Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From phenol – phenol ether – or inorganic phenolate
Patent
1994-03-18
1995-09-26
Michl, Paul R.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From phenol, phenol ether, or inorganic phenolate
528125, 528126, 528174, 528220, 528228, 528272, 528288, 528289, 528290, 528295, 528308, 525535, 525537, 525540, 540131, C08G 802, C08G 7500
Patent
active
054534828
ABSTRACT:
Provided is a new process useful for preparing arylsulfonyl halides, which comprises the addition or drowning of halosulfonation reaction products, produced by the reaction of aromatic compounds (arenes), with excess halosulfonic acid, into C.sub.3 -C.sub.6 aliphatic ketones, preferably acetone, isopropyl alcohol, or mixtures thereof, instead of drowning into water as is known in the art of aromatic sulfonyl chloride preparation. Less heat of reaction is observed, thus making the drowning of the halosulfonation reaction mixture safer and more controllable. Further, less hydrogen chloride gas is evolved from the drowning mixture and generally more highly pure arylsulfonyl chlorides are produced.
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Chamberlin Kim S.
Krutak James J.
Parham William W.
Weaver Max A.
Eastman Chemical Company
Graves, Jr. Bernard J.
Gwinnell Harry J.
Hampton-Hightower P.
Michl Paul R.
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