Bi:functional initiators for anionic polymerisation

摘要

Organo-alkali metal cpds. of formula (I) are claimed; (I) are obtd. by reaction of the corresp. diaryl-ethylene of formula (RmAr1)(RnAr2)C=CHR (II) with an alkali metal (M); In the formulae Ar1, Ar2 = aryl or heteroaryl gp. with one or more opt. separate or condensed rings; R = substit. other than H which is inert towards M or M-alkyl, i.e. 1-25C alkyl, 7-25C aralkyl or 5-25C cycloalkyl, or derivs. thereof contg. inert mol. components; sum of the C atoms in all the R gps. (in II) = at least 3; m, n = whole no. up to 4.