2004•Fine and Specialty ChemicalsRequires access

Research on Low Free TDI of PU Prepolymer

Sun Guo

Abstract

The route for synthesizing the prepolymer based on toluene diisocyanate(TDI),trimethylol propane(TMP) and 1,4 butanediol(1,4 BD) in presence of catalyst has been described .The influence of the ratio of TDI/TMP, type of catalyst and reaction temperature on the content of free TDI monomer has been discussed. And the effective measures to reduce the harmful free monomer containing in the prepolymer were provided.

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Available abstract

Key concepts: Prepolymer, Toluene diisocyanate, Monomer, Propane, Catalysis, Polyurethane, Chemistry, Polymer chemistry