Title: POLYETHERS, METHODS OF MAKING SAME, AND USES THEREOF
Number/Link: WO2012166889
Applicant/Assignee: Cornell University
Publication date: 6-12-2012
“Gist”: Isoctactic polypropyleneoxide monols or diols produced by reacting a racemic mixture of propylene oxide together with a monol or diol ‘starter’ (chain transfer agent) and a specific bimetallic-complex catalyst and an ionic co-catalyst.
Why it is interesting: Isotactic polyols would probably be highly crystalline and polyurethanes produced with them would therefore show radically different properties compared to conventional a-tactic polyols. Could be very useful in certain types of TPU, coatings, adhesives and maybe rigid foams (gas permeability).
Example of catalyst used in the invention.
Innovation in Polyurethanes 