MANUFACTURING METHOD OF DIMETHYL 2-METHYLENEMALONATE WITH EXCELLENT ADHESION CAPABLE OF PREVENTING USE AND GENERATION OF CANCEROGENIC MATERIAL AND EASILY FACILITATING REMOVAL OF WATER

摘要

PURPOSE: A manufacturing method of dimethyl 2-methylenemalonate is provided to manufacture dimethyl 2-methylenemalonate with high stability and low emitting amount of formaldehyde by hydrolysis, to have excellent solubility and thermal stability, and moderate hardness and flexibility.;CONSTITUTION: A manufacturing method of dimethyl 2-methylenemalonate comprises a step of synthesizing a polymer through a condensation of formaldehyde and malonate, and conducting heat depolymerization in a vacuum state. When polymerizing, a solvent with a density lower than water and a boiling point of 74-177°C is used. The solvent is one selected from methyl isobutyl ketone, acetic acid and ethylacetate. The comprised amount of the solvent is 200-300 parts by weight based on 100.0 parts by weight of the formaldehyde and malonate.;COPYRIGHT KIPO 2013;[Reference numerals] (AA) Estimated value 72g(0.5mol); (BB) Estimated value 9g(0.5mol)