C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
C07C 67/08 (2006.01) C07C 69/54 (2006.01)
Patent
CA 2044306
ABSTRACT OF THE DISCLOSURE In a method for producing 4-hydroxybutyl (meth)acrylate by reacting (meth)acrylic acid with 1,4- butanediol 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, Image 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, Image 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.
Kobayashi Masao
Sato Toshihiro
Gowling Lafleur Henderson Llp
Mitsubishi Rayon Co. Ltd.
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