Several N-substituted diisopropanolamines were prepared by reacting aqueous solutions of amines with excess propylene oxide at ordinary pressure but higher N-substituted diisopropanolamines had to be prepared in an autoclave at 200 °C. The ionization constants of these bases were measured and recorded as pKa values. Their infrared absorption spectra gave bands common to all diisopropanolamines mainly at 3.04, 7.14, 7.55, 7.85, 9.45, 10.6, and 11.95 microns. Their condensation with sebacic acid gave the corresponding polyesters, which were soluble in strong acids and had molecular weights of about 1500. The hydroxyl-terminated polyesters were cured with a slight excess of 2,4-tolylene diisocyanate at 100 °C for 2 days to yield elastomers of brittle temperatures in the region of −50 °C.
通过在常压下,将胺的水溶液与过量的丙烯氧基反应,制备了几种N-取代二异丙醇胺。但是,较高的N-取代二异丙醇胺必须在200°C的高压釜中制备。这些碱的解离常数被测量并记录为pKa值。它们的红外吸收光谱显示出所有二异丙醇胺共有的频带,主要在3.04、7.14、7.55、7.85、9.45、10.6和11.95微米处。它们与癸二酸的缩聚产物是相应的聚酯,溶解在强酸中,分子量约为1500。羟基终止的聚酯在100°C下与轻微过量的2,4-甲苯二异氰酸酯固化2天,形成具有脆性温度在-50°C左右的弹性体。