US3660008A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dyeing sulfonated anionic polymeric fibers with an aqueous dispersion of a salt of a cationic dye and an arylsulfonate
Assignee: EIDP Inc
•
Filing: 1968-04-25
•
Granted: 1972-05-02
•
Expires: 1988-04-25
Abstract
Abstract An aqueous dispersion of (1) a water-insoluble salt of a cationic dye and a selected anion of an arylsulfonic acid with (2) an anionic dispersing agent selected from lignin sulfonate or a salt of a sulfonated naphthalene-formaldehyde condensate has been found useful in the high-temperature dyeing of acid modified acrylic, polyamide, or polyester fibers, either alone or in blend by continuous dyeing operations. The salts can be represented by the formulas D+Ar''SO3- and K+ArSO3+where D+ is a cationic dye having a resonating or delocalized positive charge and Ar'' is an aryl group substituted with substituents such that the summation of the pKa increments for the substituents is equal to or less than -0.9; and K+ is a cationic dye having a localized positive charge and Ar is an aryl group substituted with substituents such that the summation of the pKa increments for the substituents is equal to or less than -0.6.
Inventors
- 👤 Erik Kissa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:14
CPC Classifications
C; C09; C09B; C09B67/00; C09B67/0071; C09B67/0075; C09B11/00; C09B11/04; C09B11/10; C09B11/12; C09B11/28; D; D06; D06P; D06P1/00; D06P1/41
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
19 words
The process of claim 1 wherein the anionic polymeric fiber is selected from an acid-modified acrylic, or -polyester fiber.
Claim 2
Dependent Claim
5 words
drying the padded fiber, and
Claim 3
Dependent Claim
20 words
heating the fiber at 350*-450* F. for from about 60 to 300 seconds to fix the dye in the fiber.
Claim 4
Dependent Claim
59 words
THe process of claim 2 wherein the padding step (1) is carried out in a pad bath having a pH of 6 to 9; the drying step (2) is carried out at a temperature of from 80* to 150* F.; and the heating step is carried out at 350*-450* F. for from about 60 seconds to about 180 seconds.
Claim 5
Dependent Claim
13 words
The process of claim 2 wherein the water-insoluble salt has the formula D+Ar''SO3+.
Claim 6
Dependent Claim
36 words
The process of claim 4 wherein D+ of the water-insoluble salt is the cationic dye derived from a diphenylmethane, triarylmethane, xanthene, acridine, thiazole, indamine, azine, oxazine, thiazine or an azo dye having a delocalized positive charge.
Claim 7
Dependent Claim
43 words
The process of claim 5 wherein Ar'' of the water-insoluble salt is phenyl or naphthyl substituted with substituents that are non-ionogenic and whose summation of pKa increments, as measured on benzoic acid derivatives in aqueous medium, is equal to or less than -0.9.
Claim 8
Dependent Claim
28 words
The process composition of claim 4 wherein Ar''SO3- of the water-insoluble salt is selected from 4-nitrotoluene-2-sulfonate, 2,4-dinitrobenzenesulfonate, naphthalene-2-sulfonate, dimethylisophthalate-5-sulfonate, o-chlorobenzenesulfonate, 3,4-dinitrobenzenesulfonate, 2,5-dinitrobenzenesulfonate, 2-nitrobenzenesulfonate, 3-ethoxy-carbonyl-4-cyanobenzenesulfonate, 3-trifluoromethyl-5-cyanobenzenesulfonate, 2,4-dibromobenzenesulfonate or 2,5-dichlorobenzenesulfonate.
Claim 9
Dependent Claim
14 words
The process of claim 2 wherein the water-insoluble salt has the formula K+ ArSO3-.
Claim 10
Dependent Claim
32 words
The process of claim 8 wherein Z of the water-insoluble salt is an azo- or anthraquinone dye chromophore and Y is a covalent bond or alkylene of one to six carbon atoms.
Claim 11
Dependent Claim
43 words
The process of claim 9 wherein Ar of the water-insoluble salt is phenyl or naphthyl substituted with substituents that are non-ionogenic and whose summation of pKa increments, as measured on benzoic acid derivatives in aqueous medium, is equal to or less than -0.6.
Claim 12
Dependent Claim
27 words
The process of claim 10 wherein ArSO3- of the water-insoluble salt is selected from 3-nitrobenzenesulfonate, 4-nitrotoluene-2-sulfonate, 2,4-dinitrobenzenesulfonate, 3-methyltoluene-2-sulfonate, 2-nitro-4,5-dimethoxybenzenesulfonate, naphthalene-2-sulfonate, dimethylisophthalate-5-sulfonate, 2-chlorobenzenesulfonate, 2-fluorobenzenesulfonate, 4-cyanobenzene sulfonate, or 2,4-dichlorobenzenesulfonate.
Claim 13
Dependent Claim
21 words
The process of claim 2 carried out on acid modified acrylic, or -polyester fibers which have been blended with other fibers.
Claim 14
Dependent Claim
12 words
The process of claim 12 wherein the other fibers are cellulosic fibers.
References Cited (Backward Citations)
US1613228A
Cited
US2837500A
Cited
US2837501A
Cited
US3018272A
Cited
US2922690A
Cited
US3173747A
Cited
US3185538A
Cited
US3549612A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-05-02 | 1975-11-01 | 1976-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-02 | 1979-11-01 | 1980-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-02 | 1983-11-01 | 1984-05-02 | $7700.00 | Window Closed / Lapsed |