Low or no chlorine content poly(aryloxyphosphazene) copolymers useful for fireproof foams are surprisingly produced in a one step process without use of excess phenoxide reactant over a shorter than conventional time period by (a) adding linear (NPCl2)n to a mixture of phenoxides comprising alkali or alkaline earth metal phenoxide, alkylphenoxide and allylphenoxide in quantities such that the total of the phenoxides is the equivalent of the total chlorine atoms in the (NPCl2)n and allylphenoxide is present in an amount equivalent to from about 2% to about 10% of the chlorine atoms in the (NPCl2)n; and (b) reacting the admixture formed in step (a) at a temperature ranging from about 280°F. to about 320°F. for a time period ranging from about 7 hours to about 10 hours.
用于防火泡沫塑料的低
氯或无
氯含量聚芳基氧基
磷苯共聚物,竟然可以在不使用过量过氧化苯醚反应物的情况下,在比常规时间更短的时间内,通过以下方法一步制得:(a)将线性(NPCl2)n加入到由碱
金属或碱土
金属氧化
酚组成的氧化
酚混合物中;(b)将线性(NPCl2)n加入到由碱
金属或碱土
金属氧化
酚组成的氧化
酚混合物中、烷基
酚和烯丙基
酚的混合物中,使苯氧物的总量相当于 (NPCl2)n 中
氯原子的总量,而烯丙基
酚的含量相当于 (NPCl2)n 中
氯原子的约 2%至约 10%;(b) 将步骤(a)中形成的混合物在约 280°F.至约 320°F 的温度下反应约 7 小时至约 10 小时。