Patent ID: 8586791

Claim:
A method for producing a (meth)acrylic anhydride, comprising: reacting a fatty acid anhydride represented by formula (1) with a (meth)acrylic acid to produce the (meth)acrylic anhydride, while extracting a fatty acid produced in said reacting and adjusting a molar ratio of the (meth)acrylic acid to the (meth)acrylic anhydride in a reaction liquid to be 0.3 or more, wherein a molar ratio of the (meth)acrylic acid to the (meth)acrylic anhydride is from 0.3 to 2 at a completion of said reacting, wherein R 1 represents a linear or branched alkyl group or alkenyl group having 1 to 3 carbon atoms, and R 2 represents a linear or branched alkyl group having 1 to 3 carbon atoms.