A guanidine phosphate composition containing both monoquanidine phosphate and diguanidine phosphate and characterized by a weight loss of less than 1% when heated for one hour at 220.degree. C. is prepared by mixing together about equimolar quantities of phosphoric acid and cyanoguanidine and heating this reaction mixture with agitation in the presence of a surfactant to a temperature in the range of 200.degree. C. to 240.degree. C. Agitation is continued for two hours at 200.degree. C. or until foaming stops (about one hour at 240.degree. C.). The guanidine phosphate composition so obtained may be applied to cellulosic materials to render them fire retardant.
制备含有单烷基
胍磷酸盐和双烷基
胍磷酸盐的
胍磷酸盐组合物,其在220°C加热1小时时的质量损失小于1%,方法为混合约等摩尔量的
磷酸和
氰基
胍,加入表面活性剂后在200°C至240°C的温度范围内加热并搅拌,200°C下继续搅拌两小时或直到起泡停止(240°C下约一小时)。得到的
胍磷酸盐组合物可以用于使
纤维素材料防火。