Organic compounds -- part of the class 532-570 series – Organic compounds – Oxygen containing
Reexamination Certificate
2006-01-10
2006-01-10
Richter, Johann (Department: 1621)
Organic compounds -- part of the class 532-570 series
Organic compounds
Oxygen containing
C568S386000, C568S396000, C568S397000, C568S411000, C568S749000, C568S754000, C568S798000, C585S440000
Reexamination Certificate
active
06984761
ABSTRACT:
A process is disclosed for producing α-methylstyrene, acetone, and phenol wherein the amount of α-methylstyrene produced may be controlled by selectively converting a portion of the cumene hydroperoxide to dimethyl phenyl carbinol, the hydrated form of α-methylstyrene. The dimethyl phenyl carbinol thus produced will lead to increased production of α-methylstyrene upon dehydration in the acid cleavage unit of the phenol plant. By controlling the fraction of the cumene hydroperoxide reduced to dimethyl phenyl carbinol, the amount of α-methylstyrene produced in the plant can be continuously set to meet the demand of the market for α-methylstyrene. Also disclosed is a non-acidic catalyst for reduction of cumene hydroperoxide.
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Levin Doron
Santiesteban Jose Guadalupe
Smith C. Morris
Vartuli James C.
ExxonMobil Chemical Patents Inc.
Richter Johann
Tyus Darryl M.
Witherspoon Sikarl A.
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