US3762872A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuous solvent dyeing process
Assignee: Burlington Industries Inc
•
Filing: 1971-07-07
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Granted: 1973-10-02
•
Expires: 1991-07-07
Abstract
Abstract Fabric, preferably polyester fabric, dyed in any appropriate manner with a non-reactive dyestuff is introduced while cool into a first chamber filled with saturated solvent vapors, the wet fabric is then passed to another chamber filled with super-heated vapors of the same solvent which permits the solvent to penetrate the fibers and carry the dye into the surface of the fibers.
Inventors
- 👤 W Acree
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:06
CPC Classifications
D; D06; D06P; D06P1/00; D06P1/90; D06P1/92; D06P1/922; D06P1/924; D06B; D06B9/00; D06B9/02; Y; Y10; Y10S; Y10S8/00; Y10S8/916; Y10S8/918; Y10S8/92; Y10S8/922; Y10S8/924; Y10S8/927
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
23 words
A process according to claim 1 wherein the solvent in both steps (1) and (2) is the same and is a chlorinated hydrocarbon.
Claim 2
Dependent Claim
28 words
A process according to claim 2 wherein the fabric remains in contact with the solvent in step (2) until the fabric reaches the boiling point of the solvent.
Claim 3
Dependent Claim
26 words
A process according to claim 3 wherein the vapors of the solvent in step (2) are super-heated and are above the boiling point of the solvent.
Claim 4
Dependent Claim
11 words
A process according to claim 4 wherein the solvent is perchloroethylene.
Claim 5
Dependent Claim
13 words
A process according to claim 5 wherein the fabric is a polyester fabric.
Claim 6
Dependent Claim
13 words
A process according to claim 4 wherein the fabric is a polyester fabric.
Claim 7
Dependent Claim
13 words
A process according to claim 2 wherein the fabric is a polyester fabric.
Claim 8
Dependent Claim
95 words
In a process for the solvent dyeing of fabrics with a non-reactive dye the improvement consisting of carrying out the dyeing in two steps in immediate succession wherein in the first step the dye containing fabric is subjected to saturated vapors of a halogenated hydrocarbon at the boiling point and condensation of the solvent provides the dyebath and in the second step the dye containing fabric is subjected to superheated vapors of said halohydrocarbon for a time sufficient for the fabric to approximate the temperature of said super heated vapors and to fix the dye.
Claim 9
Dependent Claim
12 words
A process according to claim 9 wherein the fabric is a polyester.
Claim 10
Dependent Claim
13 words
A process according to claim 1 wherein the dye is a disperse dye.
Claim 11
Dependent Claim
25 words
A process according to claim 1 wherein the fabric is selected from the group consisting of polyester fabrics, nylon fabrics, acrylic fabrics and cellulosic fabrics.
Claim 12
Dependent Claim
26 words
A process according to claim 12 wherein the dye is selected from the group consisting of disperse dyes, cationic dyes, acid dyes and pre-metallized acid dyes.
Claim 13
Dependent Claim
13 words
A process according to claim 13 wherein the dye is a disperse dye.
Claim 14
Dependent Claim
26 words
A process according to claim 13 wherein the vapors of the solvent in step (2) are super-heated and are above the boiling point of the solvent.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-01 | 1977-04-02 | 1977-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-01 | 1981-04-02 | 1981-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-01 | 1985-04-02 | 1985-10-02 | $7700.00 | Window Closed / Lapsed |