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http://dx.doi.org/10.12925/jkocs.2007.24.3.10

Synthesis of Modified Polyesters Containing Triphosphorus for Flame-Retardant Coatings  

Park, Hong-Soo (Department of Chemical Engineering, Myongji University)
Yoo, Gyu-Yeol (Department of Chemical Engineering, Myongji University)
Kim, Ji-Hyun (Department of Chemical Engineering, Myongji University)
Kim, Young-Geun (Korea Institute of Construction Materials)
Publication Information
Journal of the Korean Applied Science and Technology / v.24, no.3, 2007 , pp. 287-295 More about this Journal
Abstract
Three phosphorus functional groups were introduced in one structural unit of polymer backbone to enhance the flame retardancy of PU coatings. In the first step, we synthesized tetramethylene bis(orthophosphate) (TBOP) that contained two phosphorus functional groups in one structural unit. In the next step, we synthesized modified polyesters (ATBTP-10C, -20C, -30C) that contained triphosphorus group using TBOP, 1,4-butanediol, trimethylolpropane, adipic acid, and another functional monomer, phenylphosphonic acid (PPA). The amount of PPA in ATBTPs was adjusted from 10 wt% to 30 wt%. The structure and characteristics of ATBTPs were examined using FT-IR, NMR, GPC, and TGA analysis. From the thermo-behavior test of diphosphorus modified polyester (ATBT) and ATBTPs, the afterglow of ATBT, ATBTP-10C, ATBTP-20C, and ATBTP-30C were 24.7, 27.1, 29.0, and 31.7%, respectively. It was found from this result that the afterglow increased with the amount of PPA component.
Keywords
triphosphorus modified polyester; TGA analysis; afterglow;
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