Resin premix composition, composition for rigid polyurethane foam and rigid polyurethane foam

摘要

It is an object of the present invention to provide a resin premix composition which can obtain a polyol without using a ring opening polymerization reaction of a cyclic ether and which has a storage stability even if it contains this polyol and a hydrocarbon type foaming agent, The resin premix composition is a resin premix composition comprising at least a polyol and a hydrocarbon type blowing agent, wherein the polyol is obtained by condensing a polyhydric alcohol containing 50 mol% or more of a trivalent or higher alcohol A polyether ester polyol (A) obtained by reacting a polyether polyol obtained by reacting a fatty acid and / or a fatty acid ester with a fatty acid and / or a fatty acid ester.