Polyacetals acetal exchange reactions

Polyacetals that have been examined for biomedical applications are often prepared by step or condensation polymerizations. Utilizing a diol monomer and an aldehyde to prepare a polymer requires removal of 1 equivalent of water per acetal (Figure 13.1). Acetal exchange reactions can be used where the small molecule is an alcohol with a lower boiling point than water... [Pg.220]

Polyacetals and polyketals are polyethers that form (1) through condensations of glycols with carbonyl compounds, (2) by exchange reactions of acetals or ketals, and (3) by additions of diols to dialkenes ... [Pg.324]

An acid-catalyzed exchange reaction of glycols and acetals yields polyacetals as follows n R-O-CH2-O-R + n HO-R -OH -[-0-CH2-0-R -] - + 2 ROH... [Pg.324]

An acid-catalyzed exchange reaction of glycols and acetals yields polyacetals as follows ... [Pg.460]

Big Chemical Encyclopedia