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A Simple, Effective Boron-Halide Ethoxylation Catalyst
Boron esters B (OR)3, readily derived from boric acid and alcohols, combine with iodide or bromide to catalyze the ethoxylation of alcohols and phenols, giving good rates and narrow product distributions of short and long chain polymers. These compounds are useful as nonionic surfactants and conjugate molecules in biological applications. This technology enables the use of base sensitive alcohols in a simple, effective, one-step process. Average molecular weight can be controlled by the amount of alcohol used in the reactor.contacts alcohol alkylene epoxide presence boron halide catalyst temperature 60

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