The present invention relates to a flexible, pressure-sensitively adhesive sheetlike structure for improved structural bonding, more particularly for clearance compensation, of diverse materials, such as metal, wood, glass and/or plastic, for example.

The present application relates to a curable composition. The curable composition of the present application exhibits excellent adhesion ability and liquid crystal orientation ability simultaneously before or after curing, so that it can be effectively applied to various optical uses.

The invention relates to a method for the production of a laminated core comprising a stack of metallic plates, in which: —a metallic sheet (2, 3) is chosen, having a first main face (4, 8) and a second main face (6, 9) which are coated with a sub-layer comprising at least one material selected from epoxides and polyepoxides, —a layer (12, 20) with a thickness of less than 500 μm of a precursor composition selected from partly epoxides and at least partly cross-linked polyepoxides is placed in contact with said sub-layer, —a layer (16, 22) with a thickness of less than 500 μm of a curing composition comprising at least one crosslinking agent is placed in contact with said sub-layer, —said metallic sheet is punched, —the metallic plates are then superposed to each other.

Embodiments of this invention are directed to bio-based epoxy compositions, and method of their preparation and use. Other embodiments are directed to cured bio-based epoxies, and manufactured articles having bio-based epoxy coatings, adhesives, or composites.

Disclosed herein are compositions including (a) a first component comprising (1) an epoxy-adduct that is the reaction product of reactants comprising a first epoxy compound, a polyol, and an anhydride and/or a diacid and (2) a second epoxy compound; (b) rubber particles having a core/shell structure and/or graphenic carbon particles; and (c) a second component that chemically reacts with the first component at ambient or slightly thermal conditions. Also disclosed herein are compositions including (a) an epoxy-capped flexibilizer; (b) a heat-activated latent curing agent; and optionally (c) rubber particles having a core/shell structure and/or graphenic carbon particles; (d) an epoxy/CTBN adduct; and/or (e) an epoxy/dimer acid adduct. The heat-activated latent curing agent may include at least one reaction product of reactants including an epoxy compound and an amine and/or an alkaloid.

A device comprising an adhesive material and a fiberglass mesh located in direct planar contact with the adhesive material. The adhesive material is tacky in its green state and includes an epoxy, an epoxidized cashew nut shell oil, and at least about 20% by weight of a component containing a core shell polymer material to improve the adhesion capability to surfaces that are contaminated and/or exposed to high pressure spraying or chemical treatments, heat and humidity.

Provided is a waterproof cover having a waterproof membrane, and a PSA sheet laminated peripherally to the waterproof membrane. The PSA sheet comprises a PSA layer bonded to the waterproof membrane. The PSA layer is formed of a PSA having a storage modulus G′ of 53000 Pa or higher at 40° C.

Provided is a waterproof cover having a waterproof membrane, and a PSA sheet laminated peripherally to the waterproof membrane. The PSA sheet comprises a PSA layer bonded to the waterproof membrane. The PSA layer is formed of a PSA having a storage modulus G′ of 53000 Pa or higher at 40° C.

An adhesive agent that is favorable in terms of peeling form, adhesive strength, and viscosity is provided. The adhesive agent contains an epoxy resin (A), fine polymer particles (B), and a non-crosslinked acrylic resin (C). With respect to 100 parts by mass of the epoxy resin (A), 1 part by mass to 100 parts by mass of fine polymer particles (B) and 1 part by mass to 100 parts by mass of a non-crosslinked acrylic resin (C) are contained in the adhesive agent. The fine polymer particles (B) contain a rubber-containing graft copolymer that includes (i) an elastic body containing a specific material and (ii) a graft part containing a specific material.

Provided is a curable composition containing a reactive mixture of components including an polyethersulfone having a chemical group reactive with an epoxide, a cycloaliphatic polyepoxide resin, a polyepoxide having a functionality greater than two, a liquid diepoxide resin, a first curative containing 9,9-bis(aminophenyl)fluorene or a derivative therefrom and having a curing onset temperature of from 150° C. to 200° C. The components can further comprise a second curative having a curing onset temperature of from 60° C. to 180° C. When thermally curing this composition, the second epoxy curative starts to cure before the first epoxy curative, thereby inhibiting vertical flow of the adhesive during the curing process.