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US3981679A
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Method for dyeing the jute backing of multilevel nylon carpet without staining the nylon face fibers
Assignee: Diamond Shamrock Corp
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Filing: 1975-05-21
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Granted: 1976-09-21
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Expires: 1995-05-21
Abstract
Abstract In dyeing the jute backing of carpet having multilevel nylon face fibers with cationic dyes, discernible staining of the face fibers is prevented by dyeing the jute in the presence of a stain-preventing quantity of particular imidazoline salts and imidazoline quaternary salts.
Inventors
- 👤 Nick J. Christie
- 👤 John Karnilaw
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 06:28
CPC Classifications
D; D06; D06P; D06P1/00; D06P1/44; D06P1/64; D06P1/642; D06P1/6426; C; C07; C07D; C07D233/00; C07D233/04; C07D233/06; C07D233/08; C07D233/12; C07D233/14; D06P1/655; D06P1/66; D06P3/00; D06P3/58; D06P3/60; D06P3/6016; D06P5/00; D06P5/12
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
96 words
In a process of dyeing with a cationic dye the backing of a jute-backed carpeting having multilevel nylon face fibers, the improvement which comprises; dyeing the jute backing in the presence of a quantity of an imidazoline compound preventing discernible staining of the face fibers, said compound having the general formula: ##EQU1## wherein: R is a hydrocarbon radical having 15 to 17 carbon atoms, R 1 is a ##EQU2## R 2 is hydrogen, an unsubstituted or hydroxy-substituted aliphatic hydrocarbon radical having 1 to 6 carbon atoms or a benzyl radical, X equals a water-soluble anion, and
Claim 2
Dependent Claim
96 words
In a process of dyeing with a cationic dye the backing of a jute-backed carpeting having multilevel nylon face fibers, the improvement which comprises; dyeing the jute backing in the presence of a quantity of an imidazoline compound preventing discernible staining of the face fibers, said compound having the general formula: ##EQU1## wherein: R is a hydrocarbon radical having 15 to 17 carbon atoms, R 1 is a ##EQU2## R 2 is hydrogen, an unsubstituted or hydroxy-substituted aliphatic hydrocarbon radical having 1 to 6 carbon atoms or a benzyl radical, X equals a water-soluble anion, and
Claim 3
Dependent Claim
13 words
a is a number equal to the ionic valence of the anion, X.
Claim 4
Dependent Claim
13 words
a is a number equal to the ionic valence of the anion, X.
Claim 5
Dependent Claim
23 words
The process of claim 1 wherein the carpeting is treated with the imidazoline compound for a finite period before dyeing the jute backing.
Claim 6
Dependent Claim
10 words
The process of claim 1 wherein R 2 is hydrogen.
Claim 7
Dependent Claim
26 words
The process of claim 1 wherein R 2 is an unsubstituted or hydroxy-substituted aliphatic hydrocarbon radical having 1 to 6 carbon atoms or a benzyl radical.
Claim 8
Dependent Claim
15 words
The process of claim 1 wherein R 1 is a -- CH 2 -- radical.
Claim 9
Dependent Claim
15 words
The process of claim 5 wherein R is a hydrocarbon radical having 17 carbon atoms.
Claim 10
Dependent Claim
23 words
The process of claim 6 wherein the carpeting is treated with the imidazoline compound for a finite period before dyeing the jute backing.
Claim 11
Dependent Claim
16 words
The process of claim 5 wherein R is a heptadecylene radical and R 2 is hydrogen.
Claim 12
Dependent Claim
23 words
The process of claim 8 wherein the carpeting is treated with the imidazoline compound for a finite period before dyeing the jute backing.
Claim 13
Dependent Claim
44 words
The process of claim 5 wherein R is a heptadecylene radical, R 2 is a methyl or ethyl radical, and X - is a methosulfate anion when R 2 is a methyl radical and an ethosulfate anion when R 2 is an ethyl radical.
Claim 14
Dependent Claim
23 words
The process of claim 10 wherein the carpeting is treated with the imidazoline compound for a finite period before dyeing the jute backing.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-09-21 | 1980-03-22 | 1980-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-09-21 | 1984-03-22 | 1984-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-09-21 | 1988-03-22 | 1988-09-21 | $7700.00 | Window Closed / Lapsed |