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

Table 6

Glass transition temperatures for blends of phosphorus esters of methyl 3,5-dihydroxybenzoate with DGEBA epoxy resin.

Additive	Additive level (wt%)	Phosphorus level (wt%)	(°C)
None	0	0	109
35DHB-DEP	7.1	1	126
35DHB-DEP	14.2	2	137
35DHB-DPP	10.2	1	119
35DHB-DPP	20.4	2	116
35DHB-DOPO	9.6	1	128
35DHB-DOPO	19.2	2	142