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生物质化学工程

生物质化学工程 ›› 2010, Vol. 44 ›› Issue (5): 30-34.

• 论文 • 上一篇    下一篇

回收PTA制取电缆增塑剂的新工艺

李科, 李翔宇, 聂小安, 许彬, 张华兰   

  1. 中国林业科学研究院, 林产化学工业研究所;生物质化学利用国家工程实验室;国家林业局林产化学工程重点开放性实验室;江苏省生物质能源与材料重点实验室, 江苏 南京 210042
  • 收稿日期:2010-02-26 修回日期:1900-01-01 出版日期:2010-09-30 发布日期:2010-09-30

Study on New Preparation Process of Cable Plasticizers from Recycled PTA

LI Ke, LI Xiang-yu, NIE Xiao-an, XU Bin, ZHANG Hua-lan   

  1. Institute of Chemical Industy of Forestry Products, CAF;National Engineering Lab. for Biomass Chemical Utilization;Key and Open Lab. on Forest Chemical Engineering;Key Lab. of Biomass Energy and Material, Jiangsu Province, SFA, Nanjing 210042, China
  • Received:2010-02-26 Revised:1900-01-01 Online:2010-09-30 Published:2010-09-30

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摘要： 用富含对苯二甲酸(PTA)的工业废弃苯酐和异辛醇合成了增塑剂对苯二甲酸二异辛酯(DOTP),研究了不同反应条件对合成工艺的影响。结果表明:以钛酸四丁酯为催化剂,催化剂用量0.2%、醇酸物质的量之比2.2:1、240℃下反应4h,转化率大于99%,气相检测蒸馏后产品有效成分达94%。通过此工艺合成DOTP,可以避免原料纯化所带来的碱化、提纯、酸化、干燥等诸多步骤,所有杂质都在产品纯化中去除,且产品质量良好。

关键词: 增塑剂, 酯化反应, 对苯二甲酸二异辛酯

Abstract: Plasticizer diisooctyle terephthalate(DOTP)were synthesized from industrial waste phthalic anhydride which rich in pure terephalic acid(PTA) and iso-octanol. The effects of different conditions were studied. The results showed that the optimum conditions were as follows: tetrabutyl titanate has good catalytic effect, the amount of catalyst 0.2%, reaction temperature 240℃ and reaction time 4h. Under these conditions the conversion rate was >99% and purity was 94%. Compare to the current process(reaction after pretreatment), it will be decrease of many steps,such as alkalization, purification and evaporation etc. Impurities can be removed in the product purification and the product has good quality.

Key words: plasticizers, esterification, diisooctyle terephthalate (DOTP)

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