Synthesis of Prepolymers Containing Spiro Ortkocarbonate and Their Curing Reactions with Epoxy Resin
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Graphical Abstract
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Abstract
his paper described the Synthesis of a new spiro orthocarbonate 3,9-dihydroxymetthylene-3', 9'-diethyl--1,5,7,11-tetraoxaspiro5,5 undecane. Upon the mole ratio of spiro ortho carbonate to MDI (HDI), the prepolymers with various molecular weights were pr
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