| 摘要 |
<p>The invention concerns polyoxyethylene-polyoxypropylene aliphatic amines according to general formula (1) wherein R is a linear or branched saturated or unsaturated aliphatic group of 6-22 carbon atoms, n1 and n2 are each between 1 and 50 and represent the total number of EO groups in each chain and m1 and m2 are each between 1 and 10 and represent the total number of PO groups in each chain, with the proviso that the sums of n1 and n2 and of m1 and m2 are both at least 3, wherein in each chain the EO groups are present in discrete blocks of between 2 and 10 EO groups if that chain contains 2 or more EO groups and wherein in each chain the PO groups are present in discrete blocks of between 1 and 10 PO groups. The compounds may be prepared from the corresponding aliphatic amine by alternating ethoxylation and propoxylation. The compounds are very efficient surfactants which have very low critical micellar concentrations. They are suitable for use in a wide variety of detergent compositions.</p> |
