| 摘要 |
In a method for producing 4-hydroxybutyl (meth)acrylate by reacting (meth)acrylic acid with 1,4butanediol in the presence of an acidic catalyst, the improvement in which 1,4-butanediol di(meth)acrylate is added from the beginning of the reaction so that a relationship represented by the following equation, is maintained in the reaction system, and besides the molar ratio of added 1,4-butanediol di(meth)acrylate to added (meth)acrylic acid is in a range represented by the following equation, provided that in calculating the former equation, both the 1,4-butanediol di(meth)acrylate and 4-hydroxybutyl (meth)acrylate which are present in the reaction system by addition at the beginning of the reaction or formation during the reaction are included in the calculation by taking 1,4-butanediol di(meth)acrylate to correspond to the presence of 1 mole of 1,4-butanediol and 2 moles of (meth)acrylic acid per 1 mole thereof, and 4-hydroxybutyl (meth)acrylate to correspond to the presence of 1 mole of 1,4-butanediol and 1 mole of (meth)acrylic acid per 1 mole thereof. The present invention provides 4-hydroxybutyl (meth)acrylate which is a monomer suitable for producing paint vehicles used to improve the adhesion property and weather resistance of paints by polymerization thereof.
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