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US 5,312,882 AGranted
Heterogeneous polymerization in carbon dioxide
AssigneeThe University of North Carolina at Chapel Hill
InventorsJoseph M. DeSimone, Elise E. Maury, James R. Combes, Yusuf Z. Menceloglu
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Abstract
The heterogeneous polymerization of water-soluble polymer in CO.sub.2 is disclosed. The method comprises providing a heterogeneous reaction mixture comprising CO.sub.2, a monomer, and a surfactant, then polymerizing the monomer to form a water-soluble polymer.
Claims10
A method of carrying out the heterogenous polymerization of a water-insoluble polymer, the method comprising:
- providing a heterogeneous reaction mixture comprising carbon dioxide, a monomer, and a surfactant that stabilizes said monomer in said carbon dioxide, wherein said surfactant comprises a carbon dioxide soluble segment;
- polymerizing said monomer in said reaction mixture to form said water-insoluble polymer.
Dependencies are inferred from the claim text.