Page 190 - 《精细化工》2020年 第10期
P. 190
第 37 卷第 10 期 精 细 化 工 Vol.37, No.10
2020 年 10 月 FINE CHEMICALS Oct. 2020
橡塑助剂
4,4,4-三膦酸甲酯三苯胺的合成及应用
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杨旭锋 ,陈栋栋 ,职慧珍 ,杨锦飞
(1. 吕梁学院 化学化工系,山西 吕梁 033011;2. 南京师范大学 化学与材料科学学院,江苏 南京
210023)
摘要:以三苯胺为原料,通过亲电取代反应制备得到中间体 4,4,4–三碘代三苯胺(TITPA),该中间体与亚磷
酸三甲酯在 Pd(PPh 3 ) 2 Cl 2 催化下经 Arbuzov 重排得到目标产物 4,4,4–三膦酸甲酯三苯胺(TPTPA)。通过
1 HNMR、 CNMR、 PNMR、高分辨质谱和元素分析对目标产物进行了结构表征,并考察了催化剂种类与用量、
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反应温度、反应时间对目标化合物产率的影响。结果表明,最佳合成条件为:n〔Pd(PPh 3 ) 2 Cl 2 〕∶n(TITPA)=
0.18∶1.00,反应温度 150 ℃,反应时间 5 h。在该条件下,目标产物 TPTPA 的收率可达 82.5%。进一步地,将
TPTPA 用于 PVC 的阻燃改性。结果表明,当 TPTPA 添加量为 10%(以 PVC 树脂的质量为基准,下同),样品
的极限氧指数可达 29.6%、UL-94 垂直燃烧达 V-0 级,且力学性能良好。
关键词:膦酸酯;阻燃剂;4,4,4-三碘代三苯胺;Arbuzov 反应;橡塑助剂
中图分类号:TQ314.24 文献标识码:A 文章编号:1003-5214 (2020) 10-2120-05
Synthesis and application of hexamethyl
[nitrilotris(benzene-4,1-diyl)]tris(phosphonate)
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YANG Xufeng , CHEN Dongdong , ZHI Huizhen , YANG Jinfei
(1. Department of Chemistry & Chemical Engineering, Luliang University, Luliang 033001, Shanxi, China; 2. School
of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210023, Jiangsu, China)
Abstract: 4,4′,4′′-Nitrilotris(1-iodobenzene) (TITPA) was synthesized using triphenylamine as raw material
through electrophilic substitution reaction. Subsequently, a classic Arbuzov rearrangement reaction between
intermediate TITPA and trimethyl phosphite was performed in a catalytic amount of Pd(PPh 3) 2Cl 2 to obtain
hexamethyl[nitrilotris(benzene-4,1-diyl)]tris(phosphonate) (TPTPA). The target product was characterized
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by HNMR, CNMR, PNMR, HR-MS and elemental analysis. The effects of catalyst types, catalyst
dosage , reaction temperature and reaction time on the yield of the target compound were investigated. The
results showed that the optimum conditions were obtained as follows: n[Pd(PPh 3) 2Cl 2]∶n(TITPA) = 0.18∶
1.00, reaction temperature of 150 ℃, reaction time of 5 h. Under these conditions, the yield of
hexamethyl[nitrilotris(benzene-4,1-diyl)]tris(phosphonate) could reach 82.5%. Subsequently, TPTPA as a
flame retardant was used for flame retardant modification of PVC. The results indicated that the
prepared sample with an additive amount of TPTPA of 10% (based on the mass of PVC resin, the same
below) had limited oxygen index of 29.6% and vertical combustion test of UL-94 up to V-0 level as
well as maintained excellent mechanical properties.
Key words: phosphonate; flame retardant; 4,4′,4′′-nitrilotris(1-iodobenzene); Arbuzov reaction; rubber and
plastics auxiliaries
橡胶、塑料、胶黏剂等高分子材料具有密度小、 广泛应用于生产、生活、科研、国防等多个领域 [1-3] ,
韧性好、比强度高、耐疲劳性好等优异性能,现已 为社会进步和科技发展作出了巨大贡献。然而,大
收稿日期:2020-04-30; 定用日期:2020-06-24; DOI: 10.13550/j.jxhg.20200364
基金项目:山西省高等学校科技创新项目(2019L0966、2019L0941);江苏省产业前瞻与共性关键技术竞争项目(BE2017165)
作者简介:杨旭锋(1988—),男,博士,讲师,E-mail:yangxufeng@llhc.edu.cn。联系人:职慧珍(1974—),女,副教授,E-mail:
zhihuizhen@163.com。