Unsaturated polyester is an unsaturated dicarboxylic acid (or anhydride) or mixtures thereof with unsaturated dicarboxylic acid (or anhydride) mixed acid composition with a polyol condensation from having an ester bond and an unsaturated double bond in a linear The polymer compound. Typically, the polycondensation reaction is polyesterification 190 ~ 220 ℃, until you achieve the desired acid value (or viscosity) After the end of the condensation reaction of polyester, adding a certain amount of hot vinyl monomers, dubbed viscous liquid, so called non-polymer solution unsaturated polyester resin.
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