| abstract |
patent summary: stable emulsions and their use in the production of isocyanate-based foams. the invention relates to stable emulsions for the production of isocyanate-based foams, comprising at least three polyols a1a, a1b and a1c, as well as at least one physical blowing agent t, wherein a1a is a polyether polyol obtained by adding from epoxides to starting compounds selected from carbohydrates and difunctional or higher functional alcohols, a1b is an aromatic amine initiated polyether polyol and a1c is a polyester polyol obtained by esterifying a polycarboxylic acid component and a polyalcohol, wherein the total amount of aromatic dicarboxylic acid derivatives used in the esterification, calculated on the basis of free aromatic dicarboxylic acids and based on the total mass of the polyalcohol component and polycarboxylic acid component is less than or equal to 48.5% by mass. |