Citation:
ZHANG Tian-Yong, ZENG Miao, YOU Lan-Ying, ZHANG You-Lan, YUAN Zhong-Fei. Preparation of Flame Retardant ATBS Accelerated by Surfactants[J]. Chinese Journal of Applied Chemistry,
;2007, 24(6): 644-647.
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High yield and purity flame retardant bis-(4-allyloxy-3,5-dibromophenyl) sulfone (ATBS) was obtained by allyl-etherizing bis-(4-hydrxy-3,5-dibromophenyl) sulfone (TBS) with dropping allyl chloride in aqueous NaOH in the presence of cetyltrimethylammonium bromide (CTAB) or other surfactants.The catalyst amount,dropwise time,i-propanol amount,water amount influencing the yield and purity of ATBS were particularly discussed.When V (allyl chloride)=15 mL,m(TBS)=28.3 g,reaction temperature 65~75℃,reaction time 4 h,m(CTAB)=0.1~0.18 g,ATBS was prepared in a yield of 95.5%~97.5% and a purity of 95.5%~98.0%.When n(allyl chloride):n(TBS)=1:2.5,reaction temperature 80~90℃,reaction time 8 h,and the used surfactant was m(DBS)=0.8~1.0 g,m(OP-10)=0.5 g or m(OS-15)=0.8 g,respectively,ATBS was synthesized in a yield of 95.2%,97.3% or 95.5% and the purity of 94.0%,92.7% or 90.1%,respectively.
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