| 摘要 |
Novel surface active agents are disclosed having the formula: <IMAGE> wherein R is hydrogen, an alkyl, alkenyl, aryl or aralkyl group; each R' is independently selected from the same group as R with the proviso that at least a majority of R' radicals attached to each Si atom are sterically hindered alkyl groups having at least 3 carbon atoms; each R''' independently is selected from hydrogen or methyl; and n is an integer of from about 10 to about 75. |
