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Citation: Li Xiaoli, Yu Guangqian, Li Yuliang. Catalytic Behaviour of Poly(styrene-4-vinylpyridine) Neodymium Complex for Butadiene Polymerization[J]. Chinese Journal of Applied Chemistry, ;1997, 14(1): 80-82. shu

Catalytic Behaviour of Poly(styrene-4-vinylpyridine) Neodymium Complex for Butadiene Polymerization

1.
Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022

Received Date: 11 April 1996
Available Online: 3 July 1996
Fund Project:

The catalytic behaviour of poly(styrene-4-vinylpyridine) (PS4V Py) neodymium complex[(NdCl₃)_n·PS4V Py] for butadiene polymerization was described. The catalytic activity of (NdCl₃)_n·PS4V Py was much greater than that of similar small molecule catalysts. The catalytic efficiency of (NdCl₃)_n·PS4V Py was up to 11.7 kg polybutadiene/g Nd, about 25 times that of NdCl₃·1.5DPy which exhibited the highest activity among the corresponding small molecule catalysts. The relationship between the activity of (NdCl₃)_n·PS4V Py and its constitution was discussed. The activity of (NdCl₃)_n·PS4V Py increased as the molar ratio of 4-vinylpyridine(4V Py)/Nd decreased. High activity was found at 4VPy/Nd ratio about 2 with 88~96% conversion. It is likely that uncoordinated 4VPy units remaining in the complex interact with the alkyl aluminium or active species to decrease the activity.
- styrene,
- vinylpyridine,
- copolymer,
- neodymium complex,
- butadiene polymerization
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