CONTINUOUS SLAVE-TYPE POLYURETHANE HARD FOAMS WHICH ARE ENVIRONMENT-FRIENDLY BY NOT USING A FOAMING AGENT OF LOW BOILING POINT ORGANIC COMPOUND AND A MANUFACTURING METHOD THEREOF

摘要

PURPOSE: A continuous slave-type polyurethane hard foam is provided to satisfy high storage stability and ellent mechanical properties using only polyether polyol and to save costs using water as a foaming agent. ;CONSTITUTION: A continuous slave-type polyurethane hard foam is obtained by reacting polyol and polyisocyanate compounds in the presence of catalyst, foaming agent and surfactants. The polyol includes 10-70 weight% of first polyether polyol having a trifunctional group in which OH value is 10~100, 10-70 weight% of second polyether polyol having a trifunctional group in which OH value is 300~600, 0~30 weight% of polyether having a tetra functional group in which OH-V is 35~700, and 0~30 weight% of polyether having tetra~hexa functional groups in which OH-V is 300~600. The foaming agent is water.;COPYRIGHT KIPO 2011