Chemistry of carbon compounds – Miscellaneous organic carbon compounds
Patent
1976-02-12
1981-04-07
Schain, Howard E.
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
260 457R, 260 458NT, 260 4595D, 260 4595C, C08K 513, C08K 534, C08K 552
Patent
active
042605377
ABSTRACT:
Polycarbonate resins which contain sufficient halogenated phenolic residues to impart fire retardant characteristics to articles molded therefrom are stabilized by the addition of a hindered phenol selected from the group consisting of a high molecular weight hindered phenol phosphate, a high molecular weight hindered phenol cyanurate, an ester of a hindered phenolic carboxylic acid and an alcohol having 10-26 carbon atoms, and the reaction of a hindered phenol and an aldehyde. The polycarbonates with the stabilizers of the invention exhibit improved melt flow stabilities and hydrolytic aging characteristics over conventionally stabilized polycarbonates and in most cases over unstabilized polycarbonates.
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Harsh Gene
Mobay Chemical Corporation
Pope Lawrence S.
Roy Thomas W.
Schain Howard E.
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