| 摘要 |
A bitumen and/or asphalt products additive consists of from 45 to 99,8 percent by weight of partial salt and/or alkanolamide of at least one dicarboxylic acid from C4 to C6, and/or aromatic dicarboxylic acid C8 (phthalic) with one alkanolamine (mono-, di-, triethanolamine) being prepared by addition and/or condensation in mole COOH to alkanolamine ratio of 1 : 0,3 to 1,5. At least one compound selected from the salts of hydroxycarboxylic aliphatic acids C5-C6, carboxylic acids C2-C6, salt acid, vitriolic acid, trihydrogenephosphoric acid with more than one alkanolamine and non-converted starting compound represent a residual to 100 percent of weight of the product. It is prepared from the starting substances in the addition and condensation process commenced at temperature from 40 to 180 degrees Celsius; from 2 to 400 kPa in -COOH to alkanolamine mole ratio = 1 : 0,3 - 1,5. Volatile proportions, with boiling temperature at least up to 165 degrees Celsius, are separated. |
