Phosphorus Flame Retardants for Polymeric Materials from Gallic Acid and Other Naturally Occurring Multihydroxybenzoic Acids

Table 3

Glass transition temperatures for blends of phosphorus esters of gallic acid anilide with DGEBA epoxy resin.

Blend	Phosphorous level (%)	Additive by weight (%)	(°C)
DGEBA epoxy	0	0	110
GA-DEP-E	1	7.5	129
	2	14.0	148
GA-DOPO-E	1	9.6	145
	2	19.1	142