Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From phenol – phenol ether – or inorganic phenolate
Reexamination Certificate
2007-04-17
2007-04-17
Boykin, Terressa (Department: 1711)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From phenol, phenol ether, or inorganic phenolate
C528S125000, C528S198000, C568S385000, C585S467000, C585S469000
Reexamination Certificate
active
10897732
ABSTRACT:
A method for the manufacture of polycarbonate by combining methane and inlet water to produce methanol, converting the methanol to propylene, gasoline aromatics, and gasoline olefins, converting the propylene and gasoline olefins to hydrogen, first benzene, and toluene, reacting the first benzene with propylene to form cumene, reacting the cumene with oxygen to form cumene hydroperoxide, cleaving the cumene hydroperoxide to produce acetone and phenol, reacting the phenol, additional phenol, and acetone to produce a dihydric aromatic compound, and reacting the dihydric aromatic compound with a carbonate precursor to form polycarbonate.
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