| 摘要 |
PURPOSE:To provide the titled substance composed of a multi-component copolymer obtained by the addition reaction of a specific amount of acrylic acid, etc. to a copolymer of a specific alkyl acrylate, etc. and a vinyl monomer having aziridine group, and exhibiting high adhesive force and cohesive force by the irradiation of ionizing radiation at a low dose. CONSTITUTION:The objective substance is composed of (A) a multi-component copolymer obtained by (1) copolymerizing (i) 100 moles of an alkyl (meth)acrylate of formula I (R<1> is H or methyl; R<2> is 2-14C alkyl) and (ii) 1-30 moles of a vinyl monomer containing aziridine group and represented by formula II or III, and (2) adding 0.5-2 moles of (meth)acrylic acid of formula IV (R<3> is H or methyl) based on 1 mole of the component (ii) to the above copolymer; or a mixture of the component A and (B) an acrylic acid ester [e.g. acrylic acid ester of formula V (R<4> is 2-14C alkyl)]; or a composition composed mainly of the component A; or a composition composed mainly of a mixture of the components A and B. EFFECT:The substance can be applied in a solvent-less state.
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