摘要：

Soluble poly(2,2-diethoxyethyl methacrylate) (1a) was prepared by radical polymerization in solution. Copolymers from 2,2-diethoxyethyl methacrylate (3a) , 2-hydroxyethyl methacrylate (4) and ethylene dimethacrylate (5) were prepared by suspension polymerization in the form of crosslinked beads (50–220 μm in diameter, specific surface area up to 38 m 2 /g). Acetal groups of these polymers resist direct hydrolysis, but can be transacetalized. Soluble poly(3,3-diethoxypropyl methacrylate) (1b) was prepared by radical polymerization in solution. Copolymers with 4 and 5 were prepared by suspension polymerization in the form of crosslinked beads (30 – 140 μm in diameter; specific surface area up to 46 m 2 ). The polymers readily under go quantitative transcacetalization. Soluble poly(2-formylethyl methacrylate) (8) was prepared by radical polymerization in solution. Copolymers of 2-formylethyl methacrylate (7) with 4 and 5 were prepared by suspension polymerization in the bead form (diameter 75 – 350 μm; specific surface area up to 128 m 2 /g). The aldehyde group of these polymers is sensitive to oxidation in air. The content of aldehyde groups was measured spectrometrically and by reaction with 1,2-ethanedithiol.

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