Patent ID: 8779018

Claim:
A raw material-blended composition for producing a rigid polyurethane foam and/or an isocyanurate-modified rigid polyurethane foam comprising an aromatic polyester polyol component, water, a blowing agent, and a catalyst composition comprising at least the following amine compounds (A) and (B): (A) a quaternary ammonium salt represented by the following general formula (1): wherein each of R 1 to R 3 represents a saturated or unsaturated hydrocarbon group having 1 to 12 carbon atoms, R 4 represents an alkyl group or an aromatic hydrocarbon group having 1 to 18 carbon atoms, and X represents an organic acid group selected from the group consisting of acetic acid and formic acid, provided that any two of R 1 to R 3 may together form a hetero ring through a carbon atom, an oxygen atom, or a nitrogen atom; (B) one or more hydrophobic amine compounds selected from the group consisting of N-methyldicyclohexylamine, N,N-dimethyloctylamine, N,N-dimethylnonylamine, N,N-dimethyldecylamine, N,N-dimethylundecylamine, N,N-dimethyldodecylamine, N,N-dimethyltridecylamine, N,N-dimethyltetradecylamine, N,N-dimethylpentadecylamine, N,N-dimethylhexadecylamine, N,N-dimethylheptadecylamine, N,N-dimethyloctadecylamine, N-methyldioctylamine, N-methyldinonylamine, N-methyldidecylamine, N-methyldiundecylamine, N-methyldidodecylamine, N-methylditridecylamine, N-methylditetradecylamine, N-methyldipentadecylamine, N-methyldihexadecylamine, N-methyldiheptadecylamine, and N-methyldioctadecylamine, and wherein the blowing agent is at least one selected from the group consisting of 1,1,1,3,3-pentafluorobutane, 1,1,1,3,3-pentafluoropropane, 1,1,1,2-tetrafluoroethane, 1,1,1,2,3,3,3-heptafluoropropane, 1,1,1,2,3,3-hexafluoropropane, 1,1,1,4,4,4-hexafluorobutane, propane, butane, pentane, cyclopentane, and hexane.