Synthesis and Properties of Novel Flame Retardant Poly(butylene terephthalate)

Jong Min Park; Yun Heum Park

Macromolecular Research, Vol.13, No.2, 128-134, April, 2005

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Synthesis and Properties of Novel Flame Retardant Poly(butylene terephthalate)

Jong Min Park^{1, 2}, and Yun Heum Park^{1, 3, †}

¹School of Applied Chemistry and Chemical Engineering, Sungkyunkwan University, 300 Cheoncheon, Jangan, Suwon 440-746, Korea
²KOLON Central Research Park, 207-2 Mabuk, Guseong, Yongin 449-797, Korea
³Hyperstructured Organic Research Center, Seoul 151-744, Korea

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The phosphorus comonomer [(6-oxido-6H-dibenz<1,2>oxaphosphorin-6-yl)methyl]-methyl butanedioate (DOP-MBDA) was synthesized through the addition reaction of dimethyl itaconate (DMI) with 9,10-dihydro-9-oxa-10-phosphaphenan threne-10-oxide (DOP). A series of novel flame retardant poly(butylene terephthalate)s (PBTs) containing different amounts of phosphorus were prepared using DOP-MBDA as a comonomer. These novel polymers were characterized by 1H-NMR, IR, and differential scanning calorimetry (DSC). The novel phosphoruscontaining poly(butylene terephthalate)s, referred to as FR-PBTs, exhibited interesting thermal and mechanical behavior, as well as superior flame retardancy. These properties are attributed to the effect of incorporating the rigid structure of DOP-MBDA and the pendant phosphorus group into the poly(butylene terephthalate) (PBT) homopolymer.The UL 94-V2 rating could be achieved with this novel flame retardant PBT, which has a phosphorus content as low as 0.5 wt%, and the FR-PBTs emitted less fumes and toxic gases than the PBT homopolymer.

Keywords:copolymerization;flame retardance;polyesters;phosphorus monomers

[References]

Hoechst AG, US Patent, 3.941.752 (1992)
Hoechst AG, US Patent, 4.033.936 (1977)
Toyobo Co. Ltd., Germany Patent, 2.646.218 (1977)
Wang CS, Shieh JY, Sun YM, Eur. Polym. J., 35, 1465 (1999)
Chang SJ, Sheen YC, Chang RS, Chang FC, Polym. Degrad. Stabil., 54, 365 (1996)
Derouet D, Morvan F, Brosse JC, J. Appl. Polym. Sci., 62(11), 1855 (1996)
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Kim JY, Seo ES, Kim SH, Kikutani T, Macromol. Res., 11(1), 62 (2003)
Levchik SV, Levchik GF, Balabanovich AI, Weil ED, Klatt M, Angew. Makromol. Chem., 264, 48 (1998)
Levchik GF, Grigoriev YV, Balabanovich AI, Levchik SV, Klatt M, Polym. Int., 49, 1095 (2000)
Chemicals LG, KP Patent, 0231063 (1999)
Yu J, Zhou D, Chai W, Lee B, Lee SW, Yoon J, Ree M, Macromol. Res., 11(1), 25 (2003)
Aufmuth W, Levchik SV, Levchik GF, Klatt M, Fire Mater., 23, 1 (1999)
Nelson GL, Fire and Polymers: Materials and Tests for Hazard Prevention, ACS, Washington D. C. (1995)
Kuryla WC, Papa AJ, Flame Retardancy of Polymeric Materials, Marcel Dekker, New York, 1975, vol. 3.

[Referenced By]

[Related Articles]

[1] Hoechst AG, US Patent, 3.941.752 (1992)

[2] Hoechst AG, US Patent, 4.033.936 (1977)

[3] Toyobo Co. Ltd., Germany Patent, 2.646.218 (1977)

[4] Wang CS, Shieh JY, Sun YM, Eur. Polym. J., 35, 1465 (1999)

[5] Chang SJ, Sheen YC, Chang RS, Chang FC, Polym. Degrad. Stabil., 54, 365 (1996)

[6] Derouet D, Morvan F, Brosse JC, J. Appl. Polym. Sci., 62(11), 1855 (1996)

[7] Maiti S, Banerjee S, Palit SK, Prog. Polym. Sci, 18, 227 (1993)

[8] Kim JY, Seo ES, Kim SH, Kikutani T, Macromol. Res., 11(1), 62 (2003)

[9] Levchik SV, Levchik GF, Balabanovich AI, Weil ED, Klatt M, Angew. Makromol. Chem., 264, 48 (1998)

[10] Levchik GF, Grigoriev YV, Balabanovich AI, Levchik SV, Klatt M, Polym. Int., 49, 1095 (2000)

[11] Chemicals LG, KP Patent, 0231063 (1999)

[12] Yu J, Zhou D, Chai W, Lee B, Lee SW, Yoon J, Ree M, Macromol. Res., 11(1), 25 (2003)

[13] Aufmuth W, Levchik SV, Levchik GF, Klatt M, Fire Mater., 23, 1 (1999)

[14] Nelson GL, Fire and Polymers: Materials and Tests for Hazard Prevention, ACS, Washington D. C. (1995)

[15] Kuryla WC, Papa AJ, Flame Retardancy of Polymeric Materials, Marcel Dekker, New York, 1975, vol. 3.