4-Vinylphenol → 4-Ethynylphenol

Participants

Reaction Steps

To 506.5 g of the same p-vinylphenol fraction as used in Example 5, obtained by vacuum flash distillation were added 150.3 g of methanol as a solvent and 4.4 g of 2,2′-azobis(2-methylbutyronitrile) as an initiator. A polymerization reaction was conducted at 80° C. for 3 hours to obtain 97.2 g of a poly(p-vinylphenol). The polymer had a Mw of 11,000, a Mn of 6,300, a light transmittance at 248 nm, of 75.2% and a light transmittance at 450 nm, of 95.7%.

Provenance & Evidence