condensation product of D-solbitol and benzaldehyde.

Abstract: A tool for applying liquids has a nozzle portion which is provided with a spatulate section having a discharge orifice in the side thereof from which the liquid emerges. The spatulate section is mounted on a tool body which is freely rotatable, so that the liquid may be applied to the surface of a tubular object in a convenient manner.

Abstract: An anaerobic composition comprising a polymerizable monomer having at least one ethylenic double bond, a free radical initiator and at least one azole compound.

Abstract: An anaerobically curing adhesive sealing composition comprising (A) a mono(meth)acrylate monomer represented by formula (I) ##STR1## wherein R.sub.1 represents a hydrogen atom or a methyl group; and R.sub.2 represents ##STR2## and (B) a (meth)acrylate prepolymer having a urethane structure in the main chain thereof and having an average molecular weight of 10,000 or more and further containing (C) a (meth)acrylate prepolymer having a urethane structure in the main chain thereof and an average molecular weight of at most 5,000. The sealing composition exhibits, upon curing, excellent elasticity and properties to follow an adherend while retaining excellent resistance to oil and heat as possessed by acrylate type reactive sealing compositions.

Abstract: A method for isolating components in a multi-part composition is disclosed herein. In this method, the individual components are preserved in an isolation relation, and if intended to be used, they are mixed. The components each contain a consistency imparting agent added thereto and are applied onto a support plate in such a manner that the different components are disposed in close vicinity to one another. Such multi-part compositions may be used as adhesives, sealants, coatings, casting materials and the like. The components may be applied in various patterns.

Abstract: An anaerobically curable composition having a good stability and suitable for use primarily as an adhesive, which comprises a radically polymerizable acrylate and/or methacrylate monomer, and a naphthyl azoxine. The composition is satisfactorily stable even if a large amount of an inorganic filler is used therein.