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:
Mar. 04, 2003
Filed:
Jun. 04, 2001
Bhaskar Krishna Arumugam, Kingsport, TN (US);
Michael Eugene Burns, Hamilton, OH (US);
Dimmick Lee Bymaster, Batesville, AR (US);
Jeffrey Scott DuPont, Cincinnati, OH (US);
Robert Richard Dykstra, Cleves, OH (US);
Robert Lee Eagan, Kingsport, TN (US);
Eddie Joseph Eckart, Batesville, AR (US);
Jarvey Eugene Felty, Jr., Gray, TN (US);
Kevin John Fontenot, Kingsport, TN (US);
Jeffrey William Green, Batesville, AR (US);
Shane Kipley Kirk, Church Hill, TN (US);
Gary Paul Lutz, Richmond, VA (US);
Tony Lee Sander, Louisville, KY (US);
Thomas Hugh Williams, Fall Branch, TN (US);
George Chester Zima, Kingsport, TN (US);
Other;
Abstract
The invention relates to a process for purifying and decolorizing a phenyl ester salt. The process combines a phenyl ester salt with a solvent to form a mixture and then stirs the mixture to form a slurry. The phenyl ester salt is substantially insoluble in this solvent. The process then collects the phenyl ester salt from the slurry. The collected phenyl ester salt may then be optionally dried or recrystallized. The collected phenyl ester salt is dissolved in a solvent to form a solution. The solution is decolorized and then spray dried to form a powder of the phenyl ester salt. As a result of the process the phenyl ester salt powder has a higher purity and an improved color as compared to the starting phenyl ester salt.