The present invention provides alternative polyurethane composition comprising the reaction product of an azidated polyol and a poly(alkynyl carbamate) prepolymer, wherein the poly(alkynyl carbamate) prepolymer comprises the reaction product of a polyisocyanate, an alkynol, and an oxysilane. The reaction of the polyol and the prepolymer may occur in the presence of a catalyst or at a temperature of from 20° C. to 120° C. The inventive oxysilane and azido-alkyne hybrid click formulations provide comparable performance, and in some cases better performance, to/than urethane and azido-alkyne control click formulations in terms of pencil hardness, MEK double rubs, and glass transition temperature. The inventive alternative polyurethane compositions may be used to provide coatings, adhesives, sealants, films, elastomers, castings, and composites.

The present invention provides alternative polyurethane composition comprising the reaction product of an azidated polyol and a poly(alkynyl carbamate) prepolymer, wherein the poly(alkynyl carbamate) prepolymer comprises the reaction product of a polyisocyanate, an alkynol, and an oxysilane. The reaction of the polyol and the prepolymer may occur in the presence of a catalyst or at a temperature of from 20° C. to 120° C. The inventive oxysilane and azido-alkyne hybrid click formulations provide comparable performance, and in some cases better performance, to/than urethane and azido-alkyne control click formulations in terms of pencil hardness, MEK double rubs, and glass transition temperature. The inventive alternative polyurethane compositions may be used to provide coatings, adhesives, sealants, films, elastomers, castings, and composites.

Provided is a readily adhesive polyester film that has antistatic properties-and prevents an antistatic agent from transferring to other items The readily adhesive polyester film includes a polyester film and a readily adhesive layer on at least one surface of the polyester film, wherein the readily adhesive layer is formed of a cured composition containing an ion-conducting antistatic agent, a polyester resin, and a polycarbonate urethane resin, a surface of the readily adhesive layer has a surface specific resistance value of 1.0×10.sup.13 Ω/sq or lower, and after the surface of the readily adhesive layer is brought into contact with an additional polyester film and maintained at a temperature of 50° C. under a pressure of 1 kg/cm.sup.2 for 3 days, the surface of the additional polyester film that is in contact with the surface of the readily adhesive layer has a surface specific resistance value of 1.0×10.sup.14 Ω/sq or higher.

Provided is a readily adhesive polyester film that has antistatic properties-and prevents an antistatic agent from transferring to other items The readily adhesive polyester film includes a polyester film and a readily adhesive layer on at least one surface of the polyester film, wherein the readily adhesive layer is formed of a cured composition containing an ion-conducting antistatic agent, a polyester resin, and a polycarbonate urethane resin, a surface of the readily adhesive layer has a surface specific resistance value of 1.0×10.sup.13 Ω/sq or lower, and after the surface of the readily adhesive layer is brought into contact with an additional polyester film and maintained at a temperature of 50° C. under a pressure of 1 kg/cm.sup.2 for 3 days, the surface of the additional polyester film that is in contact with the surface of the readily adhesive layer has a surface specific resistance value of 1.0×10.sup.14 Ω/sq or higher.

A method of producing a molded article includes: laminating an adhesive sheet including an acrylic-based polymer and a polymerization initiator onto resin film, to produce a resin laminate; and covering an adherend with the resin film while the resin laminate is pressed against the adherend, and the resin film is stretched following a surface shape of the adherend. In planar view, the resin laminate is larger than the adherend. The covering step includes heating the resin laminate at 100° C. or higher and 180° C. or lower, superposing the resin laminate on the adherend planarly and pressing the resin laminate and the adherend under a reduced pressure environment, and then applying pressure to an environment opposite to the adherend with respect to the resin film. The adhesive sheet has an exothermic peak of 100° C. or higher and 180° C. or lower in differential scanning calorimetry at a temperature raising rate of 10° C./min.

A method of producing a molded article includes: laminating an adhesive sheet including an acrylic-based polymer and a polymerization initiator onto resin film, to produce a resin laminate; and covering an adherend with the resin film while the resin laminate is pressed against the adherend, and the resin film is stretched following a surface shape of the adherend. In planar view, the resin laminate is larger than the adherend. The covering step includes heating the resin laminate at 100° C. or higher and 180° C. or lower, superposing the resin laminate on the adherend planarly and pressing the resin laminate and the adherend under a reduced pressure environment, and then applying pressure to an environment opposite to the adherend with respect to the resin film. The adhesive sheet has an exothermic peak of 100° C. or higher and 180° C. or lower in differential scanning calorimetry at a temperature raising rate of 10° C./min.

The present invention relates to an optical laminate and a flexible display panel including the same, and more particularly, to an optical laminate including a self-restoration barrier adhesive layer and a flexible display panel including the same.

A two-component polyurethane composition containing at least 55% by weight of polybutadiene polyols based on the total amount of all polyols having an average molecular weight of at least 500 g/mol, and at least one latent hardener, where the ratio of the number of reactive groups in the latent hardener to the number of OH groups present is in the range from 0.02 to 0.4. The composition has a long open time, blister-free curing, a very low glass transition temperature, high elasticity and surprisingly high strength which is very constant over a wide temperature range. Furthermore, it has very good adhesion to metallic and nonmetallic substrates, causing barely any stress cracks on glassy thermoplastics.

A two-component polyurethane composition containing at least 55% by weight of polybutadiene polyols based on the total amount of all polyols having an average molecular weight of at least 500 g/mol, and at least one latent hardener, where the ratio of the number of reactive groups in the latent hardener to the number of OH groups present is in the range from 0.02 to 0.4. The composition has a long open time, blister-free curing, a very low glass transition temperature, high elasticity and surprisingly high strength which is very constant over a wide temperature range. Furthermore, it has very good adhesion to metallic and nonmetallic substrates, causing barely any stress cracks on glassy thermoplastics.

The invention relates to an artificial nail tip having a plurality of smile line guidelines embedded on the surface of the artificial nail tip, which allows a user or a nail professional to easily create smile lines of varying depths on the artificial nail tip.