| 摘要 |
The invention relates to sulfonated condensation products which are stabile in storage and which are based on aminoplastic formers comprising at least two amino groups or naphthalene and formaldehyde and, optionally comprising organic nitrogen bases which additionally contain, as nitrogenous formulatio n auxiliary agents, compounds of general formula (I) R1-NH-X-Y-R2, wherein R1 and R2, independent of one another, represent H, -CH3, -C2H5, -C3H7, -(CH2)n - CH2-; X = -CH2, CO, CS; Y = S, NH, -(CH2)m-; n = O to 9; m = 1 to 4; and/or compounds of general formula (II), wherein Z = -OCH3, -SO3H, -SO3-Na+, -NO2, - NH2, -NH-NH2, -CO2-Na+, -CHO. According to the invention, the mol ratio of aminoplastic formers: formaldehyde: sulfite: nitrogenous formulation auxilia ry agents equals 1: 1.9 to 6.0: 1.0 to 2.0: 0.01 to 1.5 and/or the mol ratio of naphthalene sulfonic acid: formaldehyde: nitrogenous formulation auxiliary agents equals 1: 0.7 to 3.0: 0.01 to 1.5. The invention also relates to a method for producing these condensation products and to their use, especiall y as additives for inorganic binding agents and for hydraulically setting dry mixtures that contain these inorganic binding agents. The inventive sulfonat ed condensation products which are stabile in storage are characterized, above all, by having a significantly increased thermal stability.
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