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US 2014/0179895 A1Published application
Polyethers, methods of making same, and uses thereof
AssigneeCornell University
InventorsGeoffrey W. Coates, Peter C.B. Widger
Life of this patent
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Abstract
Isotactic polyethers, methods of making polyethers, and uses of polyethers. The polyethers have a chain transfer group formed from a chain transfer agent. The methods of making the polyethers use monoalcohol chain transfer agents or multifunctional chain transfer agents. The polyethers can be used in materials, such as polyurethanes, elastomers, thermoset plastics, and thermoplastics, and as non-ionic surfactants.
Claims18
A polymer having the following structure:
- wherein CTG is a chain transfer group and PE is an isotactic polyether group, and i is from 1 to 10, and
- wherein the mm-triad content of the polymer is greater than 75% and the Mn of the polymer is from 1,000 to 40,000 g/mol.
A method for making a polymer comprising the steps of:
- polymerizing an epoxide in the presence of a catalyst, an ionic co-catalyst, and a monoalcohol chain transfer agent or multifunctional chain transfer agent.
Dependencies are inferred from the claim text.