Novel addition products of isocyanates with oxyalkylene substituted {HEAD ~ aminophenol compounds} as {TAIL ~ intermediates} for the production of urethane substituted xanthene colorants, particularly triphenylmethane derivatives such as rhodarnines, are provided 
Novel addition products of isocyanates with oxyalkylene substituted { HEAD ~ aminophenol compounds } as { TAIL ~ intermediates } for the production of urethane substituted xanthene colorants , particularly triphenylmethane derivatives such as rhodarnines , are provided
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH