Aqueous dispersions of a nonionic, water dispersible polyurethane having pendent polyoxyethylene chains
September 13, 2009. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3905929 3920598 Water-dispersible polyurethanes Process for the preparation of aqueous dispersions of polyurethanes Stable, colloidal, aqueous dispersions of cross-linked urea-urethane polymers and their method of production Solid, water-dispersible plastics precursors containing isocyanate groups, a process for the production of aqueous plastics dispersions using such plastics precursors Coating agents of polyurethane dispersions and the use thereof for top coats and finishes Process for the production of aqueous dispersions of polyurethane polyureas, the dispersions obtainable by this process and their use as coating compositions Patent #: 4745151 InventorsApplicationNo. 406878 filed on 09/13/1989US Classes:524/591, Water DNRM524/839Solid polymer or SICP derived from -N=C=X (X is chalcogen) containing reactantExaminersPrimary: Kight, III, JohnAssistant: Daley, Dennis R. Attorney, Agent or FirmInternational ClassC08L 075/04Foreign Application Priority Data1987-09-14 GBAbstractAn aqueous dispersion of a nonionic water-dispersible polyurethane having pendent polyoxyethylene chains and one crosslink per 3,000 to 100,000 atomic weight units. The dispersions are useful as coating compositions. | |
