Reaction sequence according to the invention
June 16, 2017 15:00
Title: POLYURETHANE MATERIALS FORMED FROM UNSATURATED PLANT OILS VIA AN ALKYNE ZIPPER REACTION
Number/Link: US2017/0166679 US2017/0166680
Applicant/Assignee: IBM
Publication Date: 15-june-2017
“Gist”: Oils are turned into alkyne alcohols, ‘zippered’ and oxidized to polyols
Why it is interesting: This is yet another IBM patent application about interesting, albeit somewhat exotic, chemistry and featuring only “prophetic” examples. In this case unsaturated natural oils are first converted into unsaturated alcohols and then into alkynes by bromination and elimination. The internal alkynes are then converted to terminal alkynes by an “alkyne zipper reaction” and then into hydroxyl groups by hydroboration and epoxidation/ring-opening. This series of reactions should result in polyols having two primary- and one or more secondary OH groups, useful, for example, for the preparation of sound absorbing foams.
Reaction sequence according to the invention
Posted by Gerhard Bleys
Categories: Flexible Foams, Polyols
Tags: acoustics, alkyne, bio-based materials, Environment, NOP polyols, renewable materials, sound absorption, zipper reaction
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