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US 4,474,999 AGranted
Phenol compounds, process and polymers
AssigneeGeneral Electric Company
InventorsVictor Mark, Charles V. Hedges
Life of this patent
Estimating the term…
Abstract
This invention relates to phenolic compounds that have utility as branching agents for the manufacture of randomly branched polycarbonates.
Claims5
A tetraphenolic compound of the formula:
- ##STR7## wherein X.sup.1, X.sup.2, X.sup.3, X.sup.4, Y.sup.1, Y.sup.2, Y.sup.3, and Y.sup.4, are independently selected from hydrogen, chlorine, bromine, and alkyl of from 1 to 6 carbon atoms or aryl.
Dependencies are inferred from the claim text.