Abstract: A sealing device for an elevator door includes a doorway member, doors, a movable member, a push-down mechanism and a sealing mechanism. The doorway member is provided for a gate. The doors open or close along the doorway member. The movable member is set horizontally and provided to be movable in a vertical direction in the doorway member, and it is urged upwards by an urging unit. The push-down mechanism pushes down the movable member against the force of the urging unit just before the doors are closed. The sealing mechanism is kept non-contact with the doors while they are moving, and seals the gap between the doors and the doorway member as it is brought into contact with upper section of the doors when the movable member is pushed down by the push-down mechanism.

Abstract: A sealing device for an elevator door includes a doorway member, doors, a movable member, a push-down mechanism and a sealing mechanism. The doorway member is provided for a gate. The doors open or close along the doorway member. The movable member is set horizontally and provided to be movable in a vertical direction in the doorway member, and it is urged upwards by an urging unit. The push-down mechanism pushes down the movable member against the force of the urging unit just before the doors are closed. The sealing mechanism is kept non-contact with the doors while they are moving, and seals the gap between the doors and the doorway member as it is brought into contact with upper section of the doors when the movable member is pushed down by the push-down mechanism.

Abstract: The present invention provides a transparent inorganic oxide dispersion which makes it possible to improve the refractive index and mechanical characteristics and to maintain transparency by modifying the surface of inorganic oxide particles with a surface modifier having one or more reactive functional groups; and an inorganic oxide particle-containing resin composition in which the transparent inorganic oxide dispersion and a resin are compositely integrated by the polymerization reaction, a composition for sealing a light emitting element, a light emitting element, and a method for producing an inorganic oxide particle-containing resin composition; and a hard coat film which has high transparency and makes it possible to improve a refractive index and tenacity, an optical functional film, an optical lens and an optical component.

Abstract: A sealing device for an elevator door includes a doorway member, doors, a movable member, a push-down mechanism and a sealing mechanism. The doorway member is provided for a gate. The doors open or close along the doorway member. The movable member is set horizontally and provided to be movable in a vertical direction in the doorway member, and it is urged upwards by an urging unit. The push-down mechanism pushes down the movable member against the force of the urging unit just before the doors are closed. The sealing mechanism is kept non-contact with the doors while they are moving, and seals the gap between the doors and the doorway member as it is brought into contact with upper section of the doors when the movable member is pushed down by the push-down mechanism.

Abstract: The acrylic copolymer of the present invention is an acrylic copolymer comprising recurring units derived from a (meth)acrylic ester compound and recurring units derived from a vinyl compound having --SO.sub.3 R (wherein R represents a hydrogen atom or a lower alkyl group) or having an acceptable salt thereof, wherein at least a part of ester groups of the (meth)acrylic ester compound is substituted by a group having recurring units derived from a (meth)acrylic ester. The present invention further provides a process for the preparation of the acrylic copolymer and use application of the acrylic copolymer utilizing its adhesion properties.

Abstract: A repeatedly usable and releasable sheet is coated thereon with an adhesive copolymer microspheres-containing aqueous suspension and polymer microparticles prepared by polymerization of one or more vinyl monomers. In the presence of a protective colloid comprising casein, the microspheres is prepared by aqueous suspension polymerization of (a) from 70 to 99.9 percent by weight of one or more monomers selected from the group consisting of alkyl acrylate esters and alkyl methacrylate esters, (b) from 0.1 to 10 percent by weight of one or more .alpha.-monoolefin carboxylic acids and (c) from 0 to 29.9 percent by weight of one or more vinyl monomers other than the foregoing (a) and (b).

Abstract: A repeatedly usable and releasable sheet is coated thereon with an adhesive copolymer microspheres-containing aqueous suspension and polymer microparticles prepared by polymerization of one or more vinyl monomers. In the presence of a protective colloid comprising casein, the microspheres is prepared by aqueous suspension polymerization of (a) from 70 to 99.9 percent by weight of one or more monomers selected from the group consisting of alkyl acrylate esters and alkyl methacrylate esters, (b) from 0.1 to 10 percent by weight of one or more .alpha.-monoolefin carboxylic acids and (c) from 0 to 29.9 percent by weight of one or more vinyl monomers other than the foregoing (a) and (b).