| 摘要 |
1,201,097. Nitrogen-containing phosphorus compounds, chloro - chloroalkyl phosphates. NAPHTACHIMIE. 24 Oct., 1967 [25 Oct., 1966], No. 48324/67. Heading C2C. [Also in Division C3] Nitrogen-containing phosphorus compounds suitable for the production of polyurethanes are prepared by reacting a chloro-chloroalkyl phosphate, having an average of from 0À5 to 2À5 chlorine atoms attached directly to each phosphorus atom, with a primary or secondary amine, having one or more functional groups capable of reacting with an organic isocyanate, at a temperature of from 0‹ to 100‹ C. in the presence of a molar quantity of propylene oxide at least equal to the molar quantity of hydrochloric acid formed during the reaction, the number of molecules of amine being substantially equal to the number of chlorine atoms attached directly to phosphorus atoms in the chloro-choloroalkyl phosphate, and then distilling the mixture thus produced under vacuum. Specified amines are mono- and dialkanolamines such as mono- and di-ethanolamines, mono- and di-propanolamines, diprimary or di-secondary diamines such as ethylene diamine and diethylene diamine or mixtures comprising two or more of these compounds. The hydrochloric acid formed during during the course of the reaction reacts with the propylene oxide to produce propyleneglycol chlorohydrin, which with any excess of propylene oxide can be easily eliminated by distillation under vacuum at a temperature which may be up to 100‹ C. A chloro-chloroalkyl phosphate is prepared by reacting phosphorus oxychloride with ethylene oxide and/or propylene oxide at a temperature of from 0‹ to 100‹ C. in the presence of a catalyst such as pyridine or phosphorus trichloride. |
