| http://www.w3.org/ns/prov#value | - The tetrol can be similarly derived from pentaerithritol or the like, but is preferably derived from an alkylene diamine, thus providing a polyol with two sterically hindered tertiary nitrogens, as follows: wherein n is a small integer such as 1, A is alkylene of, for example, 24 carbon atoms, and a, b, c, and d are selected such that the equivalent weight of the tetrol is in the preferred range.
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