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US 8,541,500 B2Granted
Cardanol-based associative polyurethanes, corresponding associative thickeners and uses thereof
AssigneeCoatex
InventorsJean-Marc Suau, Denis Ruhlmann
Life of this patent
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Abstract
New associative polyurethanes which are manufactured with cardanol which is potentially oxyethylated. Use of these polyurethanes as thickening agents for aqueous formulations.
Claims18
A water-soluble polyurethane resulting from the condensation of:
- a) oxyalkylated cardanol and a polyalkylene glycol, and
- b) at least one polyisocyanate,
- wherein said water-soluble polyurethane consists of polymerized units of said oxyalkylated cardanol, said polyalkylene glycol and said at least one polyisocyanate.
Dependencies are inferred from the claim text.