HIGH MOLECULAR WEIGHT THERMOPLASTIC POLYURETHANES MADE FROM POLYOLS HAVING HIGH SECONDARY HYDROXYL CONTENT

摘要

Thermoplastic polyurethane compositions are prepared from polyols having high secondary hydroxyl content, diisocyanates, chain extenders and catalysts. The resulting polyurethanes have high molecular weight and can be prepared by a one-shot process wherein the reactants and any additional desired components are brought together and reacted simultaneously or substantially simultaneously.