Intermediates and colorants having primary hydroxyl enriched poly (oxyalkylene) moieties and their preparation

摘要

The present invention provides primary hydroxyl enhanced colorants having markedly improved reactivities in e.g., polyurethane foams for imparting permanent coloring thereto, the colorants having the formula C-(Z)1-4 are provided wherein C is an azo, methine, or azamethine chromogen and Z is a poly(oxyalkylene) moiety comprised of (1) at least two (A) units independently selected from those of the formulae -CH2CH(O-T)CH2O- or -CH2CH(O-T)CH2O-T and (2) from none to about 200 (B) units of the formula (-RO-) wherein R is straight or branched chain hydrocarbon of 2-4 carbons, T is a moiety of the formula -CH2CH(R1)-O-(RO)0-40-CH2CH2OH wherein R1 is selected from unsubstituted or substituted alkyl, aryl, alkenyloxyalkyl, alkoxyalkyl or aryloxyalkyl, and wherein the A units comprise at least 0.5 percent of the total A+B units.