1‐Dopyl‐1,2‐(4‐hydroxyphenyl)ethene has been converted to phosphorus diesters, 1‐dopyl‐1,2‐(4‐diphenylphosphatophenyl)ethene (BDE‐DPP), and 1‐dopyl‐1,2‐(4‐dopyloxyphenyl)ethene (BDE‐DOPO) which have been fully characterized using spectroscopic and thermal methods and assessed as flame retardants in DGEBA epoxy (diglycidyl ether of bisphenol A). Both are effective flame retardants. The ester containing diphenylphosphato groups (BDE‐DPP) acts primarily in the condensed phase while that containing only dopyl units acts predominately in the gas phase. DGEBA epoxy containing sufficient 1‐dopyl‐1,2‐(4‐dopyloxyphenyl)ethene to provide 2% phosphorus displays a limiting oxygen index of 28, a peak heat release rate of 506 W/g, and a total heat release of 24 kJ/g.

中文翻译：

---

1-dopyl-1,2-（4-羟基苯基）乙烯的磷酸酯作为聚合物的有效阻燃剂

1-Dopyl-1,2-（4-羟苯基）乙烯已被转化为磷二酯，1-dopyl-1,2-（4-diphenylphosphatophenyl）ethene（BDE-DPP）和1-dopyl-1,2-PP （4-二氧戊氧基苯基）乙烯（BDE-DOPO）已通过光谱和热方法进行了充分表征，并被评估为DGEBA环氧（双酚A的二缩水甘油醚）中的阻燃剂。两者都是有效的阻燃剂。含二苯基磷酸根基团的酯（BDE-DPP）主要在缩合相中起作用，而仅含多丙基单元的酯则在气相中主要起作用。DGEBA环氧化合物含有足够的1-dopyl-1,2-（4-dopyloxyphenyl）乙烯以提供2％的磷，极限氧指数为28，峰值放热速率为506 W / g，总放热为24 kJ /G。