Provided are a polyhedral oligomeric silsesquioxane and a preparation method thereof, more particularly, a polyhedral oligomeric silsesquioxane itself which has a low refractive property and enables formation of a coating layer with excellent chemical and mechanical properties, and provides excellent adhesive strength for the surfaces of various substrates, and a preparation method thereof.

Provided is a shaped article including a hardcoat layer, where the hardcoat layer has surface hardness, flexibility, and heat resistance at high levels and offers excellent workability. The shaped article according to the present invention is a shaped article including a hardcoat layer, a substrate layer, and a thermoplastic resin layer and having a curved shape. The hardcoat layer defines an outermost surface of the shaped article. The hardcoat layer includes a cure product of a curable composition. The curable composition includes a cationically curable silicone resin and a leveling agent. The cationically curable silicone resin includes a silsesquioxane unit. The cationically curable silicone resin includes an epoxy-containing monomeric unit in a proportion of 50 mole percent or more of the totality of all monomeric units and has a number-average molecular weight of 1000 to 3000.

Provided is a hard coating film including a polyamideimide substrate layer and a hard coating layer, each of which has a predetermined refractive index, with a difference in the refractive index between those layers being 0.05. The substrate layer has a tensile modulus of 3 to 7 GPa, at a thickness of 80 m, as measured according to ASTM D111. The present invention relates to a hard coating film having improved mechanical and optical properties.

A scratch-resistant thermoplastic polymer composition (P) comprising 88 to 99.9 wt.-% of at least one styrene-based copolymer, 0.1 to 5 wt.-% of at least one modified organopolysiloxane compound, and optionally at least one colorant, dye or pigment, and/or at least one further additive, provides with improved properties.

Provided is a scratch self-repairing film including a hardcoat layer that has surface hardness, flexibility, and heat resistance at high levels and offers excellent workability. The scratch self-repairing film according to the present invention includes a substrate layer, a hardcoat layer on or over one side of the substrate layer, and a flexible resin layer on or over the other side of the substrate layer. The hardcoat layer includes a cured product of a curable composition. The curable composition includes a cationically curable silicone resin and a leveling agent. The cationically curable silicone resin includes a silsesquioxane unit. The cationically curable silicone resin includes an epoxy-containing monomeric unit in a proportion of 50 mole percent or more of the totality of all monomeric units and has a number-average molecular weight of 1000 to 3000.

The present invention provides a window film, a manufacturing method thereof, and a display device including the same. The window film comprises: a basic material layer; a window coating layer formed on one surface of the basic material layer; and a back coating layer formed on the other surface of the basic material layer, wherein the window film has a relation of formula 1.

Provided are: a composition for a window film, containing a siloxane resin including chemical formula 1 below and an iodonium ion-containing photo-cationic initiator; a flexible window film formed therefrom; and a flexible display device comprising the same. Chemical formula 1: (R.sup.1SiO.sub.3/2).sub.x(R.sup.2R.sup.3SiO.sub.2/2).sub.y.

Provided is a hard coating film in which a hard coating layer having a water contact angle of 90 or less, a conductive layer, and a low refractive index layer are laminated on a substrate, the film having excellent hardness, anti-curling property, antireflection performance, antifouling performance, and antistatic performance.

Provided is a hard coating film in which a hard coating layer having a water contact angle of 90 or less, a high refractive index layer, and a low refractive index layer are laminated on a substrate, the film having suppressed curling, and excellent hardness and antireflection performance.

A photocurable coating composition includes 50 to 150 parts by weight of a urethane acrylate oligomer having a number average molecular weight of 1300 to 1700 g/mol and 9 functional groups, 50 to 150 parts by weight of an acrylate monomer, 10 to 15 parts by weight of a photoinitiator, and 1 to 3 parts by weight of a surfactant.