Base hydrolysis of pendant amide polymers
AssigneeDynapol
InventorsDaniel J. Dawson, Phillip J. Brock
Life of this patent
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Abstract
Pendant amide polymers, especially polymers containing N-vinylacetamide, N-alkyl-N-vinylacetamide, or N-vinyl-formamide units, are hydrolyzed to pendant amine polymers, especially vinylamine polymers by contact with strong aqueous base at elevated temperature.
Claims10
The process of treating a polymer having recurring pendant amide units having a structure selected from among ##STR5## wherein R is a lower alkyl to form pendant amine units which comprises contacting said polymer in liquid phase with aqueous strong base at elevated temperature for a time effective to hydrolyze said amide units to amine units.
The process of hydrolyzing poly(N-vinylacetamide) to poly(vinylamine) which comprises intimately contacting 7 to 15% by weight of said polymer with from 1.1 to 1.5 equivalents of NaOH in an aqueous reaction medium at a temperature of from 145.degree. C. to 165.degree. C. for from 3 to 12 hours.
Dependencies are inferred from the claim text.