COMPOUNDS FOR QUENCHING REACTIVE METAL CATALYTIC SPECIES REMAINED IN POLYESTER POLYOL RESINS, QUENCHING PROCESS AND ITS APPLICATION IN POLYURETHANE PRODUCTION THEREIN

摘要

A method to produce polyester polyol resin with quenched or deactivated residual catalytic metal ion species therein is disclosed. Feature organic compounds of macrocyclic ethers, alkyl and/or aryl substituted phoshine, alkyl and/or aryl substituted phosphine oxides, alkyl and/or aryl substituted phosphine sulfides, alkyl and/or aryl substituted quaternary ammonium halide salts are used as effective deactivation compounds to quench the unfavorable activities of residual metal ion species originated from the metal Lewis acid catalyst(s) during a continuous two-step process of polyester polyol production. Two deactivation processes denoted as the pre-deactivation process and the post-deactivation process are also disclosed. The polyester polyol resin product of present invention may be used as active-hydrogen atoms containing raw material for successive production of diverse two-component based polyurethane with decreased -OH/-NCO adduction rates, better color appearances and improved product qualities.