| 摘要 |
<p>A new and useful indigo-dyeable polyester is disclosed, and process for making same, for which a suitable polyester has had applied to its surface an amount of a suitable indigo dye retaining compound effective to provide said polyester with indigo fastness properties similar to cotton. The new indigo dyeable polyester may be employed in the manufacture of a staple material blended with cotton in predetermined amounts depending on the end use desired, e.g., 50:50 by weight for cotton denims (e.g., jeans). Preferable indigo dye retaining compounds comprise monomers dioleylamine and dicocoamine. Other suitable indigo dye retaining monomers are disclosed, inter alia, having the formula: < IMG > wherein R1 is alkyl or alkenyl of about 10-18 carbons; R2 is alkyl, alkylaryl, or alkenyl of about 8 - 18 carbons, R-CH2-NO2, R-CH=NH, where R is alkyl or alkenyl from one to eighteen carbons; and R3 is hydrogen or alkyl from one to about twelve carbons. A process is also disclosed for treating a meltspun suitable polyester fiber with an amount (2.g., about 0.25%/-2.0% by weight) of a suitable indigo dye retaining compound effective to provide said polyester fiber with indigo fastness properties similar to cotton.</p> |
