Patent US3907523A successfully refreshed from Google Patents.
Patent US3802835A successfully refreshed from Google Patents.
US3802835A
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Alcohol-ammonia dye solution and dyeing therewith
Assignee: North American Mills Inc
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Filing: 1972-08-03
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Granted: 1974-04-09
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Expires: 1992-08-03
Abstract
Abstract A dye system in which materials are bathed in a dyebath formed of a dye dissolved in a substantially anhydrous liquid ammonia. A mono-hydroxy lower alkyl alcohol is added as a leveling agent and to improve hand.
Inventors
- 👤 H Prieto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:10
CPC Classifications
D; D06; D06P; D06P1/00; D06P1/44; D06P1/64; D06P1/651; D06P1/65106; D06P1/65118; D06P1/81
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
22 words
A dyebath as defined in claim 1 wherein said alcohol is selected from the group consisting of methanol, ethanol, n-propanol and isopropanol.
Claim 2
Dependent Claim
24 words
A dyebath as defined in claim 1 wherein said dyestuff is selected from the group consisting of direct, disperse, naphthol, reactive and sulfur dyes.
Claim 3
Dependent Claim
12 words
A dyebath as defined in claim 1 wherein said alcohol is isopropanol.
Claim 4
Dependent Claim
12 words
A dyebath as defined in claim 1 wherein said alcohol is n-propanol.
Claim 5
Dependent Claim
12 words
A dyebath as defined in claim 1 wherein said alcohol is ethanol.
Claim 6
Dependent Claim
12 words
A dyestuff as defined in claim 1 wherein said alcohol is methanol.
Claim 7
Dependent Claim
34 words
In a method of dyeing organic materials by applying to said materials a dyebath of liquid ammonia having a dyestuff dissolved therein, the improvement comprising adding a mono-hydroxy lower alkyl alcohol to said dyebath.
Claim 8
Dependent Claim
26 words
In a method as defined in claim 8 wherein said mono-hydroxy lower alkyl alcohol is selected from the group consisting of methanol, ethanol, n-propanol and isopropanol.
Claim 9
Dependent Claim
16 words
In a method as defined in claim 8 wherein said mono-hydroxy lower alkyl alcohol is isopropanol.
Claim 10
Independent Claim
34 words
A method of dyeing organic materials from a dyebath comprising the steps of dissolving a dyestuff in a solvent of liquid ammonia to form said dyebath and adding thereto a mono-hydroxy lower alkyl alcohol.
Claim 11
Dependent Claim
25 words
Method as defined in claim 11 wherein said mono-hydroxy lower alkyl alcohol is admixed with said ammonia prior to dissolving said dyestuff in said ammonia.
Claim 12
Dependent Claim
23 words
Method as defined in claim 11 wherein said dyestuff is selected from the group consisting of direct, disperse, naphthol, reactive and sulfur dyes.
Claim 13
Dependent Claim
12 words
Method as defined in claim 11 wherein said dyestuff is direct dye.
Claim 14
Dependent Claim
13 words
Method as defined in claim 11 wherein said dyestuff is a disperse dye.
Claim 15
Dependent Claim
13 words
Method as defined in claim 11 wherein said dyestuff is a naphthol dye.
Claim 16
Dependent Claim
13 words
Method as defined in claim 11 wherein said dyestuff is a reactive dye.
Claim 17
Dependent Claim
13 words
Method as defined in claim 11 wherein said dyestuff is a sulfur dye.
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) | 1977-04-08 | 1977-10-08 | 1978-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-08 | 1981-10-08 | 1982-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-08 | 1985-10-08 | 1986-04-09 | $7700.00 | Window Closed / Lapsed |