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