Process for obtaining halogenated diphenols
AssigneeGeneral Electric Company
InventorVictor Mark
Life of this patent
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Abstract
An improved process for obtaining halogenated diphenols which can be pure dihalodiphenols or predetermined, statistical mixtures comprising unreacted diphenol, monohalodiphenols and dihalodiphenols.
Claims7
A halogenated diphenol mixture having a significantly reduced quantity of trihalo substituted and tetrahalo substituted diphenol, said mixture containing predetermined, statistical quanities of unreacted diphenol, monohalodiphenol and dihalodiphenol, said halogenated diphenol being represented by the general formula ##STR9## wherein Xm and Xn are chlorine, bromine and mixtures thereof with the proviso that either Xm or Xn is chlorine;
- Y is independently selected from the group consisting of C.sub.1 -C.sub.4 alkyl and hydrogen;
- m and n are each 0-2 with the proviso that m+n equal at least 0.1, but no more than 2.0;
- and, W is --O--.
Dependencies are inferred from the claim text.