Stationary copolymerization of formaldehyde and 1,3‐dioxolan

Abstract

A. study on the kinetics of gas‐phase copolymerization of formaldehyde and 1,3‐dioxolan effected by stannic chloride in a flow reactor with ideal mixing is reported. Equations were calculated describing the run of process depending on the composition of the outgoing flow measured with a gas chromatograph. It was established that the reaction takes place under stationary conditions. The change of the degree of conversion of monomers, and composition of the stable portion of the copolymer, and copolymer molecular weight with catalyst concentration was examined. It was shown that a kinetic and diffusion area may be possible. A product of high molecular weight and thermostability was obtained. The molecular size distribution was ascertained to be close to the exponential type. The average number of blocks and units of both monomers was calculated. Different posteffects for the two reacting substances were found.