Urethane (meth)acrylate mixture and urethane (meth)acrylate composition

The present invention provides a urethane (meth)acrylate, which can form a cured film having a self-repair property, exhibiting excellent anti-wearing property, and simultaneously containing low curing shrinkage and flexing resistance. The urethane (meth)acrylate mixture (C) of the present invention...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: ISHIKAWA, MASAKAZU, TAMAI, TETSUYA, KUSUMOTO, MITSUSHI
Format: Patent
Sprache:chi ; eng
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Beschreibung
Zusammenfassung:The present invention provides a urethane (meth)acrylate, which can form a cured film having a self-repair property, exhibiting excellent anti-wearing property, and simultaneously containing low curing shrinkage and flexing resistance. The urethane (meth)acrylate mixture (C) of the present invention is obtained by carrying out the reaction of (A) a polymerizable polyoxyethylene derivative mixture and (B) a polyisocyanate ester compound as shown by the formula (2). The (A) polymerizable polyoxyethylene derivative mixture is composed of 85~95 mass% of (A1) a polymerizable polyoxyethylene derivative as shown by the formula (1) and 5~15 mass% of (A2) hydroxyethyl (meth)acrylate; in the formula, R represents hydrogen atom or methyl group, and n is the average addition mole number with n=3~9; in the formula, R each independently represents alkylidene group with 1~10 carbon atoms.