Organic compounds -- part of the class 532-570 series – Organic compounds – Oxygen containing
Patent
1978-04-17
1979-07-03
Morgenstern, Norman
Organic compounds -- part of the class 532-570 series
Organic compounds
Oxygen containing
203 6, 568702, 568723, 568724, 568727, 568728, C07C 3722
Patent
active
041601106
ABSTRACT:
A process is provided for improving the stability of bisphenols under melt or distillation conditions by employing an aromatic anhydride such as phthalic anhydride as a stabilizing agent. A reduction is effected in the rate of formation of phenol and other cracking products which are decomposition by-products of the bisphenol.
REFERENCES:
patent: 2672485 (1954-03-01), Menn et al.
patent: 3403186 (1968-09-01), Schlichting et al.
Cohen Joseph T.
General Electric Company
Morgenstern Norman
Teoli William A.
Watts Charles T.
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