Dai-ichi Kogyo Seiyaku Co., Ltd.

Masato Kameda

Naohiro Takamura

Manabu Kikuta

Teruaki Sugahara

An alkylene oxide-modified polyfunctional (meth)acrylate is provided wherein the problems according to high crystallinity or high viscosity are improved, and the photosensitivity, etc. is enhanced. The compound has a structure represented by the following formula (I), provided that in the formula (I), R represents a substituent represented by the formula (II); AO represents one member or two or more members selected from alkylene oxide units represented by &#x2014;CHCHO&#x2014;, &#x2014;CHCH(CH)O&#x2014;, &#x2014;CHCHCHCHO&#x2014; and &#x2014;CHCH(CH)O&#x2014;; l indicating the average polymerization degree of the added alkylene oxide is 0&#x3c;l&#x2264;5; the average value of m is more than 0 and 6 or less; each of the average values of n and o is from 0 to 6, the total value of m, n and o is 6, and in the formula (II), Rrepresents a hydrogen atom or a methyl group. 

Alkylene oxide-modified dipentaerythritol (meth)acrylate and reactive composition containing same

The present invention is directed to a urethane acrylate containing a reaction product of an alkylene oxide-modified dipentaerythritol (meth)acrylate.

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Kyoto, Japan

Masato Kameda