(12) United States Patent (10) Patent No.: US 8,350,056 B2 FOO Et Al
USOO835.0056B2 (12) United States Patent (10) Patent No.: US 8,350,056 B2 FOO et al. (45) Date of Patent: *Jan. 8, 2013 (54) FUNCTIONALIZED N-SUBSTITUTED 2010, 0140166 A1* 6, 2010 Erdner-Tindall et al. ..... 210,603 2010.0143992 A1* 6, 2010 Erdner-Tindall et al. ..... 435,160 PYRROLIDONIUM IONIC LIOUIDS 2010.0143993 A1* 6, 2010 Erdner-Tindall et al. ..... 435,160 2010.0143994 A1* 6, 2010 Erdner-Tindall et al. ..... 435,160 (75) Inventors: Thomas Foo, Wilmington, DE (US); 2010.0143995 A1 6, 2010 Erdner-Tindall et al. ..... 435,160 Mark Andrew Harmer, Landenberg, 2010.0143999 A1* 6, 2010 Erdner-Tindall et al. ..... 435,161 2010/0.144000 A1* 6, 2010 Erdner-Tindall et al. ..... 435,161 PA (US); Keith W. Hutchenson, Lincoln 2010, 0145073 A1 6, 2010 Foo University, PA (US); Christopher P. 2010, O152465 A1 6, 2010 Davis Junk, Wilmington, DE (US); Berlyn R. Mellein, Wilmington, DE (US); Aaron FOREIGN PATENT DOCUMENTS Minter, Wilmington, DE (US) WO O3O48078 A2 6, 2003 WO 201OO65816 6, 2010 WO 201OO65841 6, 2010 (73) Assignee: E I du Pont de Nemours and WO 2010.065873 6, 2010 Company, Wilmington, DE (US) WO WO 2010.065606 A2 * 6, 2010 (*) Notice: Subject to any disclaimer, the term of this OTHER PUBLICATIONS patent is extended or adjusted under 35 Cardoso et al., Synthesis, Characterization, and Thermal and Dielec U.S.C. 154(b) by 136 days. tric Properties of Three Different Methacrylate Polymers With Zwit terionic Pendant Groups, J. Polymer Sci., Part B: Polymer Physics, This patent is Subject to a terminal dis 1997, vol.
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