FIELD: chemistry.
SUBSTANCE: invention refers to the composition of water binding medium for products made of mineral fiber with increased aging resistance. Composition contains water-soluble component. The component is produced by interaction of glycerin and at least one alkanolamyn with at least one carbonic acid anhydride. The ratio of components is such that the ratio of equivalents of aminogroups plus hydroxyl-groups (NH+OH) to equivalents of carboxyl groups (COOH) in the component is in the range of about 0.4-2.0. The amount of glycerin used is such that the ratio of equivalents of glycerin OH groups to total amount of equivalents of aminogroups plus hydroxyl-groups (NH+OH) is 0.1-0.9. The ready water-soluble component is not mandatory treated with the alkali. The composition is used for production of glued item by bringing mineral fibers or product of mineral fibers in contact with composition of water binding medium and its subsequent hardening at temperature 225-300°C.
EFFECT: production of mineral fibers with excellent hardening and durability characteristics, good water solubility and dilution resistance.
14 cl, 1 tbl, 8 ex
