Abstract: A resin emulsion for a coating material, which contains emulsion particles each having an inner layer and an outer layer, and wherein: each emulsion particle has a resin layer containing a polymer (I) that is obtained by emulsion polymerizing a monomer component A containing 80 to 100% by mass of a styrene monomer and 0 to 20% by mass of a monomer other than the styrene monomer and a resin layer containing a polymer (II) that is obtained by emulsion polymerizing a monomer component B containing 70 to 100% by mass of a (meth)acrylic acid ester and 0 to 30% by mass of a monomer other than the (meth)acrylic acid ester; and the content of the styrene monomer in all monomer components used as starting materials for the emulsion particles is 10 to 55% by mass.

Abstract: A film-forming auxiliary suitable for use in a resin emulsion such as a fluororesin emulsion used as a raw material for a coating material or the like, the film-forming auxiliary containing emulsion particle, a polymer constituting the emulsion particle being obtained by emulsion polymerization of a monomer component in which the content ratio of a (meth)acrylate having a ring structure is 20-70% by mass, and the film-forming auxiliary being excellent in each of low-temperature film-forming property, warm water resistance, extensibility, weather resistance, vertical-surface coating property and warm water freezing stability.

Abstract: A resin emulsion for a coating material, which contains emulsion particles each having an inner layer and an outer layer, and wherein: each emulsion particle has a resin layer containing a polymer (I) that is obtained by emulsion polymerizing a monomer component A containing 80 to 100% by mass of a styrene monomer and 0 to 20% by mass of a monomer other than the styrene monomer and a resin layer containing a polymer (II) that is obtained by emulsion polymerizing a monomer component B containing 70 to 100% by mass of a (meth)acrylic acid ester and 0 to 30% by mass of a monomer other than the (meth)acrylic acid ester; and the content of the styrene monomer in all monomer components used as starting materials for the emulsion particles is 10 to 55% by mass.

Abstract: A film-forming auxiliary suitable for use in a resin emulsion such as a fluororesin emulsion used as a raw material for a coating material or the like, the film-forming auxiliary containing emulsion particle, a polymer constituting the emulsion particle being obtained by emulsion polymerization of a monomer component in which the content ratio of a (meth)acrylate having a ring structure is 20-70% by mass, and the film-forming auxiliary being excellent in each of low-temperature film-forming property, warm water resistance, extensibility, weather resistance, vertical-surface coating property and warm water freezing stability.

Abstract: Provision of a molding material excellent in molding accuracy without using a silicone resin and suitable for use in producing a molded body having high hardness and excellent appearance; a resin film formed from the molding material; a molded body obtained by using the molding material as a starting material; and a method for producing the molded body. A molding material used as a starting material in producing a molded body, containing a (meth)acrylic resin emulsion, a polyfunctional (meth)acrylic acid ester and a polymerization initiator; a resin film formed from the molding material; a molded body including a substrate and a molding material layer formed on the substrate wherein the molding material layer is formed from the molding material; and a method for producing the molded body.

Abstract: A resin composition for sealers as well as a resin composition for sealers and a paint composition for sealers that contains the resin composition for sealers are useful for sealers to be used with such inorganic building materials as ceramic-based building materials. The resin emulsion for sealers is a resin emulsion which contains emulsion particles having an inner layer and an outer layer. The inner layer is formed with a polymer which is formulated by means of emulsion polymerization of a monomer component containing styrene and a monomer other than the styrene, and the outer layer is formed with a polymer which is formulated by means of emulsion polymerization of a monomer component containing a carboxyl-group-containing monomer and a monomer other than the carboxyl-group-containing monomer.

Abstract: A resin composition for sealers as well as a resin composition for sealers and a paint composition for sealers that contains the resin composition for sealers are useful for sealers to be used with such inorganic building materials as ceramic-based building materials. The resin emulsion for sealers is a resin emulsion which contains emulsion particles having an inner layer and an outer layer. The inner layer is formed with a polymer which is formulated by means of emulsion polymerization of a monomer component containing styrene and a monomer other than the styrene, and the outer layer is formed with a polymer which is formulated by means of emulsion polymerization of a monomer component containing a carboxyl-group-containing monomer and a monomer other than the carboxyl-group-containing monomer.

Abstract: Embodiments of the invention provide a disk device capable of writing highly accurate servo data using an extremely simple technique, and a manufacturing method therefor. According to one embodiment, a method for manufacturing a disk device includes: mounting a magnetic disk and each assembly for driving the magnetic disk, such as an SPM and a VCM, in a base and attaching a top cover so as to seal the enclosure (made up of the base and the top cover) with each assembly of the HDD therein; replacing the air within the hard disk assembly (HDA) with a gas having a lower density than air, such as He; writing servo data to the magnetic disk in a self servo track write operation; and replacing the gas within the HDA with air.

Abstract: An object of the present invention is to provide an aqueous resin composition and its uses, wherein the aqueous resin composition combines the blocking resistance and the frost damage resistance and thereby can secure the durability over a long period of time even under circumstances where a severe temperature cycle is present. As a means of achieving this object, the aqueous resin composition according to the present invention is an aqueous resin composition comprising an acrylic resin emulsion and a crosslinking agent as essential components, with the aqueous resin composition being characterized in that, when a coating film is formed from the aqueous resin composition, the formed coating film exhibits an elongation ratio (E (%)) that satisfies a specific relational expression along with the glass transition temperature (TgT (° C.)) of the acrylic resin in the emulsion.

Abstract: Embodiments of the invention provide a disk device capable of writing highly accurate servo data using an extremely simple technique, and a manufacturing method therefor. According to one embodiment, a method for manufacturing a disk device includes: mounting a magnetic disk and each assembly for driving the magnetic disk, such as an SPM and a VCM, in a base and attaching a top cover so as to seal the enclosure (made up of the base and the top cover) with each assembly of the HDD therein; replacing the air within the hard disk assembly (HDA) with a gas having a lower density than air, such as He; writing servo data to the magnetic disk in a self servo track write operation; and replacing the gas within the HDA with air.

Abstract: An object of the present invention is to provide an aqueous resin composition and its uses, wherein the aqueous resin composition combines the blocking resistance and the frost damage resistance and thereby can secure the durability over a long period of time even under circumstances where a severe temperature cycle is present. As a means of achieving this object, the aqueous resin composition according to the present invention is an aqueous resin composition comprising an acrylic resin emulsion and a crosslinking agent as essential components, with the aqueous resin composition being characterized in that, when a coating film is formed from the aqueous resin composition, the formed coating film exhibits an elongation ratio (E (%)) that satisfies a specific relational expression along with the glass transition temperature (TgT (° C.)) of the acrylic resin in the emulsion.

Abstract: The present invention provides a resin composition comprising: a urethane resin and/or a resin as obtained by polymerizing a monomer component including an &agr;,&bgr;-unsaturated carboxylic acid as an essential component; and a multivalent metal compound; which resin composition is excellent in the one-liquid stability and also in the coating-film appearance, coating-film adhesion, water-rubbing resistance, warm-water-whitening resistance, and blocking resistance. The resin composition, according to the present invention, comprises: the urethane resin and/or the resin as obtained by polymerizing the monomer component including the &agr;,&bgr;-unsaturated carboxylic acid as an essential component; and the multivalent metal compound; with the resin composition being characterized by further comprising tartaric acid and/or its salt.

Abstract: A zoom lens mount assembly in which a zooming cam frame is moved along the optical axis while rotating therearound and respective movable frames supporting an optical system are driven by such rotation and movement of the cam frame to effect a desired zooming. In another aspect there is provided a focussing cam frame adapted to be moved along the optical axis and to drive a movable frame provided with a focussing optical system and a program lens shutter.