Abstract: To provide a heat-resistant lubricity imparting coating agent that can form a heat-resistant lubricous protective layer with good heat resistance and lubricity which will hardly cause chips due to contact with the thermal head, and which will hardly allow the chips to stick to and be fusion-bonded to the head, and a thermal transfer recording medium having the heat-resistant lubricous protective layer. The heat-resistant lubricity imparting coating agent of the invention contains a polydimethylsiloxane copolymer which includes a long chain alkyl group having a carbon number of 12 or more.

Abstract: Provided are an active energy ray-curable urethane (meth)acrylate and an active energy ray-curable composition for paints and coating agents having abrasion resistance and lubricity, and uses thereof. The curable urethane (meth)acrylate has a long chain alkyl group having 13 to 25 carbon atoms and an active energy ray-curable functional group and is modified with polycaprolactone. The urethane (meth)acrylate is obtainable by reacting an organic isocyanate having three or more isocyanate groups in one molecule, a long chain alkyl alcohol, and a polycaprolactone-modified hydroxyethyl (meth)acrylate. On the other hand, the active energy ray-curable composition contains the urethane (meth)acrylate.

Abstract: Provided are an active energy ray-curable urethane (meth)acrylate and an active energy ray-curable composition for paints and coating agents having abrasion resistance and lubricity, and uses thereof. The curable urethane (meth)acrylate has a long chain alkyl group having 13 to 25 carbon atoms and an active energy ray-curable functional group and is modified with polycaprolactone. The urethane (meth)acrylate is obtainable by reacting an organic isocyanate having three or more isocyanate groups in one molecule, a long chain alkyl alcohol, and a polycaprolactone-modified hydroxyethyl (meth)acrylate. On the other hand, the active energy ray-curable composition contains the urethane (meth)acrylate.

Abstract: A thermal image transfer recording medium includes a substrate, a thermal image transfer ink layer provided on the substrate, and a heat resistant protective layer which is provided on the back side of the substrate, opposite to the thermal transfer ink layer with respect to the substrate, with which a thermal head comes into contact. The heat resistant protective layer is made of an organic polymeric material free from cross-linking structure, with a film strength of 10 mN or more, and the surface of the heat resistant protective layer has a contact angle with pure water of 95.degree. or more and a dynamic coefficient of friction of 0.07 or loss. The heat resistant protective layer may also be made of a modified copolymer containing (a) a main backbone chain polymer including an active-hydrogen-containing polymer which encompasses no cellulose compounds and (b) a side chain polymer which is a copolymer of a reactive silicone and a vinyl monomer.

Abstract: A thermal image transfer recording medium includes a substrate, a thermal image transfer ink layer provided on the substrate, and a heat resistant protective layer which is provided on the back side of the substrate, opposite to the thermal transfer ink layer with respect to the substrate, with which a thermal head comes into contact. The heat resistant protective layer is made of an organic polymeric material free from cross-linking structure, with a film strength of 10 mN or more, and the surface of the heat resistant protective layer has a contact angle with pure water of 95.degree. or more and a dynamic coefficient of friction of 0.07 or less. The heat resistant protective layer may also be made of a modified copolymer containing (a) a main backbone chain polymer including an active-hydrogen-containing polymer which encompasses no cellulose compounds and (b) a side chain polymer which is a copolymer of a reactive silicone and a vinyl monomer.

Abstract: A thermal image transfer recording medium is composed of a support, a thermal image transfer ink layer formed thereon, and a heat resistant protective layer which is composed of a cellulose-modified polymer with a backbone polymer thereof being cellulose and/or a cellulose derivative and a branch polymer thereof being a copolymer of a reactive silicone oil and a vinyl monomer, and which is formed on the back side of the support opposite to the thermal image transfer ink layer with respect to the support.