| abstract |
The invention relates to stable emulsions for the production of isocyanate-based foams, comprising at least three polyols A1a, A1b and A1c and at least one physical expansion agent T, in which A1a is a polyether, obtained by the addition of epoxies to starter compounds selected from carbohydrates and difunctional or higher functional alcohols, A1b is a polyether initiated on an aromatic amine and A1c is a polyether ether, obtained by adding epoxies to the esterification product of an aromatic dicarboxylic acid derivative and a difunctional or superior functional alcohol. The invention further relates to a process for producing foams by reactions of such emulsions with isocyanates and to the foams obtainable in this way and their use for isolation purposes. |