| 摘要 |
<p>Fire-retardant tetrabromobisphenol oligomers of formula (1), wherein R or R' is a branched or unbranched alkyl radical; Xi is a halogen, preferably Br, wherein i is an integer from 0 to 4; G is a connecting group selected from the group consisting of a single bond, a branched or unbranched divalent aliphatic hydrocarbon radical of from 1 to 10 carbon atoms, oxygen, sulfur, sulfoxide, SO2, or oxygen-, silicon-, sulfur- or nitrogen-containing aliphatic hydrocarbon radicals such as -OR'O-, -OR'OR'O-, -SR'S-, -SR'SR'S-, -OSiR2O-, -OSiR2OSiR2O-, O2C-R'-CO2, CO2-R'-O2C, SO-R'-SO-, SO2-R'-SO2, wherein R' is a divalent aliphatic hydrocarbon radical; A is a branched or unbranched alkyl diradical; and n is 0 or a positive integer. The fire-retardant tetrabromobisphenol oligomers of the present invention are advantageous due to their non-reactive end-caps.</p> |
