| abstract |
Polyether polyols disclosed as ortho-cyclohexanediamines, such as 1,2-diamicyclohexane, are used in rigid polyurethane foam formulations with aromatic amine-initiated polyols and / or low levels of tertiary amine catalysts. Polyol mixtures are useful for the production of rigid polyurethane foams, especially foams for injectable articles, providing a good combination of low k-factor and short demold time. |