N,N'-m-phenylenedimaleimide and preparation method thereof

The invention provides a preparation method of a multifunctional rubber vulcanizer N,N'-m-phenylenedimaleimide under the condition of no acetic anhydride. M-phenylenediamine, cis butenyl maleic anhydride, toluene and ethyl acetate are used as raw materials to synthesize the N,N'-m-phenylenedimaleimide. The reaction process is simple and does not need acid anhydride or any other catalyst; and the obtained product has high purity.