Abstract: A one-pack room temperature-curable sealant composition, namely, liquid gasket (FIPG) manifesting an excellent adhesive property and chemical resistance also for an automobile magnesium alloy material single body, and being able to be used also for cast iron and aluminum members and the like conventionally used is provided. (A) an organopolysiloxane which both ends of the molecular chain are each blocked by a hydroxyl group and the viscosity at 25° C. is from 30000 to 70000 mPa·s, (B) a cross-linking agent, (C) zinc carbonate and/or zinc oxide, (D) tabular alumina having an average particle size of 5 &mgr;m or less, and (E) a silane coupling agent of the following general formula (1):  (wherein R1, R2 and R3 represent a divalent hydrocarbon group having 1 to 3 carbon.). are combined, to provide one-pack room temperature-curable sealant composition for use in automobile.

Abstract: A manicure composition for nail, which contains: a cyanoacrylate composition; and a natural oil extracted from a plant, the proportion of the natural oil being from 0.01 to 10 parts by weight per 100 parts by weight of the cyanoacrylate composition.

Abstract: A one-pack room temperature-curable sealant composition, namely, liquid gasket (FIPG) manifesting an excellent adhesive property and chemical resistance also for an automobile magnesium alloy material single body, and being able to be used also for cast iron and aluminum members and the like conventionally used is provided.

Abstract: An epoxy resin composition comprising, as main components, (a) 100 parts by weight of a polyfunctional epoxy resin which stays liquid at an ordinary temperature and has two or more glycidyl groups in the molecule thereof, (b) 3 to 80 parts by weight of a curing agent and (c) 1 to 100 parts by weight of a modified epoxy resin, is suitable as an underfill sealing agent, is capable of heat-curing in a short time with a good productivity, is capable of surely connecting a semiconductor device such as a CSP and a BGA on a wiring board without giving an adverse effect on each part disposed on the wiring board by heat-curing at a relatively low temperature, has excellent heat shock property (temperature cycling property) and impact resistance, is free from bleeding of contaminants from its cured product, and is capable of easily detaching the CSP or BGA from the wiring board in the case where a defect is found, making it possible to reuse a normal wiring board or semiconductor device.

Abstract: A photocurable composition comprising (A) an &agr;-cyanoacrylate and (B) a metallocene compound comprising a transition metal of Group VIII of the periodic table and aromatic electron system ligands selected from &pgr;-arenes, indenyl, &eegr;-cyclopentadienyl. The photocurable composition may further comprise (C) a cleavage-type photoinitiator. The photocurability of the photocurable composition can be greatly improved by incorporating a cleavage type photoinitiator into the composition. Even when the composition contains a radical-polymerizable compound such as an acrylic compound, it can be rapidly cured due to the cleavage type photoinitiator contained therein. In the case where the cleavage-type photoinitiator used is a peroxide, heating can also be used to cure the composition. In the case where the cleavage type photoinitiator used is an azo compound, the composition can be foamed by regulating the addition amount of the photoinitiator or the quantity of light with which the composition is irradiated.

Abstract: A liquid resin composition (26) comprising A) an addition-polymerizable oligomer which has, as the backbone thereof, a linear polyisobutylene or perfluoropolyether structure and has an alkenyl group at least at each end, B) a hardener containing, in its molecule thereof, at least two hydrogen atoms each bonded to a silicon atom, and C) a hydrosilylation catalyst is three-dimensionally crosslinked to form a sealing layer in a unit cell (20) of a fuel cell assembly to thereby seal separators (24) and (25), a pair of electrodes (22) and (23), and an ion-exchange resin (21) as a solid electrolyte. Thus, each cell can be reduced in thickness and size to enable the fuel cell assembly to have a high output.

Abstract: When dust or contaminants invade into a hard disk drive and adhere to the surface of a magnetic head, there arise operation errors in recording and reading out signals. Accordingly, it has been required to develop compositions containing little outgas components as ultraviolet-curing resins to be used in assembling hard disk drives.

Abstract: Grafted-polysilanes with a greater efficiency for the photoinitiation of vinyl type resins are provided. These grafted polysilanes which include both grafted cyclic polysilanes and grafted networked polysilanes have variable composition and length molecular chains grafted onto the silane backbone which aid in the solubility in vinyl type resins.

Abstract: A process for producing a microencapsulated electroconductive filler comprising conductive filler particles each having an insulating resin coated on the surface thereof, which comprises: a first step of treating the surface of conductive filler particles with a coupling agent having reactive functional group A at a terminal end or in a side chain of its molecule; and a second step of allowing the coupling agent having functional group A present on the surface of the conductive filler particles to undergo nonaqueous polymerization reaction with a reactant B which is polymerizable with the functional group A, to thereby form an insulating resin layer on the surface of the conductive filler particles.

Abstract: An anaerobic curable sealant composition is disclosed which is suitable as a fluid gasket for use in portions to be sealed in the field of automobile parts for example and which is superior in oil resistance and flexibility, the flexibility being retained even in a high-temperature atmosphere. The composition is prepared by adding core-shell fine particles consisting of a core of a rubbery polymer and a shell of a glassy polymer to an anaerobic curable sealant comprising a urethane (meth)acrylate prepolymer, a radical-polymerizable monomer and an organic peroxide. It has a repulsive force high enough to retain flexibility and sealability capable of coping with vibrations and external stresses induced in a seal portion and is superior in oily surface adhesion.

Abstract: In a battery in which a metallic battery case for accommodating electricity-generating elements also serves as an electrode, a visible-light or near-infrared-light curing resin is used for providing a coating to insulate an end face and a peripheral edge portion of an opening portion of the battery case or a gap between a positive electrode and a negative electrode. The visible-light or near-infrared-light curing resin excels in a depth-curing characteristic as compared with a conventional ultraviolet curing resin, and cures well even up to a portion such as an insulating seal of a battery where a light-receiving port is light and the light is difficult to reach. Hence, the visible-light or near-infrared-light curing resin is prevented from becoming peeled off and provides a reliable insulting characteristic.

Abstract: A pump unit is provided which sucks a material having a high viscosity contained in a container and to pump it to a nozzle under pressure. An axial member which performs sucking and pumping of the material is connected with the pump unit. The axial member is axially slidable by the pressure of air supplied to the cylinder. The material which is sucked into the pump unit is discharged from the nozzle by the increase in pressure occurred when the axial member descends. A sensor is provided in the vicinity of the axial member. A result of detection of the sensor is supplied to a controller. A reference speed when constant rate application is performed is presettable in the controller. Correction of pressure is conducted by comparing the actual moving speed of the axial member with the reference speed.

Abstract: An adhesive composition for use in precoating a screw member or the like, which comprises: (A) a suspension solution comprising a mixture of: (A1) one or more polymerization accelerator; (A2) one or more compound having at least one polymerizable double bond at a terminal thereof or in a side chain thereof; (A3) one or more acidic substance which becomes acidic after dissolved in water; and (A4) an aqueous binder which has an emulsifying capability and which is water-insolubilized by the acidic substance (A3); and (B) microcapsules containing one or more polymerization initiator. Also disclosed is a preparation process of the adhesive composition.

Abstract: There is provided an adhesive composition for use as an adhesive agent for bonding a flexible lining tube on to the internal surface of an existing old pipe. Such an adhesive composition comprises: a) an epoxy resin; b) a thixotropy agent mainly containing silica fine particles; c) a lubricant mainly containing spheroidal fine particles; d) a curing agent having a sufficient compatibility with the thixotropy agent, and being used in a sufficient amount to cure the epoxy resin. In particular, the above components a),b),c) together form a main agent, and the above components b) and d) together form an auxiliary agent. Before use, the main agent and the auxiliary agent are separated from each other. When in use, the main agent and the auxiliary agent are mixed together, so as to form the adhesive composition for use as an adhesive agent for bonding a flexible lining tube on to the internal surface of the existing old pipe.

Abstract: A brush-equipped container for a cyanoacrylate adhesive, the container comprising: a container main body comprising a polyolefin resin; and a cap for capping the container main body, which has a brush member provided on the inner side of the cap so that the brush member is housed in the container main body, the brush member comprising a handle and bristles, wherein at least the container main body is coated with a gas-impermeable coating material which is insoluble in the cyanoacrylate and which has poor adhesion property with respect to the cyanoacrylate.

Abstract: In order to improve the reliability of sealing property of a flare-type pipe joint, a flare-type pipe joint is designed such that a sealing material composition containing thermosetting resin, a curing agent, and fluororesin powder is applied onto a conical flange surface which abuts on a flare portion and then subjected to heat treatment so that the sealing material composition is subjected to crosslinking reaction to thereby form an elastic sealing layer. Further, it is preferable that the fluororesin powder is non-sintered fluororesin powder which is not subjected to crystallizing treatment made by sintering process.

Abstract: The present application discloses battery sealant compositions which exhibit excellent flexibility and chemical (alkalinity) resistance properties without requiring the use of organic solvents. These compositions comprise an epoxy resin, such as polybutadiene epoxy resin; a polyol material, such as a butadiene polyol; a cationic photoinitiator; and optionally a radiation curable monomer, such as a vinyl ether monomer. Electrochemical (battery) cells which incorporate a seal made by the photoinitiated polymerization of this material is is also disclosed.

Abstract: A method of bonding an artificial nail to a nail with a photocurable cyanoacrylate adhesive or of decorating an artificial nail or a nail using the adhesive. The adhesive comprises (A) an cyanoacrylate monomer, (B) a catalyst selected from the group consisting of a metallocene compound comprising a transition metal of Group VIII of the periodic table and aromatic electron system ligands, and a mixed catalyst consisting of a combination of a cleavage-type photoinitiator and a metallocene compound comprising a transition metal of Group VIII of the periodic table and aromatic electron system ligands, an acetylacetonatoplatinum(II) complex, and a specific metal complex which releases a nucleophilic agent upon light irradiation.

Abstract: Disclosed is an assembly seal for use in assembly comprising: packing formed in a predetermined shape from an elastic material; a core within the packing for providing substantial rigidity such that can maintain the desired shape of the packing; and a base for supporting the core, the base having substantial rigidity and being connected to the core portion in such a manner that the base can be easily separated from the core by a cutting operation. The assembly seal is used in an assembly method for assembling a plurality of parts into a set of assembled parts incorporating packing. The assembly method comprises the steps of: positioning the assembly seal so that the packing of the assembly seal is positioned at a specified position on one part of a set of assembled parts; separating the base of the assembly seal from the packing; removing the base so that only the packing of the assembly seal is left on said one part; and fitting the other parts of said set of assembled parts to said one part.

Abstract: A one-part type radiation curable silicone composition capable of curing at an ordinary temperature is provided. The silicone composition comprises an unsaturated group-containing polyorganosiloxane and a polysilane in which at least one at least two silicon atoms are bonded to each other and which has at least one polyorganosiloxane group in a side chain thereof.