Mitsui Petrochemical Industries, Ltd.

Kenji Yamane

Hajime Inagaki

Suguru Tokita

Masayoshi Kurisu

An active energy ray-curable composition comprising (A) an epoxy resin, (B) a compound selected from the group consisting of sulfonium salts and cyclopentadienyl iron compounds, (C) a compound selected from the group consisting of acrylates, methacrylates and oligomers thereof, and (D) an organic peroxide, and optionally (E) a rubber component. The composition is useful for an adhesive layer of an optical recording medium.

Active energy ray-curable composition and optical recording medium

An active energy ray-curable composition substantially comprising at least one of (meth)acrylates and oligomers thereof represented by the following general formula (I) ##STR1## wherein R represents a hydrogen atom or a methyl group,

Active energy ray-curable composition

An active energy ray-curable composition substantially comprising at least one of (meth)acrylates and oligomers thereof represented by the following general formula (I) ##STR1## wherein R represents a hydrogen atom or a methyl group, X represents an alkylene group in which at least one hydrogen atom may be replaced by a hydroxyl group, m is 0 or an integer of 1 to 4, Y represents a hydrocarbon group having a cyclic hydrocarbon moiety therein, and n is 1 or 2. The composition is useful as an adhesive, particularly as one in the production of optical discs.

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Ohtake, Japan

Kenji Yamane