Esterification of carboxylate containing polymers
AssigneeE. I. Du Pont de Nemours and Company
InventorLewis E. Manring
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Abstract
A process for esterifying a polymer containing carboxyl(ate) groups, by maintaining the polymer at 0.degree. C. to 200.degree. C., where the counterion for the carboxylate groups is a selected ammonium or sulfoxonium ions. Such processes are useful for preparing improved films and coatings, particularly automotive coatings.
Claims13
A process for forming alkyl esters in polymers, comprising, maintaining a polymer containing carboxylate ions, whose counterions are esterifying ammonium or sulfoxonium ions at a temperature of about 0.degree.C. to about 200.degree. C., and in the substantial absence of water and other solvents capable of string hydrogen bonding, and provided that said ammonium or sulfoxonium ions are substantially stable in the presence of water.
Dependencies are inferred from the claim text.