Distillation: processes – separatory – With measuring – testing or inspecting – Of temperature or pressure
Reexamination Certificate
2006-10-31
2006-10-31
Manoharan, Virginia (Department: 1764)
Distillation: processes, separatory
With measuring, testing or inspecting
Of temperature or pressure
C203S003000, C203S018000, C203S077000, C203S080000, C203SDIG016
Reexamination Certificate
active
07128814
ABSTRACT:
The present invention relates to a process for separating 2-butanol from tert-butanol/water by adding of tert-butanol such that the water concentration lowers to less than the limit concentration of the distillation boundary line connecting the two azeotropes TBA/water and SBA/water and is subsequently worked up by distillation.
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Office Action as received in corresponding Chinese Application No. 200310120350.3 dated Apr. 7, 2006 w/English Translation.
Li Fengyun, Journal of Fushun Petroleum College, 18(4): 28-30 w/English Abstract.
Guo Yufeng et al, Petrochemical Technology and Application, 17(2):114-117 w/English Abstract.
Database Chemabs 'Online! Chemical Abstracts Service, Columbus, Ohio, US; Inashima, Makoto et al: “Purification of a crude tert-butyl alcohol” XP002279771 gefunden im STN—Database accession No. 1975:605762 “Zusammenfassung” & JP 500 163 39B B4 (Maruzen Oil Company, Ltd., Japan) Jun. 1975 (Jun. 12, 1975).
Beckmann Andreas
Reusch Dieter
Manoharan Virginia
OXENO Olefinchemie GmbH
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