| abstract |
Polyether polyols initiated with ortho-cyclohexanediamines, such as 1,2-diaminocyclohexane, are used in rigid polyurethane foam formulations in conjunction with a polyol initiated with aromatic amine, a polyester polyol, or a polyol derived from a renewable resource. The mixture of polyols are useful for making rigid polyurethane foams, especially foams for empty-in-place applications, where they give a good combination of low k factor and short demoulding times. |