ylbenzyl group, R2 is a hydrogen atom or an ??-methylbenzyl...http://www.google.com.au/patents/US4436522?utm_source=gb-gplus-sharePatent US4436522 - Disperse dye compositionAdvanced Patent SearchPublication numberUS4436522 APublication typeGrantApplication numberUS 06/336,482Publication date13 Mar 1984Filing date31 Dec 1981Priority date31 Dec 1981Fee statusPaidPublication number06336482, 336482, U