82. R. Pernice, M. Checchin, A. Moro, R. Pippa, Olefin or styrene (co)polymer, triazine polymer, ammonium phosphate and phosphorite, US Patent 5514743, assigned to Enichem, May 1996.
83. B.L. Kaul, Polytriazinyl compounds as flame retardants and light stabilizers, US Patent 8202924, assigned to MCA Technologies, June 19, 2012.
84. Enescu, D., Frache, A., Lavaselli, M., Monticelli, O., Marino, F., Novel phosphorous-nitrogen intumescent flame retardant system. Its effects on flame retardancy and thermal properties of polypropylene, Polym. Degrad. Stab., 98, 297, 2013.
85. Le Bras, M., Bourbigot, S., Felix, E., Pouille, F., Siat, C., Traisnel, M., Characterization of a polyamide 6-based intumescent additive for thermoplastic formulations, Polymer, 41, 5283, 2000.
86. Hoerold, S., Walz, R., Zopes, H.-P., Halogen-free additives meet rail standards, Reinforced Plast., 40, January 2000.
87. Reilly, T., Flame retarded thermoset materials based on phosphorus chemistry, Paper presented at annual meeting of Thermoset Resin Formulators Association (TRFA), Pittsburgh, PA, September 2009.
88. Ricciardi, M.R., Antonucci, V., Zarrelli, M., Giordano, M., Fire behavior and smoke emission of phosphate-based inorganic fire retarded polyester resin, Fire Mater., 36, 203, 2012.
89. Chen, Z., Jiang, M., Chen, Z., Chen, T., Yu, Y., Jiang, J., Preparation and characterization of a microencapsulated flame retardant and its flame-retardant mechanism in unsaturated polyester resins, Powder Technol., 354, 71, 2019.
90. Shih, Y.-F., Wang, Y.-T., Jeng, R.-J., Wei, K.-M., Expandable graphite systems for phosphorus-containing unsaturated polyesters. I. Enhanced thermal properties and flame retardancy, Polym. Degrad. Stab., 86, 339, 2004.
91. Yang, H., Liu, H., Jiang, Y., Chen, M., Wan, C., Density effect on flame retardancy, thermal degradation, and combustibility of rigid polyurethane foam modified by expandable graphite or ammonium polyphosphate, Polymers, 11, 668, 2019.
92. J.L. Clatty and D.L. McCalmon, Water-blown, flame retardant rigid polyurethane foam, PCT Patent Application WO 2007/075251, assigned to Bayer, July 5, 2007.
93. J.W. Rosthauser, Process for the production of medium density decorative molded foams having good fire retardant properties with reduced mold times, fire retardant compositions and foams produced by this process, US Patent 8097658, assigned to Bayer, January 17, 2012.
94. Meng, X.-Y., Ye, L., Zhang, X.-G., Tang, P.-M., Tang, J.-H., Ji, X., Li, Z.-M., Effects of expandable graphite and ammonium polyphosphate on the flame-retardant and mechanical properties of rigid polyurethane foams, J. Appl. Polym. Sci., 114, 853, 2009.
95. Hu, X.M. and Wang, D.M., Enhanced fire behavior of rigid polyurethane foam by intumescent flame retardants, J. Appl. Polym. Sci., 129, 238, 2013.
96. Li, J., Mo, X., Li, Y., Zou, H., Liang, M., Chen, Y., Influence of expandable graphite particle size on the synergy flame retardant property between expandable graphite and ammonium polyphosphate in semi-rigid polyurethane foam, Polym. Bull., 75, 5287, 2018.
97. Chen, X.-Y., Huang, Z.-H., Xi, X.-Q., Li, J., Fan, X.-Y., Wang, Z., Synergistic effect of carbon and phosphorus flame retardants in rigid polyurethane foams, Fire Mater., 42, 447, 2018.
98. Xing, W., Yuan, H., Zhang, P., Yang, H., Song, L., Hu, Y., Functionalized lignin for halogen-free flame retardant rigid polyurethane foam: preparation, thermal stability, fire performance and mechanical properties, J. Polym. Res., 20, 234, 2013.
99. Yao, W., Wang, H., Guan, D., Fu, T., Zhang, T., Dou, Y., The effect of soluble ammonium polyphosphate on the properties of water blown semirigid polyurethane foams, Adv. Mater. Sci. Eng., 2017, ID 5282869.
100. Lewin, M. and Endo, M., Catalysis of intumescent flame retardancy of polypropylene by metallic compounds, Polym. Adv. Technol., 14, 3, 2003.
101. Amigouet, P. and Shen, K., Talc/zinc borate: potential synergisms in flame retardant systems, in: Proc Flame Retardants 2006, pp. 155–162, Interscience Communication, London, 2006.
102. Bourbigot, S., Le Bras, M., Breant, P., Tremillon, J.-M., Delobel, R., Zeolites: new synergistic agents for intumescent fire retardant thermoplastic formulations - criteria for the choice of the zeolite, Fire Mater., 20, 145, 1996.
103. Scharf, D., Nalepa, R., Heflin, R., Wusu, T., Studies on flame retardant intumescent char: part I, Fire Saf. J., 19, 103, 1992.
104. Horrocks, A.R., Wang, M.Y., Hall, M.E., Sunmonu, F., Pearson, J.S., Polym. Int., 49, 1079, 2000.
105. Kandola, B.K. and Horrocks, A.R., Complex char formation in flame-retarded fiber/intumescent combinations: physical and chemical nature of char, Textile Res., J. 69, 374, 1999.
106. Kandola, B.K. and Horrocks, A.R., Complex char formation in flame-retarded fibre-intumescent combinations – IV. Mass loss and thermal barrier properties, Fire Mater., 24, 265, 2000.
107. Horrocks, R., Developments in flame retardants for heat and fire resistant textiles - the role of char formation and intumescence, Polym. Degrad. Stab., 54, 143, 1996.
108. M.P. Jones, J.D. Small, Jr., J.H. Walton, A.F. Baldwin, Jr., Z. Mikaelian, W.S. Kinlaw, Flame resistant filler cloth and mattresses incorporating same, US Patent 8513145, assigned to Precision fabrics, August 20, 2013.
109. Weil, E.D. and McSwigan, T., Melamine phosphates and pyrophosphates in flame retardant coatings: old products with new potential, J. Coating Technol., 66, 75, 1994.
110. Weil, E.D. and McSwigan, B., Melamine phosphate flame retardants, Plast. comp., p. 31, May–June 1994.
111. Costa, L., Camino, G., Luda di Cortemiglia, M.P., Mechanism of thermal degradation of fire-retardant melamine salts, in: Fire & Polymers, Am. Chem. Soc. Symposium Ser. 425, G. Nelson (Ed.), pp. 211–238, Washington, DC, 1990.
112. S. Imanishi, Flame retardant polyolefin resin composition, US Patent 6921783, assigned to Daicel, July 18, 2005.
113. Lai, X., Zeng, X., Li, H., Liao, F., Zhang, H., Yin, C., Preparation and properties of flame retardant polypropylene with an intumescent system encapsulated by thermoplastic polyurethane, J. Macromol. Sci., Phys., 51, 35, 2012.
114. Chen, X. and Jiao, C., Flame retardancy and thermal degradation of intumescent flame retardant polypropylene material, Polym. Adv. Technol., 22, 817, 2011.
115. Lai, X., Zeng, X., Li, H., Liao, F., Yin, C., Zhang, H., Synergistic effect between a triazine-based macromolecule and melamine pyrophosphate in flame retardant polypropylene, Polym. Compos., 33, 35, 2012.
116. Liu, S.-H., Kuan, C.-F., Kuan, H.-C., Shen, M.-Y., Yang, J.-M., Chiang, C.-L., Preparation and flame retardance of polyurethane composites containing microencapsulated melamine polyphosphate, Polymers, 9, 407, 2017.
117. T. Dave and W. Wehner, Triazine compounds containing phosphorous as flame retardants, US Patent 8754154, assigned to JM Huber, June 17, 2014.
118. H.-G. Koestler, T. Dave, W. Wehner, Flame protection agent compositions containing triazine intercalated metal phosphates, US Patent 9708538, assigned to JM Huber, July 18, 2017.
119. Mueller, P. and Schartel, B., Melamine poly(metal phosphates) as flame retardant in epoxy resin: performance, modes of action, and synergy J. Appl. Polym. Sci., 133, 43549, 2016.
120. T. Dave and W. Wehner, Triazine compounds containing phosphorous as flame retardants, US Patent 9200122, assigned to JM Huber, December 1, 2015.
121. M.T. Huggard and P.S. White, Flame retardant thermoplastic resin composition with intumescent flame retardant, US Patent 5137937, assigned to Rhodia, August 11, 1992.
122. Goin, C.L. and Huggard, M.T., AMGARD EDAP a new direction in fire retardants, in: Proc.