Method for producing (meth)acrylic monomer

Abstract

The purpose of the present invention is to provide a method for producing a (meth)acrylic monomer that suppresses heterogeneity of a (meth)acrylic resin depolymerization system and that makes it easier for microwaves to reach the system interior efficiently. According to this method for producing a (meth)acrylic monomer, which includes a step 1 for irradiating a prepared (meth)acrylic resin with microwaves and mixing to obtain a melt containing a (meth)acrylic resin having reduced molecular weight, a step 2 for adding additional (meth)acrylic resin to the melt and mixing to obtain a mixture containing additional (meth)acrylic resin in the melt, and a step 3 for irradiating the mixture with microwaves and mixing to obtain a (meth)acrylic monomer, it is possible to suppress heterogeneity of the (meth)acrylic resin depolymerization system and to make it easier for microwaves to reach the system interior efficiently.

Dependencies are inferred from the claim text.