Indigo dyeing of polyester fibers

Polyester fiber can be dyed with indigo so as to possess washdown and fading characteristics similar to indigo-dyed cotton fibers provided they are first coated with a polymeric salt having the following repeating units: ##STR1## with from 0 to 75 mol % of another ethylenically unsaturated monomeric unit,or ##STR2## wherein R is hydrogen, methyl or ethylR.sup.1 is a divalent hydrocarbon radical of 1 to 4 C atomsR.sup.2 and R.sup.3 are lower alkyl (from 1 to 4 C atoms)R.sup.4 is hydrogen, hydroxyethyl or lower alkyl (from 1 to 4 C atoms)X.sup.- is an anionPreferably, in Formula A, R.sup.1 contains 2 carbon atoms; R.sup.2 .dbd.R.sup.3 .dbd.R.sup.4 .dbd.methyl; and X.sup.- is 83 mol % CH.sub.3 SO.sub.4 -- and 17 mol % C.sub.18 H.sub.35 SO.sub.4 --.

Skip to: Description  · Patent History  ·  Patent History
Description
Patent History
Patent number: T100201
Type: Grant
Filed: Feb 7, 1980
Date of Patent: Jan 6, 1981
Assignee: E. I. Du Pont de Nemours and Company (Wilmington, DE)
Inventor: Francis M. Logullo (Hockessin, DE)
Application Number: 6/119,212
Classifications
Current U.S. Class: Coating Or Sizing With Dyeing Process Or Product (8/495); Indigoid Dye (8/653)
International Classification: D06P 122; D06P 700;