The invention provides a composition for forming an easy-to-detach thin resin film, the composition being characterized by including a urethane (meth)acrylate compound, and a first polymerizable composition containing an ethylenic unsaturated monomer having a tert-butoxy group and a radical polymerization initiator, or a polymer of a second polymerizable composition containing the ethylenic unsaturated monomer having a tert-butoxy group, wherein the amount of the ethylenic unsaturated monomer having a tert-butoxy group is 5 mass % or more and less than 95 mass % with respect to the sum of the amount of the urethane (meth)acrylate compound and the total amount of the monomer(s) contained in the first polymerizable composition or the second polymerizable composition.

The present invention relates to an aqueous emulsion including an ethylenically unsaturated monomer unit-containing polymer as a dispersoid and a polyvinyl alcohol as a dispersant. The content of a free polyvinyl alcohol in the aqueous emulsion is 0.2 to 20 parts by mass relative to 100 parts by mass of the ethylenically unsaturated monomer unit-containing polymer. The free polyvinyl alcohol has a degree of saponification of 80.0 to 99.5 mol % and a viscosity-average degree of polymerization of 200 to 5000, and the free polyvinyl alcohol has a symmetry factor (W.sub.0.05h/2f) that satisfies the following expression (1) as determined by gradient high-performance liquid chromatography for reversed-phase separation using a water-acetone eluent according to JIS K 0124 (2011).

0.85≦W.sub.0.05h/2f≦1.30  (1)

(The definitions of the symbols are omitted.)

The present invention relates to an aqueous emulsion including an ethylenically unsaturated monomer unit-containing polymer as a dispersoid and a polyvinyl alcohol as a dispersant. The content of a free polyvinyl alcohol in the aqueous emulsion is 0.2 to 20 parts by mass relative to 100 parts by mass of the ethylenically unsaturated monomer unit-containing polymer. The free polyvinyl alcohol has a degree of saponification of 80.0 to 99.5 mol % and a viscosity-average degree of polymerization of 200 to 5000, and the free polyvinyl alcohol has a symmetry factor (W.sub.0.05h/2f) that satisfies the following expression (1) as determined by gradient high-performance liquid chromatography for reversed-phase separation using a water-acetone eluent according to JIS K 0124 (2011).

0.85≦W.sub.0.05h/2f≦1.30  (1)

(The definitions of the symbols are omitted.)

A random copolymer compound of (A) a polyphenylene ether resin having phenolic hydroxy groups at both ends, (B) an aliphatic polymer having alcoholic hydroxy groups at both ends, and (C) an acid dichloride compound that is a binder is disclosed, wherein the number of mol a of the (A) polyphenylene ether resin, the number of mol b of the (B) aliphatic polymer, and the number of mol c of the (C) acid dichloride compound that is a binder satisfies the relationship (a+b)>c.

An object of the present invention is to provide a surface modifier composition that is capable of performing surface modification of various types of hardly adhesive materials, and of improving adhesion with respect to various types of hardly adhesive materials, and an adhesion method using the same. The present invention relates to a surface modifier composition, containing: an (A) component: a hydrogen abstraction type radical initiator; a (B) component: a silane compound having a hydrolyzable silyl group, and one or more functional groups which are at least one type of functional group selected from the group consisting of radical polymerizable functional groups and mercapto groups; and a (C) component: at least one compound selected from the group consisting of a (C1) specific silane compound and a (C2) condensation reaction catalyst, in which the surface modifier composition is used in surface modification of an adherend containing a resin having a hydrocarbon bond.

Provided is a solid-state battery in which single cell bodies as a solid-state thin film battery are more suitably stacked. In the solid-state battery technology, an adhesive layer is provided between a plurality of stacked single cell bodies and the adhesive layer is configured to cover each cell element portion.

Provided is a solid-state battery in which single cell bodies as a solid-state thin film battery are more suitably stacked. In the solid-state battery technology, an adhesive layer is provided between a plurality of stacked single cell bodies and the adhesive layer is configured to cover each cell element portion.

An adhesive composition which contains a vinyl polymer and an acrylic adhesive polymer, and wherein: the vinyl polymer has a glass transition temperature (Tg) of from 60° C. to 200° C. (inclusive) and a number-average molecular weight of from 500 to 10,000; and the vinyl polymer is contained in an amount of from 0.5 part by mass to 60 parts by mass per 100 parts by mass of the acrylic adhesive polymer. If this adhesive composition is applied to a separator and then dried, thereby obtaining an adhesive layer, a first Tg that is the glass transition temperature of the entire adhesive layer is from −80° C. to 10° C., and a second Tg that is the glass transition temperature calculated from a surface layer portion of the adhesive layer as determined by X-ray photoelectron spectroscopy is 40° C. or higher, and is higher than the first Tg by 30° C. or more.

The invention features a moisture sensitive hot melt composition in individual forms, the individual forms including a core of moisture sensitive hot melt composition, and an outer shell comprising a thermoplastic polymer, wherein the individual forms include a sealed zone of the outer shell material, extending outward from the body of the individual forms, on at least two opposing sides of the individual forms.

The invention features a moisture sensitive hot melt composition in individual forms, the individual forms including a core of moisture sensitive hot melt composition, and an outer shell comprising a thermoplastic polymer, wherein the individual forms include a sealed zone of the outer shell material, extending outward from the body of the individual forms, on at least two opposing sides of the individual forms.