| abstract |
Disclosed herein are HCFO-containing isocyanate-reactive compositions, foam-forming compositions comprising the isocyanate-reactive compositions, rigid PUR-PIR foams prepared using the foam-forming compositions, and methods of producing such foams, Included is the use of the foam as a thermal insulation material in discontinuous foam board applications. Isocyanate-reactive compositions can have long shelf lives, can be storage stable, and produce foams with good physical properties. |