Chemistry: electrical and wave energy – Processes and products – Processes of treating materials by wave energy
Patent
1990-01-29
1991-02-12
Anderson, Harold D.
Chemistry: electrical and wave energy
Processes and products
Processes of treating materials by wave energy
528176, 570185, 568726, 568722, C08G 6300, C07C 2200
Patent
active
049921517
ABSTRACT:
Inorganic and organic hypohalites are used to obtain good selectivity to alpha halogenation of alkyl aromatic compounds. Alkali and alkaline earth hypohalites must be used in conjunction with a phase transfer medium. Useful organic hypohalites are the tertiary alkyl hypohalites, which are employed in the presence of free radical generating media such as light or compounds which produce free radicals thermally. At least one mole of hypohalite reactant must be used for every alpha hydrogen in the alkyl aromatic compound.
A new bisphenol which contains biphenyl functionality has been made as well as an aromatic polyester derived therefrom.
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Richey W. Frank
St. George George M.
Walters Marlin E.
Anderson Harold D.
Mosley T.
The Dow Chemical Company
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