US4144028A
Expired / Lapsed
US
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Tint compositions for nylon having improved fugitivity properties
Assignee: Milliken Research Corp
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Filing: 1976-09-03
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Granted: 1979-03-13
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Expires: 1996-09-03
Abstract
Abstract Tint compositions for nylon having improved fugitivity properties comprising an admixture of a colorant having the general formula R--N--[(CH.sub.2 CH.sub.2 O).sub.n H].sub.2 }.sub.x wherein R is an organic dyestuff radical, x is an integer of 1 to 6, and the product of 2n times x is from about 200 to about 300, and a minor effective amount of a free radical inhibitor to retard free radical interaction between the colorant and the nylon.
Inventors
- 👤 Peter J. Hauser
- 👤 James E. Hendrix
- 👤 Hans H. Kuhn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:12
CPC Classifications
D; D06; D06P; D06P5/00; D06P5/13; D06P5/138; C; C09; C09B; C09B67/00; C09B67/0071
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
71 words
Fugitive tint compositions for amorphus, undrawn nylon or fully drawn cationic dyeable nylon comprising an admixture of a colorant having the formula R -- { N -- [(CH.sub.2 CH.sub.2 O).sub.n H].sub.2 } x wherein R is an organic dyestuff radical, x is an integer of 1 to 6, and the product of 2n times x is from about 200 to 300, and a minor effective amount of a free radical inhibitor.
Claim 2
Dependent Claim
71 words
Fugitive tint compositions for amorphus, undrawn nylon or fully drawn cationic dyeable nylon comprising an admixture of a colorant having the formula R -- { N -- [(CH.sub.2 CH.sub.2 O).sub.n H].sub.2 } x wherein R is an organic dyestuff radical, x is an integer of 1 to 6, and the product of 2n times x is from about 200 to 300, and a minor effective amount of a free radical inhibitor.
Claim 3
Dependent Claim
32 words
The fugitive tint composition of claim 1 wherein said free-radical inhibitor is present in an amount of from about 0.5 to about 5 weight percent, based on the weight of said colorant.
Claim 4
Dependent Claim
34 words
The fugitive tint composition of claim 2 wherein said free radical inhibitor is selected from the group consisting of thiourea, hydroquinone, the monoethyl ether of hydroquinone, mercaptans, p-benzoquinone, sodium dimethyldithiocarbamate and butylated hydroxy toluene.
Claim 5
Dependent Claim
14 words
The fugitive tint composition of claim 3 wherein said free radical inhibitor is thiourea.
Claim 6
Dependent Claim
14 words
The fugitive tint composition of claim 3 wherein said free radical inhibitor is hydroquinone.
References Cited (Backward Citations)
US3157633A
Cited
US3929406A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-03-12 | 1982-09-11 | 1983-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-03-12 | 1986-09-11 | 1987-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-03-12 | 1990-09-11 | 1991-03-13 | $7700.00 | Window Closed / Lapsed |