Stereoregular Copolymers of Methacrylic Acid and of Methyl Methacrylate

Different techniques and mechanisms of hydrolysis of isotactic, syndiotactic, and atactic PMMA are compared for over-all rates and reaction yields. A combined hydrolysis using a mixture of hydriodic and acetic acid gave the best results, and included the conservation of tacticity and size of the acid-ester copolymers obtained. These conclusions have been confirmed recently by several operators.