vinyl fluoride
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Polymers ◽  
2020 ◽  
Vol 12 (7) ◽  
pp. 1609
Author(s):  
Qian Liu ◽  
Richard F. Jordan

The self-assembled multinuclear PdII complexes {(Li-OPOOMe2)PdMe(4-5-nonyl-pyridine)}4Li2Cl2 (C, Li-OPOOMe2 = PPh(2-SO3Li-4,5-(OMe)2-Ph)(2-SO3−-4,5-(OMe)2-Me-Ph)), {(Zn-OP-P-SO)PdMe(L)}4 (D, L = pyridine or 4-tBu-pyridine, [OP-P-SO]3− = P(4-tBu-Ph)(2-PO32−-5-Me-Ph)(2-SO3−-5-Me-Ph)), and {(Zn-OP-P-SO)PdMe(pyridine)}3 (E) copolymerize ethylene and vinyl fluoride (VF) to linear copolymers. VF is incorporated at levels of 0.1–2.5 mol% primarily as in-chain -CH2CHFCH2- units. The molecular weight distributions of the copolymers produced by D and E are generally narrower than for catalyst C, which suggests that the Zn-phosphonate cores of D and E are more stable than the Li-sulfonate-chloride core of C under copolymerization conditions. The ethylene/VF copolymerization activities of C–E are over 100 times lower and the copolymer molecular weights (MWs) are reduced compared to the results for ethylene homopolymerization by these catalysts.


2018 ◽  
Vol 116 (23-24) ◽  
pp. 3487-3494
Author(s):  
P. Stoppa ◽  
A. De Lorenzi ◽  
A. Pietropolli Charmet ◽  
S. Giorgianni ◽  
N. Tasinato ◽  
...  
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2016 ◽  
pp. 639-642
Author(s):  
George Wypych
Keyword(s):  

Polymer ◽  
2016 ◽  
Vol 82 ◽  
pp. 295-304 ◽  
Author(s):  
Brian D. Mather ◽  
Nicole M. Reinartz ◽  
Mark B. Shiflett

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