Rigid Urethane Foams Based on Sorbitol Derivatives

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Science  28 Nov 1958:
Vol. 128, Issue 3335, pp. 1343
DOI: 10.1126/science.128.3335.1343


Present commercial rigid foams are based on polyester raw materials. It has now been demonstrated that certain hydroxyl-terminated polyethers can be used satisfactorily as a major component of rigid urethane foams. These polyethers are hexafunctional materials prepared by reacting propylene oxide with sorbitol.