prov:value
| - Examples of starter molecules used are water, glycols, such as ethylene glycol, propylene glycol, 1,4-butanediol and 1,6-hexanediol, amines, such as ethylenediamine, hexamethylenediamine and 4,4???-diaminodiphenyl-methane, and amino alcohols, such as ethanolamine.
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