Composition for adhesive layer, method for producing layered product, and method for processing layered product

Abstract

This invention provides an adhesive layer forming composition that exhibits excellent decomposability based on light irradiation during adhesive layer formation and reduces residue during decomposition, as well as a method for manufacturing a laminate containing the adhesive layer forming composition and a method for processing the laminate. An adhesive layer forming composition is provided in which light is irradiated from the support side in a laminate comprising an adhesive layer between a light-transmitting support and an adherend, thereby enabling separation of the support and the adherend from the laminate. The adhesive layer forming composition comprises: (A) a polymeric resin containing unsaturated groups; and (E) a solvent. The absorbance of the cured film obtained under specified conditions at a wavelength of 266 nm is 0.50 or more. The weight reduction rate of component (A) obtained under specified conditions is 50% by mass or more.

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