| abstract |
PROBLEM TO BE SOLVED: To provide an ultraviolet curable pressure-sensitive adhesive composition for a protective film, a cured product and a protective sheet which, when cured, give a cured product having excellent low adhesive strength and self-adsorption property and less generation of chips. SOLUTION: A specific polyurethane (A) which is a reaction product of a polyol (a1), a polyisocyanate (a2), a hydroxyl group-containing (meth) acrylate (a3) and a hydroxyl group-containing photopolymerization initiator (a4), and an alkyl group. A protective film containing an alkyl mono (meth) acrylate (B) having 6 to 18 carbon atoms, a polyfunctional (meth) acrylate (C), and a plastic agent (D), in which the component (A) satisfies a specific condition. UV curable adhesive composition for. [Selection diagram] None |