公开(公告)号：EP4342876A1

公开(公告)日：2024-03-27

申请号：EP22804788.2

申请日：2022-05-20

申请人： Microwave Chemical Co., Ltd.

发明人： YAMAUCHI, Tomohisa ,  HAGIMOTO, Akiyori ,  KAKUTA, Kei ,  DEGUCHI, Yukari

IPC分类号： C07C67/475 ,  C07C69/54 ,  C08J11/10

摘要： 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.