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