| abstract |
The present invention relates to a polyol resin blend for use in polyurethane formulations. The polyol resin blend generally comprises (a) an amine having a pKa value of from about 6 to about 8.5, and a methylamino-containing tertiary or primary ether amine having a pKa value greater than about 9, obtained by contacting an acid compound Protonated amines, (b) polyols, and (c) halogenated olefins. The present invention also provides polyurethane formulations containing polyol resin blends, and methods of making polyurethane foams from such polyurethane formulations. |