| 摘要 |
<p>Rigid polyurethane foams obtained by reacting (a) organic polyisocyanates and/or modified organic polyisocyanates, and (b) compounds having at least two hydrogen atoms reactive with isocyanate groups in the presence of (c) optionally additional polyester polyols, (d) optionally polyetherol polyols, (e) optionally flameproofing agents, (f) one or more blowing agents, (g) catalysts and (h) optionally additional auxiliary agents and/or additives, is claimed. Rigid polyurethane foams obtained by reacting (a) organic polyisocyanates and/or modified organic polyisocyanates, and (b) compounds having at least two hydrogen atoms reactive with isocyanate groups in the presence of (c) optionally additional polyester polyols, (d) optionally polyetherol polyols, (e) optionally flameproofing agents, (f) one or more blowing agents, (g) catalysts and (h) optionally additional auxiliary agents and/or additives, is claimed, where the component (b) contains (a1) a reaction product of 15-40 wt.% of one or more polyols or polyamines having an average functionality of 2.5-8, (a2) 2-30 wt.% of one or more fatty acids or fatty acid monoesters, and (a3) 35-70 wt.% of one or more alkylene oxides having 2-4C. An independent claim is included for a polyol mixture comprising (b)-(h).</p> |
