Neodymium Organic Sulfonate Complexes: Tunable Electronegativity/Steric Hindrance and Application in Controlled <italic style="font-style: italic">Cis</italic>-1,4-polymerization of Butadiene

Jian-Yun He; Long Cui; Yan-Long Qi; Quan-Quan Dai; Chen-Xi Bai

doi:10.1007/s10118-019-2196-1

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Neodymium Organic Sulfonate Complexes: Tunable Electronegativity/Steric Hindrance and Application in Controlled Cis-1,4-polymerization of Butadiene

ARTICLE | Updated：2021-02-18

- Neodymium Organic Sulfonate Complexes: Tunable Electronegativity/Steric Hindrance and Application in Controlled Cis-1,4-polymerization of Butadiene
- Chinese Journal of Polymer Science Vol. 37, Issue 3, Pages: 208-215(2019)
- Affiliations：
  
  1.Key Laboratory of High-Performance Synthetic Rubber and its Composite Materials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
- Author bio：
  
  qqdai@ciac.ac.cn (Q.Q.D.)
  baicx@ciac.ac.cn (C.X.B.)
- Funds：
- DOI：10.1007/s10118-019-2196-1
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Jian-Yun He, Long Cui, Yan-Long Qi, et al. Neodymium Organic Sulfonate Complexes: Tunable Electronegativity/Steric Hindrance and Application in Controlled Cis-1,4-polymerization of Butadiene. [J]. Chinese Journal of Polymer Science 37(3):208-215(2019)
DOI：

Jian-Yun He, Long Cui, Yan-Long Qi, et al. Neodymium Organic Sulfonate Complexes: Tunable Electronegativity/Steric Hindrance and Application in Controlled Cis-1,4-polymerization of Butadiene. [J]. Chinese Journal of Polymer Science 37(3):208-215(2019) DOI： 10.1007/s10118-019-2196-1.

摘要

Abstract

Rare earth catalysts possessing characteristics of cation-anion ion pair show advantages of adjusting electronegativity and steric hindrance of metal active sites, which can control the catalytic performance and stereoselectivity better than those of traditional metallocene and Ziegler-Natta catalysts in diene polymerization. In this work, a series of neodymium organic sulfonate complexes, Nd(CF,3,SO,3,),3,·,x,H,2,O·,y,L (,x,y,: the coordination number; L refers to an organic electron donating ligand, such as acetylacetone (acac),iso,-octyl alcohol (IAOH), tributyl phosphate (TBP),etc,.), have been synthesized to form the cationic active species in the presence of alkylaluminum such as Al(,i,-Bu),3, AlEt,3, and Al(,i,-Bu),2,H, which display high activities and distinguishing ,cis,-1,4 selectivities (up to 99.9%) for the polymerization of butadiene. The microstructures, yield, molecular weight, and molecular weight distribution of the resulting polymer are well controlled by adjusting electronegativity/steric hindrance of the complexes. In addition, the kinetics, active species, and the possible process of polymerization are also discussed in this article.

关键词

Keywords

Neodymium catalystsOrganic sulfonate complexesTunable electronegativity and steric hindranceCis-14-polymerization Butadiene

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Neodymium Organic Sulfonate Complexes: Tunable Electronegativity/Steric Hindrance and Application in Controlled Cis-1,4-polymerization of Butadiene

DOI：10.1007/s10118-019-2196-1

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Abstract

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