An ultraviolet ray-curable silicone adhesive agent composition comprising



(A) a polysiloxane represented by formula (1):

(R1SiO3/2)a1(R13SiO1/2)b1(X1O1/2)c1

(wherein R1 represents a monovalent hydrocarbon group wherein a methyl group accounts for 20 mol % or more and an alkenyl group accounts for 0.1 to 50 mol %; X1 represents a hydrogen atom or the like; a1 represents 0.1 to 1; b1 represents 0 to 0.75; and c1 represents 0 to 0.1; and the requirement represented by the formula: a1+b1+c1=1 is satisfied),

(B) a polysiloxane represented by formula (2):

(R23SiO1/2)a2(R22SiO)b2

(wherein R2 represents a monovalent hydrocarbon group wherein a methyl group accounts for 20 mol % or more and an alkenyl group accounts for 0.01 to 25 mol %; a2 represents 0.001 to 0.67; b2 represents 0.33 to 0.999; and the requirement represented by the formula: a2+b2=1 is satisfied),

(C) a hydrogen polysiloxane represented by formula (3):

R3dHeSiO[(4-d-e)/2]

(wherein R3 represents a monovalent hydrocarbon group; and d and e represent numerical values satisfying the requirements represented by the formulae: 0.7≤d≤2.5, 0.01≤e≤1.0 and 0.8≤d+e≤2.7) and

(D) a platinum-group catalyst capable of being activated with light having a wavelength of 200 to 500 nm.




The ultraviolet ray-curable silicone adhesive agent composition can provide a cured article having excellent adhesion force to an object of interest even when being cured under room temperature.