64results about How to "Excellent bonding durability" patented technology

Disclosed is a curable composition which is chemically polymerizable, which can achieve extremely high adhesion strength even when not being irradiated with light, and which is intended to be used in the dental field. Specifically disclosed is a curable composition for dental applications, which comprises (A) a polymerizable monomeric component comprising an acidic monomer, (B) water, and (C) a chemical polymerization initiator component comprising a radical-generating species and a reactive species capable of generating a radical upon being reacted with the radical-generating species. The curable composition is stored in the form divided into two or more packages. The polymerization / curing of the curable composition can be achieved by mixing the components packed in the packages with each other. One package (I) among the packages includes the components (A) and (B), and contains a polyvalent metal ion in an mount of 0.3 to 10 meq relative to 1 gram of the polymerizable monomeric component (A) included in the package (I). The chemical polymerization initiator (C) is stored in the form divided into at least two packages so as to prevent the contact between the radical-producing species and the reactive species.

Disclosed is a solar-cell backsheet, the constituent members of which adhere to each other well. Furthermore, said solar-cell backsheet is inexpensive to manufacture, highly weather-resistant, and has excellent water-vapor barrier performance. The disclosed solar-cell backsheet has a layered structure comprising at least three layers. The first layer is a weather-resistant polyester resin film or fluorine resin film. The second layer is a polyolefin layer that is between 5 and 250 [mu]m thick and comprises a modified polyolefin resin obtained by grafting 1 to 30 weight parts of an epoxy-group-containing vinyl monomer and 0.1 to 30 weight parts of an aromatic vinyl monomer onto 100 weight parts of a polyethylene, a polypropylene, or an ethylene-propylene copolymer. The third layer is a polyester layer, a polyolefin layer, or aluminum foil. The combined thickness of the second and third layers is at least 30 [mu]m.

The invention pertains to an aqueous emulsion containing a polymer as a dispersoid and PVA as a dispersant, the polymer containing ethylenically unsaturated monomer units; wherein, the free PVA content of the aqueous emulsion is 0.2-20 parts by mass per 100 parts by mass of the polymer containing ethylenically unsaturated monomer units, the degree of saponification of the free PVA is 80.0-99.5% molar, the viscosity-average degree of polymerization is 200-5000, and the free PVA has a symmetry factor (W0.05 h / 2f), based on JIS K0124 (2011) that satisfies formula (1), said factor measured by reversed-phase distribution gradient high-speed liquid chromatography using a water-acetone eluent. 0.85<=W0.05h / 2f<=1.30 (1) (the meanings of the symbols are omitted.)