| 摘要 |
<p>PURPOSE:To produce the subject compound having low volatility, odor, viscosity and toxicity in high yield by adding dicyclopentadiene to an easily available acrylate using a catalyst such as heteropoly acid. CONSTITUTION:The objective compound of formula II (e.g. the compound of the formula wherein R<1> is CH3, R<2> is H and n is 1) can be produced by reacting (A) a compound of formula I (R<1> and R<2> are H or CH3; n is integer of 1-20) (e.g. 1mol adduct of epsilon-caprolactone to 2-hydroxyethyl methacrylate) with (B) dicyclopentadiene in the presence of a catalyst consisting of a heteropoly acid or its acidic salt, especially heteropoly acid of tungsten or its acidic salt (particularly 12-tungstophosphoric acid, 12-tungstosilicic acid, 12-tungstoboric acid or their acidic salts). The compound of formula II producible by the above simplified process at a low cost is useful also as coating material, molding material, etc., and reactive diluent for coating material, etc.</p> |
