Title:
RING OPENING POLYMERIZATION OF CYCLIC AMIDES USING N-HETEROCYCLIC CARBENE CATALYSTS
Document Type and Number:
WIPO Patent Application WO2006053071
Kind Code:
A3
Abstract:
N-heterocyclic carbenes are effective catalysts for the ring opening polymerization of cyclic amides. The catalysts provide rapid polymerization, high monomer conversion, high molecular weight, and a mechanically sound material.
Inventors:
TAM WILSON (US)
WILLIAMSON DAVID T (US)
WILLIAMSON DAVID T (US)
Application Number:
PCT/US2005/040637
Publication Date:
October 19, 2006
Filing Date:
November 09, 2005
Export Citation:
Assignee:
DU PONT (US)
TAM WILSON (US)
WILLIAMSON DAVID T (US)
TAM WILSON (US)
WILLIAMSON DAVID T (US)
International Classes:
C08G69/20
Domestic Patent References:
| WO2004060987A2 | 2004-07-22 |
Foreign References:
| DE1953899A1 | 1971-05-06 |
Other References:
JANUSZ BARAN, E.A.: "Synthesis and ring-opening metathesis polymerization of eight-membered unsaturated lactams and related monomers", JOURNAL OF MOLECULAR CATALYSIS A : CHEMICAL, vol. 190, 2002, pages 109 - 116, XP002387526
A. FÜRSTNER, E.A.: "Ruthenium carbene complexes with N,N-Bis(mesityl) imida- zol-2-ylidene Ligands: RCM Catalysts of Extended Scope", J. ORG. CHEM., vol. 65, 2000, pages 2204 - 2207, XP002387527
G.W. NYCE, E.A.: "In situ generation of carbenes: A general and versatile platform for organocatalytic living polymerization", J. AM. CHEM. SOC., vol. 125, 2003, pages 3046 - 3056, XP002391566
RUSSELL C. PRATT, E.A.: "Extending the reactivity of N-heterocyclic carbenes to polymerization of functional and biomimetic monomers", POLYMER PREPRINTS, vol. 46, no. 2, 2005, pages 902 - 902, XP002387528
DATABASE WPI Section Ch Week 198851, Derwent World Patents Index; Class A23, AN 1988-366151, XP002387532
GREGORY W. NYCE, E.A.: "Expanding the catalytic activity of nucleophilic N-heterocyclic carbenes for transesterification reactions", ORGANIC LETTERS, vol. 4, no. 21, 2002, pages 3587 - 3590, XP002387529
WOLFGANG A. HERRMANN, E.A.: "N-heterocyclic Carbenes", ANGEW. CHEM. INT. ED. ENGL., vol. 36, 1997, pages 2163 - 2187, XP002387530
PATENT ABSTRACTS OF JAPAN vol. 008, no. 212 (C - 244) 27 September 1984 (1984-09-27)
A. FÜRSTNER, E.A.: "Ruthenium carbene complexes with N,N-Bis(mesityl) imida- zol-2-ylidene Ligands: RCM Catalysts of Extended Scope", J. ORG. CHEM., vol. 65, 2000, pages 2204 - 2207, XP002387527
G.W. NYCE, E.A.: "In situ generation of carbenes: A general and versatile platform for organocatalytic living polymerization", J. AM. CHEM. SOC., vol. 125, 2003, pages 3046 - 3056, XP002391566
RUSSELL C. PRATT, E.A.: "Extending the reactivity of N-heterocyclic carbenes to polymerization of functional and biomimetic monomers", POLYMER PREPRINTS, vol. 46, no. 2, 2005, pages 902 - 902, XP002387528
DATABASE WPI Section Ch Week 198851, Derwent World Patents Index; Class A23, AN 1988-366151, XP002387532
GREGORY W. NYCE, E.A.: "Expanding the catalytic activity of nucleophilic N-heterocyclic carbenes for transesterification reactions", ORGANIC LETTERS, vol. 4, no. 21, 2002, pages 3587 - 3590, XP002387529
WOLFGANG A. HERRMANN, E.A.: "N-heterocyclic Carbenes", ANGEW. CHEM. INT. ED. ENGL., vol. 36, 1997, pages 2163 - 2187, XP002387530
PATENT ABSTRACTS OF JAPAN vol. 008, no. 212 (C - 244) 27 September 1984 (1984-09-27)
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