HYDROPHILIC-HYDROPHOBIC THERMALLY REVERSIBLE POLYMERIC COMPOUND AND PRODUCTION THEREOF

摘要

PURPOSE:To provide the subject polymer having a specific mol.wt., reversibly changing into a water-soluble polymer at low temperatures and into a water- insoluble polymer at high temperatures and useful as a temperature sensor, etc., by radically polymerizing N-(2-methoxyethyl)-N-isopropylacrylamide. CONSTITUTION:N-(2-Methoxyethyl)-N-isopropylacrylamide of formula I prepared e.g. by reacting acryloyl chloride with N-(2-methoxyethyl)-isopropylamine in the presence of triethylamine is polymerized in the presence of a radical polymerization initiator such as azobisisobutyronitrile in a medium such as methanol at 60 deg.C for approximately 8hr to provide the objective polymer comprising repeating units of formula II and having a mol.wt. corresponding to an intrinsic viscosity [eta] of 0.01-6.0 at 27 deg.C in a tetrahydrofuran solution.