The Reactions of Poly(vinyl bromide) with Aniline

Abstract

The reaction of poly(vinyl bremide) (PVB) with a large excess of anilline proceeded asi a homogeneous reactioh. Aniline was much more easily introduced in polymer cabins in the For instance, reacti6n system of PVB-aniline than that of poly(vinyl ch-loridg). (PVC)-gnil ne. tb compar in the reaction system of being kept at 80 C for 48 hours, the introduction rate of aniline to PVB was about 20 times faster than that to PVC.
The reaction PVB with aniline was, at first, substitutional reaetion between bromine atom te b Cand aniline, and dehydrobromination. But the reaction proceeded further, the rate of fgriirxa" iMion of th6 double bond was found to be decreased again. in this fact, it was suspected that the additive reaction of aniline to polymer was occured.
The reaction of PVB with anilline gave N substituent at 80 C and 1090C, but the same reaction at 1500C, over 12 hours gave Ar-substituent. As the reaction time i-ncreased, the rdte of formation of Ar-substituent increased, but that of N-substituent decreased.