Tube Structure with Sol-Gel Zirconia Coating

Number of patents in Portfolio can not be more than 2000

United States of America Patent

APP PUB NO 20090250349A1
SERIAL NO

12463156

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Abstract

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The subject invention concerns zirconia-based hybrid organic-inorganic sol-gel coating for optional use as a stationary phase in capillary microextraction (CME), gas chromatographic (GC), high performance liquid chromatography (HPLC), capillary electrophoresis (CE), capillary electrochromatography (CEC) and related analytical techniques. Sol-gel chemistry is employed to chemically bind a hydroxy-terminated silicone polymer (polydimethyldiphenylsiloxane, PDMDPS) to a sol-gel zirconia network. In one embodiment, a fused silica capillary is filled with a properly designed sol solution to allow for the sol-gel reactions to take place within the capillary. In the course of this process, a layer of the evolving hybrid organic-inorganic sol-gel polymer becomes chemically bonded to the silanol groups on the inner capillary walls. The unbonded part of the sol solution is expelled from the capillary under helium pressure, leaving behind a chemically bonded sol-gel zirconia-PDMDPS coating on the inner walls of the capillary. Polycyclic aromatic hydrocarbons, ketones, and aldehydes are efficiently extracted and preconcentrated from dilute aqueous samples followed by GC separation of the extracted analytes.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Alhooshani, Khalid Temple Terrace , US 3 15
Malik, Abdul Tampa , US 25 227

Cited Art Landscape

Patent Info (Count) # Cites Year
 
Other [Check patent profile for assignment information] (2)
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* 2007/0062,874 High efficiency sol-gel gas chromatography column 5 2006
 
QUEEN'S UNIVERSITY AT KINGSTON (1)
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McDonnell Douglas Corporation (1)
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Capillary Technology Corporation (1)
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Media and Process Technology, Inc. (1)
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W. R. GRACE & CO.-CONN. (1)
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UNIVERSITY OF WATERLOO (1)
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GLOBALFOUNDRIES INC. (1)
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PALL CORPORATION (1)
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NORWEST BUSINESS CREDIT, INC. (1)
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THE RESEARCH FOUNDATION OF STATE UNIVERSITY OF NEW YORK (1)
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THE FOXBORO COMPANY (1)
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Istututo Guido Donegani S.p.A. (1)
* 5270027 Process of preparing high-porosity silica xerogels using alkanolamines 30 1992
 
SANDIA CORPORATION (1)
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SIGMA-ALDRICH CO. (1)
* 5192406 Deactivated capillary columns for use in capillary electrophoresis 14 1991
 
UNIVERSITY OF SOUTH FLORIDA (10)
* 6759126 Solid phase microextraction fiber structure and method of making 16 2001
* 6783680 Sample preconcentration tubes with sol-gel surface coatings and/or sol-gel monolithic beds 21 2001
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MERCK PATENT GMBH (1)
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Associated Universities, Inc. (1)
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YISSUM RESEARCH DEVELOPMENT COMPANY OF THE HEBREW UNIVERSITY OF JERUSALEM (1)
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* Cited By Examiner

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9259708 Device and method for enhanced collection and assay of chemicals with high surface area ceramic 0 2012
 
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