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日用化学工业 ›› 2020, Vol. 50 ›› Issue (3): 155-158.doi: 10.3969/j.issn.1001-1803.2020.03.003

• 开发与应用 • 上一篇    下一篇

2-十一烷基-N-羧甲基-N-羟乙基咪唑啉的合成及性能

张高飞1,2,张威1,2,王丰收1,2   

  1. 1. 中国日用化学研究院有限公司,山西 太原 030001
    2. 上海发凯化工有限公司,上海 201505
  • 收稿日期:2019-07-18 修回日期:2020-03-04 出版日期:2020-03-22 发布日期:2020-04-02
  • 作者简介:张高飞(1985-),男,江西吉安人,工程师,硕士,电话:17511681799,E-mail:fei- 85@163.com
  • 基金资助:
    国家重点研发计划(2017YFB0308903)

Synthesis and properties of 2-undecyl-N-carboxymethyl-N-hydroxyethyl imidazolium chloride

Gao-fei ZHANG1,2,Wei ZHANG1,2,Feng-shou WANG1,2   

  1. 1. China Research Institute of Daily Chemistry Co., Ltd., Taiyuan, Shanxi 030001, China
    2. Shanghai Finechemical Co., Ltd., Shanghai 201505, China
  • Received:2019-07-18 Revised:2020-03-04 Online:2020-03-22 Published:2020-04-02

摘要:

以月桂酸、羟乙基乙二胺为原料,合成了十一烷基羟乙基咪唑啉,再与季铵化试剂氯乙酸乙酯反应合成了低盐含量的2-十一烷基-N-羧甲基-N-羟乙基咪唑啉(LSUHCI)。用FT-IR和质谱表征了十一烷基羟乙基咪唑啉中间体结构,并进行了组分定性定量分析,用FT-IR和 1H NMR表征了LSUHCI的结构,研究对比了其与普通型2-十一烷基-N-羧甲基-N-羟乙基咪唑啉(UHCI)的物化性能。结果表明,LSUHCI中NaCl含量为1.3%,是一种低盐型表面活性剂,LSUHCI的平衡表面张力(γcmc)为27.52 mN/m,临界胶束浓度(cmc)、润湿性和乳化性均优于UHCI,发泡性和稳泡性比UHCI差。

关键词: 月桂酸, 咪唑啉, 低盐含量, 性能

Abstract:

Undecyl hydroxyethyl imidazoline with less salt was synthesized from lauric acid and hydroxyethyl ethylenediamine. Then, 2-undecyl-N-carboxymethyl-N-hydroxyethyl imidazolium chloride (LSUHCI) was synthesized with ethyl chloroacetate as quaternization reagent. The structure of the intermediate, i.e. undecyl hydroxyethyl imidazoline, was characterized by FT-IR and mass spectrometry. The composition of the intermediate was also quantitatively analyzed. The structure of LSUHCI was characterized by FT-IR and 1H NMR. The physicochemical properties were studied and compared with ordinary industrial product (salt content=8.1%) of 2-undecyl-N-carboxymethyl-N-hydroxyethyl imidazolium chloride (UHCI). The results showed that the NaCl content in LSUHCI was 1.3%, which was a low-salt surfactant product. The balanced surface tension of LSUHCI was 27.52 mN/m. Its critical micelle concentration (cmc), wettability and emulsifying property were better than UHCI, while foaming ability and foam stability were worse than UHCI.

Key words: lauric acid, imidazoline, low salt content, property

中图分类号: 

  • TQ423