METHOD FOR PREPARING TERTIARY ALKYL ESTER OF (METH)ACRYLIC ACID WITH AT LEAST 4 CARBON ATOMS IN ALKYL GROUP

摘要

PROBLEM TO BE SOLVED: To provide a novel preparation method of a tertiary alkyl ester of (meth)acrylic acid with at least 4 carbon atoms in an alkyl group, provided that the method is free of disadvantages associated with conventional technology. SOLUTION: The method for preparing the tertiary alkyl ester of (meth)acrylic acid with at least 4 carbon atoms in the alkyl group comprises the steps of: (1) reacting (meth)acrylic acid with at least one olefin of formula I in a homogeneous phase in the presence of an acidic catalyst in a reactor; (2) discharging the obtained reaction mixture (1) from the reactor; (3) separating the discharged reaction mixture (2) into a mixture (3.1) containing the catalyst and a mixture (3.2) containing the target ester and; (4) removing the target ester from the mixture (3.2). (5) In the treatment step (4), at least one compound S containing at least one N-oxyl group is added as a stabilizer. COPYRIGHT: (C)2009,JPO&INPIT