Indigo-dyeable polyester fibers and pretreatment of polyester to

Details Indigo-dyeable polyester fibers and pretreatment of polyester to Indigo-dyeable polyester fibers and pretreatment of polyester to

1983-03-09

1987-10-13

Clingman, A. Lionel

Bleaching and dyeing; fluid treatment and chemical modification

Organic additive for dye composition, dye composition...

Nitrogen-containing, other than nitro or nitroso

8581, 8606, 8653, 8922, C09B 6700

Patent

active

046996273

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: ##STR1## wherein R.sub.1 is alkyl or alkenyl of about 10-18 carbons; R.sub.2 is alkyl, alkylaryl, or alkenyl of about 8-18 carbons, R--CH.sub.2 --NO.sub.2, R--CH.dbd.NH, where R is alkyl or alkenyl from one to eighteen carbons; and R.sub.3 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 (e.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.

REFERENCES:
patent: T100201 (1981-01-01), Logullo
patent: 3504998 (1970-04-01), Speier
patent: 3527556 (1970-09-01), Riley
patent: 3793341 (1974-02-01), Genta
patent: 3960479 (1976-06-01), Tsujimoto et al.
patent: 4313732 (1982-02-01), Teaque et al.
patent: 4335185 (1982-06-01), Adelman et al.
patent: 4369213 (1983-01-01), Adelman et al.
"Ultrablue Denims", Canadian Textile, p. 16, (Oct. 1982).

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