Karl J Sweetman

6670433, Dec 30, 2003

Apr 2, 2001

09/824461

Stephan James McLain - Wilmington DE
Elizabeth Forrester McCord - Hockessin DE
Alison Margaret Anne Bennett - Wilmington DE
Steven Dale Ittel - Wilmington DE
Karl Jeffrey Sweetman - Wilmington DE
Mark F. Teasley - Landenberg PA

E. I. du Pont de Nemours and Company - Wilmington DE

C08F 442

526161, 526308, 5261691, 526217, 526236, 526133, 526141, 502200, 502229

Substituted cyclopentenes, such as alkyl cyclopentenes, are polymerized by selected -imine complexes of nickel and palladium. The polymers are useful as molding resins or elastomers. Also disclosed herein are novel catalysts for the polymerization of cyclopentenes to form novel higher melting homopolycyclopentenes.

6780949, Aug 24, 2004

Nov 15, 2002

10/295319

Lynda Kaye Johnson - Wilmington DE
Stephan J. Mclain - Wilmington DE
Karl J. Sweetman - Wilmington DE

E. I. du Pont de Nemours and Company - Wilmington DE

C08F 426

526172, 526126, 502158, 502171, 502167

Olefin polymerizations employing a complex of a Group 8, 9, or 10 transition metal with a bidentate ligand as part of the polymerization catalyst system are improved by adding to the polymerization a silicon compound in which at least one atom of a Group 15 or 16 element is bound to a silicon atom. The polymerizations often have increased polymer productivity and/or the polymerization catalyst has a longer half life.

7348388, Mar 25, 2008

Nov 15, 2002

10/295606

Steven Dale Ittel - Wilmington DE, US
Lynda Kaye Johnson - Wilmington DE, US
Lin Wang - Hockessin DE, US
Ying Wang - Wilmington DE, US
Elizabeth Forrester McCord - Hockessin DE, US
Catherine E. Radzewich - Wilmington DE, US
Stephan J. Mclain - Wilmington DE, US
Karl J. Sweetman - Wilmington DE, US
Alison Margaret Anne Bennett - Wilmington DE, US
Alex Sergey Ionkin - Kennet Square PA, US
Rinaldo S. Schiffino - Wilmington DE, US

E.I. du Pont de Nemours and Company - Wilmington DE

C08G 30/08

526279, 526242

Ethylene and allyl- or vinylsilanes are efficiently copolymerized by certain late transition metal complexes containing selected bidentate or tridentate ligands. The resulting novel polymers may be crosslinked by moisture when vinylsilane contains groups bound to silicon which are hydrolyzable. The polymers are useful for wire coating, crosslinked foams, pipes, and other uses.

8022152, Sep 20, 2011

Dec 19, 2007

12/002925

Steven Dale Ittel - Wilmington DE, US
Lynda Kaye Johnson - Wilmington DE, US
Lin Wang - Hockessin DE, US
Ying Wang - Wilmington DE, US
Elizabeth Forrester McCord - Hockessin DE, US
Catherine E. Radzewich - Iowa City IA, US
Stephan James McLain - Wilmington DE, US
Karl Jeffrey Sweetman - Wilmington DE, US
Alison Margaret Anne Bennett - Wilmington DE, US
Alex Sergey Ionkin - Kennett Square PA, US
Rinaldo Soria Schiffino - Wilmington DE, US

E.I. du Pont de Nemours and Company - Wilmington DE

C08F 2/38
C08F 4/00
C08F 30/08
C08F 210/00

526 82, 526 90, 526279, 526348

Ethylene and allyl- or vinylsilanes are efficiently copolymerized by certain late transition metal complexes containing selected bidentate or tridentate ligands. The resulting novel polymers may be crosslinked by moisture when vinylsilane contains groups bound to silicon which are hydrolyzable. The polymers are useful for wire coating, crosslinked foams, pipes, and other uses.

8053606, Nov 8, 2011

Apr 30, 2009

12/432825

Karl Jeffrey Sweetman - Wilmington DE, US
Scott Andrew Backer - Philadelphia PA, US

E.I. du Pont de Nemours and Company - Wilmington DE

C07C 41/01
B01J 31/02
B01J 31/16

568615, 568677, 502150, 502164, 502169

A fluorinated alkylalkoxylate, and a process for its preparation in which at least one fluorinated alcohol is contacted with at least one alkylene epoxide in the presence of a catalyst system comprising an alkali metal borohydride, and an organic quaternary salt.

62589083, Jul 10, 2001

Mar 26, 1999

9/277095

Stephan James McLain - Wilmington DE
Elizabeth Forrester McCord - Hockessin DE
Alison Margaret Anne Bennett - Wilmington DE
Steven Dale Ittel - Wilmington DE
Karl Jeffrey Sweetman - Wilmington DE
Mark F. Teasley - Landenberg PA

E. I. du Pont de Nemours and Company - Wilmington DE

C08F 3204

526308

Substituted cyclopentenes, such as alkyl cyclopentenes, are polymerized by selected. alpha. -imine complexes of nickel and palladium. The polymers are useful as molding resins or elastomers. Also disclosed herein are novel catalysts for the polymerization of cyclopentenes to form novel higher melting homopolycyclopentenes.