3-Hydroxy-2,2-dimethylpropanoic acid, 3-hydroxy-2,2-dimethylpropyl ester, epsilon-carprolactone polymer 70776-82-8 Propanoic acid, 3-hydroxy-2,2-dimethyl-, 3-hydroxy-2,2-dimethylpropyl ester, polymer with 2-oxepanone