Invention Grant
- Patent Title: Purification of phenyl ester salts
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Application No.: US09871695Application Date: 2001-06-04
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Publication No.: US06527690B2Publication Date: 2003-03-04
- Inventor: Bhaskar Krishna Arumugam , Michael Eugene Burns , Dimmick Lee Bymaster , Jeffrey Scott DuPont , Robert Richard Dykstra , Robert Lee Eagan , Eddie Joseph Eckart , Jarvey Eugene Felty, Jr. , Kevin John Fontenot , Jeffrey William Green , Shane Kipley Kirk , Gary Paul Lutz , Tony Lee Sander , Thomas Hugh Williams , George Chester Zima
- Applicant: Bhaskar Krishna Arumugam , Michael Eugene Burns , Dimmick Lee Bymaster , Jeffrey Scott DuPont , Robert Richard Dykstra , Robert Lee Eagan , Eddie Joseph Eckart , Jarvey Eugene Felty, Jr. , Kevin John Fontenot , Jeffrey William Green , Shane Kipley Kirk , Gary Paul Lutz , Tony Lee Sander , Thomas Hugh Williams , George Chester Zima
- Main IPC: C07C23100
- IPC: C07C23100

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.
Public/Granted literature
- US20020128505A1 Purification of phenyl ester salts Public/Granted day:2002-09-12
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