Natoco Co., Ltd.

Tomihisa Ohno

Masahiro Hara

Susumu Kawakami

Shigekazu Teranishi

An actinic energy ray curable composition useful as a paint or coating agent, especially for products where scratch resistance is desired, includes a particular composition that includes a urethane (meth)acrylate obtained by reacting to an organic isocyanate having a plurality of isocyanate groups in one molecule with a polycaprolactone-modified alkyl (meth)acrylate and a long-chain alcohol.

Composition curable with actinic energy ray and use thereof

In a cured product having a thickness of 60 &#x3bc;m obtained from an actinic energy ray-curable composition of the present invention, when a scratch mark is made at a vertical load of 235 mN using a diamond indenter with a tip diameter of 15 &#x3bc;m, the scratch mark is repaired by a self-repairing ability under an atmosphere at 25&#xb0; C. and at a relative humidity of 50%. Therefore, the actinic energy ray-curable composition is useful as coating agents or paints for products where scratch resistance is required.

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.

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Aichi, Japan

Tomihisa Ohno