Some Effects of Molecular Structure on the Production of Flexible Urethane Foams

Abstract

Modifications to the chemical nature of polyols, catalysts, and surfactants which give easier foaming conditions are presented. Two new series of activated polyols are described. Their surface-active properties, efficiency as co-solvents for urethane inter mediates, and gelation rates are discussed and means of separating the control of these phenomena outlined. Results are given on the use of a number of new catalyst and surfac tant systems, some of which have shown out standing promise, particularly in the areas where catalyst balance has previously been difficult. Formulations and physical properties of the foams produced are presented and discussed.