Neodymium versatate catalyst for the 1,3-butadiene polymerization - Effects of reaction parameters

被引：7
作者：
Gaioto, Carolina C. [1 ]
Schmal, Martin [1 ]
da Silva Pinto, Jose Carlos [1 ]
机构：
[1] Univ Fed Rio de Janeiro, COPPE, Programa Engn Quim, Cidade Univ,CP 68502, BR-21941972 Rio De Janeiro, RJ, Brazil
来源：
CATALYSIS TODAY | 2020年 / 344卷
关键词：
1,3-Butadiene; Polybutadiene; Solution polymerization; Neodymium catalyst; ZIEGLER-NATTA CATALYST; HIGH CIS-POLYBUTADIENE; BUTADIENE; SESQUICHLORIDE; OPTIMIZATION;
D O I：
10.1016/j.cattod.2018.10.031
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
Neodymium versatate was used as catalyst to perform solution 1,3-butadiene polymerizations. Catalysts were synthesized and aged at 5 degrees C for 0-60 days. Reactions were performed in the temperature range from 60 to 80 degrees C for 40-120 min. The obtained polymer products were characterized by Fourier-transform infrared spectroscopy (FTIR) and gel permeation chromatography (GPC). It is shown that the isomers content of the final resin is sensitive to ageing and to modification of the reaction temperature in the analyzed range. Besides, aged catalysts allowed for production of polybutadienes with higher molecular weights and higher polymer yields. Finally, it is shown that chain reincorporation reactions take place when reaction is allowed to continue after reaching monomer conversions that are close to 100%.
引用
收藏
页码：84 / 91
页数：8
相关论文
共 38 条
  • [1] Highly trans-stereospecific isoprene polymerization by neodymium borohydrido catalysts
    Bonnet, F
    Visseaux, M
    Pereira, A
    Barbier-Baudry, D
    [J]. MACROMOLECULES, 2005, 38 (08) : 3162 - 3169
  • [2] Brandao ALT., 2017, MACROMOL THEOR SIMUL, V26, P1
  • [3] DUTIA P, 2004, CHEM WEEKLY BOMBAY, V49, P179
  • [4] Mathematical Modeling of MWD and CBD in Polymerizations with Macromonomer Reincorporation and Chain Running
    Ferreira, Luis Carlos, Jr.
    Nele, Marcio
    Costa, Marcos A. S.
    Pinto, Jose Carlos
    [J]. MACROMOLECULAR THEORY AND SIMULATIONS, 2010, 19 (8-9) : 496 - 513
  • [5] Analysis of Solution Polybutadiene Polymerizations Performed With a Neodymium Catalyst
    Ferreira, Luis Carlos, Jr.
    de Santa Maria, Luiz Claudio
    Costa, Marcos A. S.
    Tochetto Pires, Neusa Maria
    Nele, Marcio
    Pinto, Jose Carlos
    [J]. POLYMER ENGINEERING AND SCIENCE, 2011, 51 (04) : 712 - 720
  • [6] Polymerization of 1,3-butadiene initiated by neodymium versatate/triisobutylaluminum/ethylaluminum sesquichloride: Impact of the alkylaluminum cocatalyst component
    Friebe, L
    Windisch, H
    Nuyken, O
    Obrecht, W
    [J]. JOURNAL OF MACROMOLECULAR SCIENCE-PURE AND APPLIED CHEMISTRY, 2004, A41 (03): : 245 - 256
  • [7] Friebe L, 2002, MACROMOL CHEM PHYSIC, V203, P1055, DOI 10.1002/1521-3935(20020501)203:8<1055::AID-MACP1055>3.0.CO
  • [8] 2-H
  • [9] Friebe L., 2004, J MACROL SCI, V25
  • [10] Neodymium-based Ziegler/Natta catalysts and their application in diene polymerization
    Friebe, Lars
    Nuyken, Oskar
    Obrecht, Werner
    [J]. NEODYMIUM BASED ZIEGLER CATALYSTS-FUNDAMENTAL CHEMISTRY, 2006, 204 (1-154): : 1 - 154
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