Back to results
US 5,969,180 AGranted
Method for making bis-xylenols containing acid moieties
AssigneeGeneral Electric Company
InventorsGeert-Jan Willems, Juraj Liska
Life of this patent
Estimating the term…
Abstract
An improved method for the preparation of functionalized substituted bisphenol compound is provided. In particular, there is provided a method of making a functionalized substituted bisphenol compound of the formula: ##STR1## which comprises heating a mixture comprising a 2,6-dimethylphenol and levulinic acid in the presence of an effective amount of a macroreticular ion-exchange resin, optionally with removal of the water of reaction.
Claims10
A method of making a functionalized substituted bisphenol compound of the formula:
- ##STR9## which comprises heating a mixture comprising a phenol species of the formula:
- ##STR10## and a carboxylic acid-containing material of the formula:
- ##STR11## in the presence of a macroreticular ion exchange catalyst, wherein each R.sup.1 and R.sup.2 is independently hydrogen, halogen, primary or secondary lower alkyl, phenyl, or alkyl substituted phenyl, R.sup.3 is a hydrogen, primary or secondary lower alkyl, phenyl, or alkyl substituted phenyl, and n is on average from one to about twenty.
A method of making a functionalized substituted bisphenol compound of the formula:
- ##STR12## which comprises heating a mixture comprising a 2,6-dimethylphenol and levulinic acid in the presence of a macroreticular ion-exchange resin, optionally with removal of the water of reaction.
Dependencies are inferred from the claim text.