An adhesive composition includes 0.1 to 1 part by weight of nano panicles, 50 to 95 parts by weight of acrylate resin, and 5 to 50 parts by weight of a monomer or oligomer of acrylate or acrylic acid containing multi-functional groups, and the acrylate resin and the monomer or oligomer of acrylate or acrylic acid containing multi-functional groups have a total weight of 100 parts by weight, in which the acrylate resin has a weight average molecular weight of 100,000 to 1,500,000. The nano particle has a shell covering parts of the surface of the core, and acrylate groups grafted to the surface of the core.

Hot melt processable composition mixtures include an acid-functional (meth)acrylate-based adhesive composition and a zinc di-(meth)acrylate salt. The adhesive composition has a hot melt processing temperature, and the zinc salt has a melting point that is higher than the hot melt processing temperature of the adhesive composition. The mixture is hot melt processable, and upon application to a substrate, the mixture forms an ionically crosslinked layer with thermally reversable ionic crosslinks.

The present invention relates to an adhesive resin composition including a styrene-ethylene-butylene-styrene copolymer with a specific chemical structure, an epoxy resin, an acid anhydride compound, and a curing catalyst, an adhesive film obtained from the resin composition, and a flexible metal laminate including the adhesive film.

There is provided an aqueous emulsion derived from a blend comprising an acrylic polymer, wherein the pH of the dispersion medium is less than 7.0, and a water-in-oil emulsion containing a nonionic water-soluble polymer, which aqueous emulsion has viscosity of 1,000 to 15,000 mPa s at 25° C. There are also provided adhesive compositions made using the aqueous emulsion and methods for manufacturing the aqueous emulsion.

An adhesive composition for a pre-applied underfill sealant comprising: (a) a radical polymerizable monomer having one or more functional groups selected from the group consisting of vinyl group, maleimide group, acryloyl group, methacryloyl group and allyl group, (b) a polymer having a polar group, (c) a filler, and (d) a thermal radical initiator.

A method for producing a liquid dispersion of composite resin particles includes polymerizing a styrene compound and an extra vinyl monomer together to give a styrene resin; polymerizing a (meth)acrylate compound in the presence of the styrene resin to give intermediate resin particles A, which are resin particles containing the styrene resin and a (meth)acrylate resin; polymerizing a styrene compound and an extra vinyl monomer in the presence of intermediate resin particles A to give liquid dispersion B, which is a liquid dispersion containing intermediate resin particles B; and adding a polymerization initiator to liquid dispersion B to give a liquid dispersion containing composite resin particles. In the composite resin particles as a whole, the ratio by mass between the styrene and (meth)acrylate resins is between 80:20 and 20:80. There is a difference of 30° C. or more between the lowest and highest glass transition temperatures of the composite resin particles.

A method for producing a composite resin particle dispersion includes: performing polymerization A by polymerizing a styrene compound and a vinyl monomer other than the styrene compound to form a styrene-based resin; performing polymerization B by polymerizing a (meth)acrylic acid ester compound in the presence of the styrene-based resin to form intermediate resin particles containing the styrene-based resin and a (meth)acrylic acid ester-based resin; and performing polymerization C by polymerizing a styrene compound and a vinyl monomer other than the styrene compound in the presence of the intermediate resin particles to form composite resin particles. The mass ratio of the styrene-based resin to the (meth)acrylic acid ester-based resin in the composite resin particles is from 80:20 to 20:80. A difference between the lowest glass transition temperature and the highest glass transition temperature in the composite resin particles is 30° C. or more.

A method for producing a composite resin particle dispersion includes: polymerizing a (meth)acrylic acid ester compound to form a (meth)acrylic acid ester-based resin; and polymerizing a styrene compound and a vinyl monomer other than the styrene compound in the presence of the (meth)acrylic acid ester-based resin to form composite resin particles containing a styrene-based resin and the (meth)acrylic acid ester-based resin. The mass ratio of the styrene-based resin to the (meth)acrylic acid ester-based resin in the composite resin particles is from 80:20 to 20:80. A difference between the lowest glass transition temperature and the highest glass transition temperature in the composite resin particles is 30° C. or more.

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, a mono- or higher functional monomer, a binder having a melting point of about 30° C. to about 60° C., and an initiator, and has a peel strength increase rate of 7.0 or more, as calculated according to Equation 1 herein.

A mixture having (A) a polymer obtain by polymerizing at least one free-radically polymerizable compound; and (B) at least one compound having at least one ethylenically unsaturated, free-radically polymerizable group and having a weight-average molecular weight Mw of less than 5000 g/mol, wherein at least 10% by weight of compounds (B) are one or more compounds B1 with at least one nonaromatic ring system.