The present invention relates to a photocurable composition which includes a cyanoacrylate component, a metallocene component, a photoinitiator and a plasticizer component, reaction products of which show among other things improved flexibility in terms of elongation at break.

The present invention relates to a photocurable composition which includes a cyanoacrylate component, a metallocene component, a photoinitiator and a plasticizer component, reaction products of which show among other things improved flexibility in terms of elongation at break.

A display device includes a protective film that includes an adhesive layer. The adhesive layer has a first adhesive strength at a room temperature and has a second adhesive strength equal to or smaller than about 25% of the first adhesive strength in a second state in which a heat or ultraviolet ray is provided.

A display device includes a protective film that includes an adhesive layer. The adhesive layer has a first adhesive strength at a room temperature and has a second adhesive strength equal to or smaller than about 25% of the first adhesive strength in a second state in which a heat or ultraviolet ray is provided.

An adhesive film, an optical member including the same, and an optical display apparatus including the same are provided. An adhesive film is formed of an adhesive composition including a (meth)acrylic copolymer, a curing agent, an aromatic group-containing mono- or higher functional monomer, and an initiator, and has a peel strength increase rate of 5.0 or more, as calculated according to Equation 1 herein.

An adhesive film, an optical member including the same, and an optical display apparatus including the same are provided. An adhesive film is formed of an adhesive composition including a (meth)acrylic copolymer, a curing agent, an aromatic group-containing mono- or higher functional monomer, and an initiator, and has a peel strength increase rate of 5.0 or more, as calculated according to Equation 1 herein.

The present invention provides a cyanic acid ester compound having a structure represented by the following general formula (1):

##STR00001##

wherein n represents an integer of 1 or larger.

The present invention is intended to provide an adhesive composition for temporarily fixing which exhibits high adhesive strength and peeling property in water, and which is applicable to members having opaque area, and still which leaves no adhesive deposit on released members, so that it realize the excellent workability and environment. The present invention is a two-component composition for temporarily fixing members, comprising (A) a polyfunctional (meth)acrylate, (B) a mono-functional (meth)acrylate, (C) an organic peroxide, (D) a decomposition accelerator, (E) a polymerization initiator and (G) particulate matter, and composed of two-component system of a first agent and a second agent, said first agent containing at least said component (C) and said second agent containing at least said component (D), wherein cured body of said composition being used to bond members is brought into contact with water to be decomposed and release said members.

The invention relates to a wash-off label structure and an adhesive layer comprising a pressure sensitive hot melt adhesive layer sensitive to the washing conditions. According to an embodiment the adhesive layer comprises an acrylate composition curable with ultraviolet radiation and at least one modifier selected from a tackifier, a plasticizer and a filler, and wherein the peel adhesion from the labelled surface at 50-80° C. in alkaline aqueous solution of at least 30% less than the peel adhesion at room temperature of 23° C.±2° C. and relative humidity of 50%±5%. The invention further relates to a use of the label for recyclable or reusable packages, and a combination of a package and a wash-off label.

The invention relates to a wash-off label structure and an adhesive layer comprising a pressure sensitive hot melt adhesive layer sensitive to the washing conditions. According to an embodiment the adhesive layer comprises an acrylate composition curable with ultraviolet radiation and at least one modifier selected from a tackifier, a plasticizer and a filler, and wherein the peel adhesion from the labelled surface at 50-80° C. in alkaline aqueous solution of at least 30% less than the peel adhesion at room temperature of 23° C.±2° C. and relative humidity of 50%±5%. The invention further relates to a use of the label for recyclable or reusable packages, and a combination of a package and a wash-off label.