“…Phosphorous-based compounds are the most extensively used (H. Yang & C. Yang, 2005) (Gaan & Sun, 2007), (Wu & C. Yang, 2007), (Horrocks & Price, 2001). For natural fiber textiles, a number of studies focus on flame retardant property of cotton fabrics (Reddy et al, 2005), (Wu & C. Yang, 2006), (Tsafack & Levalois-Grützmacher, 2006) and silk fabrics (Achwal et al, 1987), (Kako & Katayama, 1995), (Guan et al, 2009). It was shown that a high level of flame retardancy could be achieved when silk fabric was treated by a reaction mixture of urea and phosphoric acid through pad/dry process (Achwal et al, 1987).…”