LOW K-FACTOR RIGID FOAM SYSTEMS

摘要

The present invention provides rigid polyurethane foams prepared by mixing a n isocyanate with a polyol component containing an aromatic amine~initiated polyether polyol, an aromatic polyester polyol and optionally, a sucrose-bas ed polyether polyol. The inventive foams have good properties as indicated by a n initial k-factor at 35~F of from about 0.115 to about 0.120 BTU-in./hr. ft2 ~F and may find use as insulation materials in the construction and refrigerati on industries.