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Novel bio‐based polyols were prepared from hydroformylated oleic acid (9/10‐hydroxymethyl‐octadecanoic acid) methyl esters (HFME) and trimethylolpropane by transesterification. Hydroformylation produces primary hydroxyls, which allow relatively lower transesterification temperatures and better yields than hydroxy fatty acids with secondary hydroxyl groups. These non‐crystallizing polyols have no double...
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