| 摘要 |
A method for producing a cyanoacrylate monomer, comprising the steps of (a) reacting cyanoacetate and formaldehyde or paraformaldehyde in the presence of a base or amine base catalyst to form an alpha-cyanoacrylate prepolymer or oligomer mixture; (b) subjecting the alpha-cyanoacrylate prepolymer or oligomer mixture to a substrate having free acid, acid derivative, or free aldehyde or ketone groups to remove the catalyst and to obtain a purified alpha-cyanoacrylate prepolymer or oligomer; and (c) subjecting the purified alpha-cyanoacrylate prepolymer or oligomer to depolymerization to obtain an alpha-cyanoacrylate monomer.
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