Tetrahydrofuran polymers of viscosity suited to polyurethane (e.g. spinning solution) production is obtained by adding a linear aliphatic ether to the polymerization mixture

摘要

A linear aliphatic ether is present at 0.001-5 wt.% in the reaction mixture when polytetrahydrofuran or a tetrahydrofuran (THF) copolymer is produced by polymerization of THF with an acid catalyst in presence of a telogen and/or a comonomer.