WALTER D LEATHERWOOD
Electrician at Magnolia St, Richwood, TX
License number
Texas 9714
Expiration Date
Apr 6, 2017
Category
Journeyman Electrician
Address
Address
112 S Magnolia St, Richwood, TX 77566
Phone
(979) 238-1390
Professional information
Method For Monitoring Monomer Concentration In Interfacial Polycarbonate Manufacturing Process
US Patent:
2012004, Feb 16, 2012
Filed:
Feb 24, 2010
Appl. No.:
13/254062
Inventors:
Jean Chauvel, JR. - Lake Jackson TX, US
John O. Osby - Lake Jackson TX, US
Wenzel P. Bartlett - Clute TX, US
Serena K. Stephenson - Lake Jackson TX, US
John S. Hanson - Angleton TX, US
Jeffery S. Bradley - Missouri City TX, US
Walter D. Leatherwood - Lake Jackson TX, US
Rajesh P. Paradkar - Lake Jackson TX, US
Thoi H. Ho - Lake Jackson TX, US
John O. Osby - Lake Jackson TX, US
Wenzel P. Bartlett - Clute TX, US
Serena K. Stephenson - Lake Jackson TX, US
John S. Hanson - Angleton TX, US
Jeffery S. Bradley - Missouri City TX, US
Walter D. Leatherwood - Lake Jackson TX, US
Rajesh P. Paradkar - Lake Jackson TX, US
Thoi H. Ho - Lake Jackson TX, US
International Classification:
C08G 64/24
US Classification:
526 60
Abstract:
The present invention relates to an improved process for online measurement of monomer concentration, specifically bisphenol A, in an interfacial polycarbonate manufacturing process. Wherein the measurement is obtained by vibrational spectroscopy for the purpose of improving process control, specifically, controlling the carbonate polymer molecular weight.