Maciej M Radosz

US Patent:

8449652, May 28, 2013

Filed:

Aug 5, 2005

Appl. No.:

11/659484

Inventors:

Maciej Radosz - Laramie WY, US
Youqing Shen - Laramie WY, US

Assignee:

University of Wyoming - Laramie WY

International Classification:

B01D 53/22
B01D 53/02

US Classification:

95 51, 95 92, 95139, 96 4, 96153

Abstract:

Polymerizable ionic liquid monomers and their corresponding polymers (poly(ionic liquid)s) are created and found to exhibit high CO2 sorption. The poly(ionic liquid)s have enhanced and reproducible CO2 sorption capacities and sorption/desorption rates relative to room-temperature ionic liquids. Furthermore, these materials exhibit selectivity relative to other gases such as nitrogen, methane, and oxygen. They are useful as efficient separation agents, such sorbents and membranes. Novel radical and condensation polymerization approaches are used in the preparation of the poly(ionic liquids).

US Patent:

7994087, Aug 9, 2011

Filed:

Nov 14, 2006

Appl. No.:

11/599110

Inventors:

Maciej Radosz - Laramie WY, US
Youqing Shen - Laramie WY, US
Huadong Tang - Laramie WY, US

Assignee:

Wyoming Research Products Center - Laramie WY

International Classification:

B01J 31/00

US Classification:

502155, 502162, 502167

Abstract:

A class of catalysts with unusually high activity for polymerizing vinyl monomers such as acrylates, methacrylates and styrene is described. The catalysts consists of a metal halide such as CuBr and FeBrligated with multidentate amine-based ligands, for example N,N,N′,N′-tetra[(2-pyridal)methyl]ethylenediamine, and additives. The additives, which are tertiary amine compounds, can greatly increase the catalytic activity. The complex is capable of catalyzing a living polymerization reaction at a concentration of the complex below about 0. 1 mol %.

US Patent:

20070119302, May 31, 2007

Filed:

Nov 14, 2006

Appl. No.:

11/599111

Inventors:

Maciej Radosz - Laramie WY, US

International Classification:

B01D 53/22
B01D 59/12

US Classification:

096005000

Abstract:

Polymeric materials containing ionic groups, which can be used as membranes and sorbents for separating gas components, for example, separating COfrom flue gas streams and from natural gas streams, and sorbents for storing gas components. Such separation materials are used for pre-combustion separations, post-combustion separations, and natural gas separations, and are alternatives to the conventional amine absorption process.

US Patent:

20070224164, Sep 27, 2007

Filed:

Nov 14, 2006

Appl. No.:

11/599531

Inventors:

Maciej Radosz - Laramie WY, US
Youqing Shen - Laramie WY, US
Edward VanKirk - Laramie WY, US
William Murdoch - Laramie WY, US

International Classification:

A61K 31/765
C08F 20/00

US Classification:

424078370, 525438000

Abstract:

A nano-sized hydrogel is made of a water-soluble chain containing carboxylic acid moieties and polyethylene side chains. Such a nanogel is applicable as a cancer-drug delivery agent or an imagining agent, where either a cancer drug, such as cisplatin, or an imaging agent, such as Gd3+. The complexation of the cancer drug or the imaging agent with the carboxyl moieties leads to the hydrogel formation.

US Patent:

20080125559, May 29, 2008

Filed:

Nov 10, 2005

Appl. No.:

11/666900

Inventors:

Maciej Radosz - Laramie WY, US
Youqing Shen - Laramie WY, US
Huadong Tang - Laramie WY, US

International Classification:

C08F 30/06
C08G 79/08

US Classification:

526239, 528394

Abstract:

Polymerizable ionic liquid monomers and their corresponding polymers (poly(ionic liquid)s) are created and found to exhibit high absorption of radio frequency electromagnetic radiation, particularly in the microwave and radar bands. These materials are useful for coating objects to make them less reflective of radio frequency radiation and for making objects that absorb radio frequency radiation and are of minimal reflectivity to radio frequency radiation. Free-radical and condensation polymerization approaches are used in the preparation of the poly(ionic liquids).

US Patent:

20090156771, Jun 18, 2009

Filed:

Dec 17, 2007

Appl. No.:

11/958336

Inventors:

Youqing Shen - Laramie WY, US
Huadong Tang - Laramie WY, US
Maciej Radosz - Laramie WY, US

International Classification:

C08F 8/26
C07F 1/08

US Classification:

526319, 556110, 526346

Abstract:

Disclosed are new, highly active and versatile atom transfer radical polymerization (ATRP) catalysts. These catalysts catalyze ATRP for acrylates, methacrylates, and styrenes at surprisingly low concentrations. These catalysts mediated ATRP at a catalyst/initiator molar ratio at 0.005 and produced polymers with well-controlled molecular weights and low polydispersities. ATRP occurred even at a catalyst/initiator molar ratio as low as 0.001 with metal concentration in the produced polymers as low as 6-8 ppm. Amine-containing compounds, such as triethylamine, can significantly increase the catalyst activity of theses catalysts. The amine compounds can also used to the terminal halogen groups such as Br and Cl in the polymers prepared by ATRP.

US Patent:

20100152037, Jun 17, 2010

Filed:

May 11, 2007

Appl. No.:

12/304398

Inventors:

Maciej Radosz - Laramie WY, US
Youqing Shen - Laramie WY, US

International Classification:

C07C 43/20
B01J 20/22

US Classification:

502401, 568642, 977700

Abstract:

Novel brominated poly(2,6-diphenyl-1,4-phenylene oxide) compounds are synthesized and found to have improved carbon dioxide separation properties, including improved carbon dioxide permeability and improved carbon dioxide/nitrogen selectivity. silica filler

US Patent:

20100242728, Sep 30, 2010

Filed:

May 12, 2008

Appl. No.:

12/601374

Inventors:

Maciej Radosz - Laramie WY, US
Youqing Shen - Laramie WY, US

Assignee:

UNIVERSITY OF WYOMING - Laramie WY

International Classification:

B01D 53/02
B01D 53/12
B01D 53/46
B01J 20/20
C01B 31/08

US Classification:

95106, 95139, 95129, 95108, 95 95

Abstract:

A low-pressure multifunctional filter separates COand other air pollutants from flue, coal, natural and other gas mixtures. The separation agent is a solid carbon-rich sorbent, such as coke, charcoal, coal or activated carbon, that captures COand other air pollutants at lower temperatures and liberates them at higher temperatures. The sorbent is regenerated by heating with direct steam, hot COor other source of thermal energy. The recovered CO-rich product can be used for enhanced oil recovery, enhanced methane recovery, and subsequent storage in depleted oil and gas reservoirs.