{TAIL ~ This invention} relates to novel addition products of isocyanates with oxyalkylene {HEAD ~ substituted arinophenol compounds} as intermediates for the production of urethane substituted xanthene colorants, particularly triphenylmethane derivatives such as rhodamines 
{ TAIL ~ This invention } relates to novel addition products of isocyanates with oxyalkylene { HEAD ~ substituted arinophenol compounds } as intermediates for the production of urethane substituted xanthene colorants , particularly triphenylmethane derivatives such as rhodamines
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