Keqing Fa Phones & Addresses
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3753 Arcadia Dr, Ann Arbor, MI 48108 (734) 585-5933
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Buffalo Grove, IL
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Tarrytown, NY
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Ardsley, NY
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Urbana, IL
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White Plains, NY
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Salt Lake City, UT
Publications
Us Patents
Superhydrophil Coating Compositions And Their Preparation
View pageUS Patent:
20090246536, Oct 1, 2009
Filed:
Jan 22, 2009
Appl. No.:
12/321542
Inventors:
Valentina Mitina - Tarrytown NY, US
Michael Chin - Oakland Gardens NY, US
Keqing Fa - Ardsley NY, US
Thomas Giesenberg - Oberwil, CH
Michael Chin - Oakland Gardens NY, US
Keqing Fa - Ardsley NY, US
Thomas Giesenberg - Oberwil, CH
International Classification:
B05D 3/10
B32B 17/06
B32B 15/04
B32B 9/04
B32B 17/06
B32B 15/04
B32B 9/04
US Classification:
428426, 427340, 428457, 4284111, 428689
Abstract:
A method is provided for preparing on the surface of a substrate a superhydrophilic layer containing at least one metal oxide which method comprises calcining at elevated temperatures a cross-linked precursor film in which film the metal oxide is evenly distributed and immobilized. The precursor film is prepared by sequentially applying to the surface of the substrate a polyamine or other cationic polymer, a suspension of metal oxide and then a suitable cross linking agent. The superhydrophilic layer can be applied as a coating to a variety of substrates including metal, glass and ceramic and provides excellent dirt resistance, scratch resistance and antifogging effect. Multi-layer systems are also available using the inventive process.
Method Of Forming Nanoscale Features Using Soft Lithography
View pageUS Patent:
20100028614, Feb 4, 2010
Filed:
Mar 9, 2007
Appl. No.:
12/281653
Inventors:
Anne Shim - Plainstow NH, US
John Rogers - Champaign IL, US
Feng Hua - Postdam NY, US
Keqing Fa - Urbana IL, US
Paul Bohn - Granger IN, US
John Rogers - Champaign IL, US
Feng Hua - Postdam NY, US
Keqing Fa - Urbana IL, US
Paul Bohn - Granger IN, US
International Classification:
B32B 3/30
B29C 59/00
B32B 3/10
B32B 5/16
B29C 59/00
B32B 3/10
B32B 5/16
US Classification:
428172, 264293, 4281951, 428206, 977750
Abstract:
The present invention provides a method of forming a molecular membrane using soft lithography. The method includes forming a pattern having at least one nanoscale feature in a moldable polymer composition and deploying at least a portion of the pattern adjacent a first substrate.
Low Temperature Cure Coating Formed Via Polarity-Facilitated Catalyst Migration Between Layers In A Double Layer Curing Mechanism
View pageUS Patent:
20200172758, Jun 4, 2020
Filed:
Jul 2, 2018
Appl. No.:
16/633253
Inventors:
- Münster, DE
Donald H. Campbell - Southfield MI, US
Timothy Clark - Kingston, CA
Adam Ozvald - Kingston, CA
Lisa Jean Harlow - Southfield MI, US
Kevin Michael Turley - Southfield MI, US
Keqing Fa - Wyandotte MI, US
Kristen Michel - Muenster, DE
Donald H. Campbell - Southfield MI, US
Timothy Clark - Kingston, CA
Adam Ozvald - Kingston, CA
Lisa Jean Harlow - Southfield MI, US
Kevin Michael Turley - Southfield MI, US
Keqing Fa - Wyandotte MI, US
Kristen Michel - Muenster, DE
International Classification:
C09D 175/12
C09D 5/00
C09D 133/00
C09D 5/00
C09D 133/00
Abstract:
A double coating, curing method, cured coating, and kit are provided. A first layer of the double coating can be a first cure coating composition, which has a first hydroxy-functional resin, a first crosslinking agent, and a non-polar catalyst. A second layer of a second cure coating composition can have a second hydroxy-functional resin, a second crosslinking agent, and a polar catalyst. The non-polar catalyst catalyzes crosslinking between the second hydroxy-functional resin and crosslinking agent, and not between the first hydroxy-functional resin and crosslinking agent. The polar catalyst catalyzes crosslinking between the first hydroxy-functional resin and crosslinking agent, and not between the second hydroxy-functional resin and crosslinking agent. The polarity of the catalysts can facilitate catalyst migration from one layer to the other. The separate compositions can be shelf-stable and/or the curing can occur at low temperature.