Encapsulating composition and organic electronic device comprising same

An encapsulating composition comprising a radical-curable compound having at least one or more radical-curable functional groups, and having composition polarizability,

• wherein the radical-curable compound comprises a monofunctional alicyclic compound (X1), a polyfunctional alicyclic compound (X2), a monofunctional aliphatic compound (Y1) and a polyfunctional aliphatic compound (Y2),
• wherein based on 100 parts by weight of the monofunctional alicyclic compound (X1), the polyfunctional alicyclic compound (X2) is included in an amount of 20 to 95 parts by weight, the monofunctional aliphatic compound (Y1) is included in an amount of 20 to 95 parts by weight, and the polyfunctional aliphatic compound (Y2) is included in an amount of 30 to 200 parts by weight,
• wherein the composition polarizability is the sum of values, each of the values obtained by multiplying each “compound polarizability of the radical-curable compound” constituting the encapsulating composition and “a weight ratio of the corresponding radical-curable compound to the encapsulating composition,” where the compound polarizability is calculated by the following General Equation 1, and
• the composition polarizability is 1.8 or less, and
• wherein the encapsulating composition has a dielectric constant of 2.8 or less at any one frequency of 110 to 250 kHz and a temperature of 25° C. after curing:
• Compound polarizability=(value obtained by combining the number of carbons and the number of oxygens included in a molecular structure of the corresponding radical-curable compound)/(value obtained by subtracting the number of oxygens from the number of carbons included in the molecular structure of the corresponding radical-curable compound). [General Equation 1]