The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 23, 2013
Filed:
Feb. 24, 2010
Jean P. 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);
Jean P. 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);
Styron Europe GmbH, Horgen, CH;
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.