A curable composition which provides a coating layer having high adhesion to a substrate and a hard coat layer and extremely excellent photochromic properties such as high color development intensity, high fading speed and excellent durability. This composition comprises (1) 100 parts by weight of radically polymerizable monomers including a silyl monomer such as -methacryloyloxypropyl trimethoxysilane and/or an isocyanate monomer such as 2-isocyanatoethoxy methacrylate, (2) 0.01 to 20 parts by weight of an amine compound and (3) 0.01 to 20 parts by weight of a photochromic compound. A photochromic optical material having excellent adhesion between a photochromic coating layer and a resin substrate and obtained by using this composition as a coating material and a process for producing the photochromic optical material.

The present invention provides a stretchable film including: a cured product of a composition which contains (A) a poly(meth)acrylate compound having a polymerizable double bond and a siloxane bond, (B) a (meth)acrylate compound having a urethane bond, and (C) an organic solvent having a boiling point in the range of 115 to 200 C. at atmospheric pressure; wherein the component (A) is localized in the direction of the surface of the film. The stretchable film of the present invention is excellent in stretchability and strength as well as repellency on the film surface.

Polymers are described having repeat units of Formula (I): ##STR00001##
wherein R.sup.3 is H or alkyl group; x and t are positive integers; Q is C(O)O, C(O)NH, or direct bond; D is alkylene, arylene, or (CH.sub.2CH.sub.2O).sub.n(CH(CH.sub.3)CH.sub.2O).sub.m; E is O, S, NR.sup.5, or direct bond; R.sup.5 is H or alkyl; G is the residue of a polyisocyanate; V is a urethane, urea, or thiourea that bonds to other parts of the polymer compound or to a monovalent blocking group; s is 1 to 5; Y is O or a substituted or unsubstituted arylene group; A is an alkylene group; w, v, and y are 0 or 1; X is the residue of a cyclic or acyclic sugar alcohol which is substituted with R.sup.1, C(O)R.sup.1, (CH.sub.2CH.sub.2O).sub.n(CH(CH.sub.3)CH.sub.2O).sub.mR.sup.2, (CH.sub.2CH.sub.2O).sub.n(CH(CH.sub.3)CH.sub.2O).sub.mC(O)R.sup.1, or mixtures thereof; n and m are independently 0 to 20; R.sup.1 is independently an alkyl group; and R.sup.2 is independently H or alkyl group.

The present invention provides a thermally conductive adhesive sheet that can be easily laminated on an electronic device without an adhesive layer therebetween and can further selectively dissipate heat in a particular direction to provide a sufficient temperature difference to the inside of the electronic device, a method for producing the same, and an electronic device using the same. The present invention includes a thermally conductive adhesive sheet comprising a high thermally conductive portion and a low thermally conductive portion, wherein the high thermally conductive portion and the low thermally conductive portion have adhesiveness, and the high thermally conductive portion and the low thermally conductive portion each independently constitute an entire thickness of the thermally conductive adhesive sheet, or at least either the high thermally conductive portion or the low thermally conductive portion constitutes a portion of a thickness of the thermally conductive adhesive sheet, and a method for producing the thermally conductive adhesive sheet, and an electronic device using the thermally conductive adhesive sheet.

Non-silicone urea-based adhesives are disclosed which are prepared by the polymerization of reactive oligomers with the general formula XBX, where X is an ethylenically unsaturated group and B is a unit free of silicone and containing urea groups. The reactive oligomers can be prepared from polyamines through chain extension reactions using diaryl carbonates followed by capping reactions. Adhesive articles, including optical adhesive articles may be prepared using the disclosed non-silicone urea-based adhesives.

A curable resin composition for producing a three-dimensional object formed of a cured resin product comprises a polyfunctional urethane (meth)acrylate having a weight-average molecular weight of 1,000 or more and 60,000 or less; a monofunctional radically polymerizable compound having one radically polymerizable functional group in a molecule; a polyfunctional radically polymerizable compound other than the polyfunctional urethane (meth)acrylate; rubber particles; and a radical polymerization initiator. The monofunctional radically polymerizable compound includes a monofunctional acrylamide-based compound, and the content of the polyfunctional radically polymerizable compound other than polyfunctional urethane (meth)acrylate (particularly one having a radically polymerizable functional group equivalent of less than 300 g/eq) is controlled.

The present invention provides an adhesive composition for optical use, including a polyester-based urethane acrylate oligomer, an acrylate-based monomer, a photoinitiator, and a Anti-hydrolysis agnet, and an optical device equipped with an adhesive layer including photocured products of the adhesive composition for optical use.

The present invention provides an adhesive composition for optical use, including a polyester-based urethane acrylate oligomer, an acrylate-based monomer, a photoinitiator, and a Anti-hydrolysis agnet, and an optical device equipped with an adhesive layer including photocured products of the adhesive composition for optical use.

A laminated film appropriate as a PPF material which has a three-layer structure in which a top coating layer including a urethane acrylate cured product, a substrate layer including polycarbonate thermoplastic polyurethane, and an adhesive layer including a pressure sensitive adhesive are in contact in that order. Preferably, the top coating layer includes a unit derived from -methacryloxypropylhepta(trifluoropropyl)-T8-silsesquioxane.

Provided is a coating agent that can be formed into a surface layer having excellent self-restoring properties and stain-proof properties by applying the coating agent onto a surface of a base material (for example, thermoplastic polyurethane) and curing the resulting material. The coating agent according to the present application contains urethane (meth)acrylate-based resin (a), fluorine-based compound (b) and photopolymerization initiator (d). Urethane (meth)acrylate-based resin (a) has weight average molecular weight (Mw) of 10,000 to 800,000. Fluorine-based compound (b) has at least two polymerizable functional groups. The surface layer formed of the coating agent has excellent self-restoring properties of a scratch, stain-proof properties and stretchability.