Process for inhibiting dihydric phenol degradation and color formation and composition thereof
AssigneeGeneral Electric Company
InventorGaylord M. Kissinger
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Abstract
A process which comprises the addition of a dihydric phenol degradation inhibiting and color inhibiting effective amount of a phosphite to a composition comprising a dihydric phenol, phenol, and isomers of the dihydric phenol, said addition occurring prior to a distillation procedure.
Claims12
A process which comprises the addition of a bisphenol-A degradation inhibiting and color inhibiting effective amount of a phosphite or a phosphonite to a composition comprising biophenol-H, phenol, and isomers of bisphenol-A, said addition occurring prior to a distillaton procedure, said amount of phosphite being from 0.01 to 0.3 wt% of the composition.
A composition comprising bisphenol-A, phenol and isomers of bisphenol-A in admixture with a bisphenol-A degradation inhibiting and color inhibiting effective amount of a phosphite or phosphonite of from 0.01 to 0.3 wt% of the composition.
The composition of claim 12 wherein the phosphonite is ##STR6## wherein R.sup.1, R.sup.2 and R.sup.3 are defined as in claim 10.
Dependencies are inferred from the claim text.