AB monomers of hydroxy modified PBO and its novel synthesis technology

JIN Ningren; LI Chen; HU Xiaofeng; HU Yanhong; ZHANG Jianting

doi:10.11949/j.issn.0438-1157.20141644

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AB monomers of hydroxy modified PBO and its novel synthesis technology

更新时间：2025-12-10

- AB monomers of hydroxy modified PBO and its novel synthesis technology
- CIESC Journal Issue 5, Pages: 1955-1963(2015)
- 作者机构：
  
  1. 浙江工业大学化学工程学院,浙江,杭州,310032
  2. 浙江鼎龙集团总公司研发中心,浙江,杭州,310004
- 作者简介：
- 基金信息：
- DOI：10.11949/j.issn.0438-1157.20141644
  CLC： Q316.342
- Online First：05 May 2015，
  
  Published：05 May 2015
- 稿件说明：
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JIN Ningren, LI Chen, HU Xiaofeng, et al. AB monomers of hydroxy modified PBO and its novel synthesis technology[J]. CIESC Journal, 2015, (5): 1955-1963.
DOI：

JIN Ningren, LI Chen, HU Xiaofeng, et al. AB monomers of hydroxy modified PBO and its novel synthesis technology[J]. CIESC Journal, 2015, (5): 1955-1963. DOI： 10.11949/j.issn.0438-1157.20141644.

摘要

提出单羟基改性PBO及其AB型单体的分子结构

研究了以4-氨基-6-硝基间苯二酚盐酸盐(ANR·HCl)和羟基对苯二甲酸(HTA)为原料直接缩环合制备2-羟基-4-(5-硝基-6-羟基苯并唑-2-基)苯甲酸(HNBA)、再还原合成AB型单体:2-羟基-4-(5-氨基-6-羟基苯并唑-2-基)苯甲酸(HABA)的新方法。结果表明:缩环合制备的HNBA

其纯度96.81%、收率69.25%;进一步还原合成出纯度>98%的单体HABA

以ANR·HCl计的总收率为58.38%;具有原料易得、步骤短、条件缓和、产物稳定性优异以及缩聚基团完全等当比等性质。合成的新单体HABA及其前体HNBA

经FT-IR和MS以及NMR等分析和表征

证实了其分子结构。

Abstract

The molecular structure of a monohydroxy modified PBO and its AB monomer were proposed

and 2-hydroxy-4-(5-amino-6-hydroxybenzoxazole-2-yl) benzoic acid(HABA)was synthesized by the condensation-cyclization reaction of 4-amino-6-nitroresorcinol hydrochloride(ANR·HCl)and hydroxy terephthalic acid(HTA)

then 2-hydroxy-4-(5-nitro-6-hydroxybenzoxazole-2-yl) benzoic acid(HNBA)was reduced to obtain the AB monomer (HABA). The precursor HNBA was one-pot prepared from ANR·HCl and HTA with a yield of 69.25% and purity of 96.81%

and the AB monomer HABA with a purity >98% was obtained by reducing HNBA

with a total yield of 58.38% from ANR·HCl. The novel synthesis technology had the characteristics of convenient source of raw materials

short reaction steps

mild conditions

excellent stability and equi-molar polycondensing group. HABA and HNBA were identified with FT-IR

MS and NMR.

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