Lin An Wang

US Patent:

6350903, Feb 26, 2002

Filed:

Aug 30, 2000

Appl. No.:

09/650608

Inventors:

Paul J. Fagan - Wilmington DE
George Yanwu Li - Wilmington DE
Zhibin Guan - Hockessin DE
Lin Wang - Hockessin DE

Assignee:

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

International Classification:

C07F 950

US Classification:

562 12

Abstract:

Novel reactions used to prepare phosphole and bisphosphole compounds are detailed. Novel phosphole compounds and metal coordination compounds of phosphole and bisphosphole compounds are also provided. These metal coordination compounds are useful as catalysts for the polymerization or olefins with carbon monoxide and for the polymerization of acrylic monomers.

US Patent:

6541585, Apr 1, 2003

Filed:

May 31, 2001

Appl. No.:

09/870597

Inventors:

Lynda Kaye Johnson - Wilmington DE
Alison Margaret Anne Bennett - Wilmington DE
Kerwin D. Dobbs - Wilmington DE
Alex Sergey Ionkin - Kennett Square PA
Steven Dale Ittel - Wilmington DE
Ying Wang - West Chester PA
Catherine E. Radzewich - Wilmington DE
Lin Wang - Hockessin DE
Elisabeth Hauptman - Wilmington DE

Assignee:

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

International Classification:

C08F 444

US Classification:

526161, 526171, 526172, 526178, 526348, 526352, 502155, 502167

Abstract:

Polymers are produced using transition metal complexes that have sites capable of binding a Lewis acid in close proximity to the metal center.

US Patent:

6579999, Jun 17, 2003

Filed:

Nov 13, 2001

Appl. No.:

10/044425

Inventors:

Paul J. Fagan - Wilmington DE 19803
George Yanwu Li - Wilmington DE 19809
Zhibin Guan - Hockessin DE 19707
Lin Wang - Hockessin DE 19707

International Classification:

C07F 950

US Classification:

556200, 556 18

Abstract:

Novel reactions used to prepare phosphole and bisphosphole compounds are detailed. Novel phosphole compounds and metal coordination compounds of phosphole and bisphosphole compounds are also provided. These metal coordination compounds are useful as catalysts for the polymerization or olefins with carbon monoxide and for the polymerization of acrylic monomers.

US Patent:

6586550, Jul 1, 2003

Filed:

Jul 9, 2001

Appl. No.:

09/900954

Inventors:

Patricia Metzger Cotts - Wilmington DE
William Howard Tuminello - Newark DE
Lin Wang - Hockessin DE
Joel David Citron - Wilmington DE

Assignee:

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

International Classification:

C08F11002

US Classification:

526352

Abstract:

Polyolefins made preferably only from ethylene using a selected ethylene oligomerization catalyst to form -olefins and a polymerization catalyst which can copolymerize ethylene and -olefins produces a novel polymer which advantageous rheological properties.

US Patent:

6613915, Sep 2, 2003

Filed:

Oct 13, 1999

Appl. No.:

09/417323

Inventors:

Lynda Kaye Johnson - Wilmington DE
Alison Margaret Anne Bennett - Wilmington DE
Lin Wang - Hockessin DE
Anju Parthasarathy - Glenmoore PA
Elisabeth Hauptman - Wilmington DE
Robert D. Simpson - Philadelphia PA
Jerald Feldman - Hockessin DE
Edward Bryan Coughlin - Wilmington DE
Steven Dale Ittel - Wilmington DE

Assignee:

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

International Classification:

C07F 1504

US Classification:

548402, 548561, 548564, 556138, 402162

Abstract:

Selected olefins such as ethylene and -olefins are polymerized by nickel [II] complexes of certain monoanionic ligands. The polyolefins are useful in many applications such as molding resins, film, fibers and others. Also described are many novel nickel compounds and their precursors, as well a novel ligands.

US Patent:

6620895, Sep 16, 2003

Filed:

Sep 28, 2000

Appl. No.:

09/675028

Inventors:

Patricia Metzger Cotts - Wilmington DE
William Howard Tuminello - Newark DE
Lin Wang - Hockessin DE
Joel David Citron - Wilmington DE

Assignee:

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

International Classification:

C08F21016

US Classification:

526113, 526114, 526115, 526118, 526119, 526916, 264454, 264464, 264564, 2641761, 264459, 264477

Abstract:

Polyethylenes made from ethylene and a series of -olefins using a catalyst that copolymerizes ethylene and -olefins usually have excellent melt processing characteristics, especially in uses where high zero shear viscosity and low high shear viscosity are desirable. These polyethylenes are preferably made by forming the -olefins in situ from ethylene during the polymerization process. The polyethylenes are especially useful in blow molding, extrusion or extruded blown film processes.

US Patent:

6620899, Sep 16, 2003

Filed:

Apr 9, 2001

Appl. No.:

09/807253

Inventors:

Peter Arnold Morken - Wilmington DE
Paul R. Resnick - Cary NC
Lin Wang - Hockessin DE

Assignee:

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

International Classification:

C08F13004

US Classification:

526240, 526120, 526243

Abstract:

This invention pertains to olefins having a terminally disposed fluorocyclobutyl ring bearing a sulfonyl, sulfonic acid or sulfonate salt, a process for the production thereof, and polymers, especially ionomers, formed therefrom. The invention further pertains to ionically conductive compositions formed by the combination of a liquid and the ionomer of the invention, and electrochemical devices such as electrodes, sensors, and solid polymer electrolytes comprising those conductive compositions. The polymers of the invention arc useful in the formation of films and coatings with high chemical resistance and good physical properties. The ionomers of the invention are useful in electrochemical applications, particularly in lithium batteries. The polymeric compositions of the invention are useful for strong acid catalysis, such as Friedel-Crafts alkylation.

US Patent:

6630078, Oct 7, 2003

Filed:

Feb 16, 2001

Appl. No.:

09/785626

Inventors:

Kostantinos Kourtakis - Swedesboro NJ
Anne M. Gaffney - West Chester PA
Lin Wang - Wilmington DE

Assignee:

ConocoPhillips Company - Houston TX

International Classification:

C01B 326

US Classification:

252373, 50252724

Abstract:

Reticulated ceramic monolithic catalysts and non-poisoning catalyst supports comprising one or more metal oxides of chromium, cobalt, nickel, an alkaline earth, a rare earth, or another sinterable metal oxide that are active in any of various chemical oxidation reactions are disclosed. Methods of making the new reticulated ceramic structures comprising impregnating an organic foam or other pore-templating material are also disclosed. Processes for the catalytic conversion of light hydrocarbons to products comprising carbon monoxide and hydrogen employing reticulated ceramic catalysts are described.