US3768968A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyester dye with dye in methylene chloride and a chlorofluoroalkane
Assignee: Hoechst AG
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Filing: 1972-01-18
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Granted: 1973-10-30
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Expires: 1992-01-18
Abstract
Abstract Process for the dyeing of synthetic textile materials, by treating said textile material with a dyebath consisting of a solution or dispersion of an organic dyestuff in a halogenated methane or ethane derivative of the general formula
Inventors
- 👤 W Kunze
- 👤 F Schon
- 👤 Der Eltz H Van
- 👤 W Birke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:34
CPC Classifications
D; D06; D06P; D06P1/00; D06P1/90; D06P1/92; D06P1/922; D06P1/924; D06P1/928; Y; Y10; Y10S; Y10S8/00; Y10S8/933
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
21 words
A procEss according to claim 1 wherein said halogenated methane or ethane and said methylene chloride are an azeotropic mixture thereof.
Claim 2
Dependent Claim
35 words
A process according to claim 1 wherein said halogenated methane or ethane and said methylene chloride are in a weight ratio of 50% to 99% of the former to 50% to 1% of the latter.
Claim 3
Dependent Claim
35 words
A process according to claim 1 wherein said halogenated methane or ethane and said methylene chloride are in a weight ratio of 85% to 99% of the former to 15% to 1% of the latter.
Claim 4
Dependent Claim
29 words
A process according te claim 1 wherein said textile material is impregnated with said dyebath in an amount of about 50% to about 150% by weight of said material.
Claim 5
Dependent Claim
29 words
A process according to claim 1 wherein said textile material is impregnated with said dyebath in an amount of about 70% to about 90% by weight of said material.
Claim 6
Dependent Claim
22 words
A process according to claim 1 wherein said dyebath contains about 0.1% to about 5% by weight of a surface active agent.
Claim 7
Dependent Claim
22 words
A process according to claim 1 wherein said dyebath contains about 0.5% to about 1% by weight of a surface active agent.
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) | 1976-10-29 | 1977-04-30 | 1977-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-29 | 1981-04-30 | 1981-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-29 | 1985-04-30 | 1985-10-30 | $7700.00 | Window Closed / Lapsed |