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- W2146134416 abstract "To develop the radical polyaddition of bisperfluoroisopropenyl esters, the reactions of bis(α-trifluoromethyl-β,β-difluorovinyl) terephthalate [CF2C(CF3)OCOC6H4COOC(CF3)CF2] (BFP) with dialkoxydialkylsilane were examined to prepare fluorinated hybrid polymers bearing dialkylsilyl groups in the main chain. Prior to polyaddition, the radical addition reaction of 2-benzoyloxypentafluoropropene [CF2C(CF3)OCOC6H5] (BPFP) has been investigated to afford the results that diethoxydimethylsilane (DEOMS) or dimethoxydimethylsilane with BPFP initiated by oxo radical are the best combination for the preparation of polymers. The mechanism of the addition reaction was proposed. Radical polyaddition of BFP with DEOMS initiated by benzoyl peroxide or di-tert-butyl peroxide has yielded polymers of up to molecular weight 1 × 106 with rather broad molecular weight distribution. A mechanism for the polyaddition reaction is proposed based on the radical addition reaction between BPFP and DEOMS. The step-growth polymerization is initiated by hydrogen abstraction of DEOMS to add a perfluoroisopropenyl group, followed by a 1,7-shift of the radical in the intermediate. The relationship between addition reaction mechanism and polyaddition mechanism was also discussed." @default.
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- W2146134416 date "2002-12-01" @default.
- W2146134416 modified "2023-09-24" @default.
- W2146134416 title "Novel Fluorinated Hybrid Polymer by Radical Polyaddition of Bis(-trifluoromethyl-,-difluorovinyl) Terephthalate onto Dialkoxydialkylsilanes" @default.
- W2146134416 doi "https://doi.org/10.1002/macp.200290017" @default.
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