Abstract
AbstractSuccessful grafting of 2(2‐hydroxy‐5‐vinylphenyl)2H‐benzotriazole onto saturated aliphatic CH groups of polymers has been accomplished. When the grafting reaction was carried out in chlorobenzene at 150–160°C with di‐tertiary butylperoxide as the grafting initiator, grafts as high as 20–30% at grafting efficiencies of 50 and 80% have readily been obtained. It was very important to carry out the grafting reaction in tubes sealed under high vacuum since trace amounts of oxygen cause complete inhibition of the grafting reaction by the phenolic monomer. Grafting reactions were carried out on a variety of different polymers including atactic polypropylene, ethylene/vinyl acetate copolymer, poly(methyl methacrylate), poly(butyl acrylate), and polycarbonate.
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