Poly(amide‐acetals) and poly(ester‐acetals) from polyol acetals of methyl 9(10)‐formylstearate: Preparation and physical characterization

Abstract

AbstractCondensation polymers were prepared from the pentaerythritol acetal of methyl 9(10)‐formylstearate by reaction with diamines and with ethylene glycol. The glycerol acetal was self‐condensed to a poly(ester‐acetal) and also copolymerized with caprolactam. A novel step growth, addition polymerization was carried out with ethylene bis[9(10)‐methoxymethylenesterate] and pentaerythritol. Physical and spectral (infrared and nuclear magnetic resonance) properties of the various products were determined. In general, the long C8–C9 side chains in the polymers of the pentaerythritol acetal of methyl 9(10)‐formylstearate reduced crystallinity to such a degree that, unlike polymers from methyl azelaaldehydate pentaerythritol acetal, they were soluble in the more ordinary solvents, e.g., chloroform and tetrahydrofuran.