Filed: Mar 31, 1977

Published: Dec 19, 1978

Abstract

The invention relates to polymers and copolymers of pivaloyloxyalkyl methacrylates which contain structural units of the general formula IMAGE where R1 is (CH2)n1-O (n1 = 2 to 10) or (CH2CH2-O)n2 (n2 = 1 to 4) and to the method of their preparation and modification. The polymerization and copolymerization can be initiated by free-radical initiators of the peroxy type or by anionic initiators, e.g., alkali metal alkoxides or butyllithium, and carried out in a solution, bulk or suspension process in the presence of a crosslinking agent or without it. Anionic polymerization may result in stereoregular polymers or may be used for preparation of block copolymers by the "living" polymer technique. The polymers and copolymers can be modified by the partial or toal conversion of the pivaloyloxyalkyl methacrylate units into hydroxyalkyl methacrylate units by selective hydrolysis, alcoholysis or other reaction.

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Classification Codes

C08F20/28, C08F297/02, C08F297/00, C08F8/00, C08F20/00, C08F8/12