| abstract |
The present invention is suitable for the production of polyurethane foams, at least one polyol component, at least one blowing agent, catalysts that promote the formation of urethane or isocyanurate bonds, silicon-containing foam stabilizers and optionally further additives and optionally isocyanate components A composition containing at least one unsaturated halogenated hydrocarbon as a blowing agent, and additionally at least one surfactant TD free of silicon atoms having an HLB of less than 10, wherein the proportion of the sum total of the surfactant TD in the composition is a polyol A composition characterized in that it is 0.05 to 20 parts by mass per 100 parts by mass of the component, a method for producing polyurethane and polyisocyanurate foams from the polyol composition, in particular rigid foams, in particular the use of the foams as insulating materials, and also the above The same relates to the insulating material. |