Chemical Reactions on Polymers. II. Modification of Diene Polymers with Triazolinediones via the Ene Reaction

摘要: Abstract A wide variety of polymers and copolymers 1,3-dienes have been modified at low temperatures via the ene reaction with 4-substituted l,2,4-triazoline-3,5-diones. The resulting were characterized infrared spectroscopy, nuclear magnetic resonance, intrinsic viscosity, gel-permeation chromatography, differential scanning calorimetry, solubility tests, tensile measurements. Physical properties measurements support postulate that highly polar pendant urazole groups contribute inter molecular intramolecular hydrogen-bonding interactions thus impart to thermoplastic elastomer properties. Changes in character, thermal behavior, are accord this postulate. Since association between molecules is physical nature, remain soluble appropriate solvents. They also show dramatic decreases size; for example, average size o...