D - Textiles – Paper – 06 – P
Patent
D - Textiles, Paper
06
P
8/49
D06P 5/22 (2006.01) D06P 1/22 (2006.01)
Patent
CA 1226406
ABSTRACT 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: Image 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.
449117
Akzona Incorporated
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
LandOfFree
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