| abstract |
Phosphoric acid esters and their salts of the formula (I) (OH) 3-n - - (OR) n (I) characterized in that R contains an aliphatic, cycloaliphatic and / or aromatic radical without Zerewitinoff hydrogen with an average molecular weight containing at least one ether oxygen atom (-O-) and at least one carboxylic acid ester group (-COO-) and / or urethane group (-NHCOO-) M n represents from 200 to 10,000, where the hydrogen atoms of the aliphatic groups can be partially replaced by halogen atoms, and the ratio of the number of ether oxygen atoms to the number of carboxylic acid ester groups and / or urethane groups in the molecule (or in each group R) in the range from 1 : 20 to 20: 1, and that n is 1 or 2, process for their preparation and their use as dispersants. |