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US3986827A
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Storage-stable concentrated aqueous solution of disazo acid dye
Assignee: EIDP Inc
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Filing: 1974-05-20
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Granted: 1976-10-19
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Expires: 1994-05-20
Abstract
Abstract Storage-stable, concentrated, aqueous, disazo acid dye solution consisting essentially of 10-25 weight % of the lithium or tri(2-hydroxyethyl)ammonium salt of ##SPC1## Wherein one of X and Y is H and the other is CH 3 and R 1 is CH 2 CH 2 OH, CH 2 CH(CH 3 )OH or CH 2 CH(C 2 H 5 )OH, 5-25 weight % of N-methyl-2-pyrrolidone and the balance, to 100%, water.
Inventors
- 👤 Steven Arnold Dombchik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:14
CPC Classifications
C; C09; C09B; C09B31/00; C09B31/02; C09B31/06; C09B31/062; C09B31/065; C09B67/00; C09B67/0071; C09B67/0072; C09B67/0073; C09B69/00; C09B69/02; Y; Y10; Y10S; Y10S8/00; Y10S8/92; Y10S8/924; Y10S8/925
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
74 words
Storage-stable, concentrated, aqueous, disazo acid dye solution consisting essentially of, on a weight basis, a. 10-25% of the lithium salt of the dye having the formula ##SPC3## wherein one of X and Y is H and the other is CH 3 and R 1 is CH 2 CH 2 OH, CH 2 CH(CH 3 )OH or CH 2 CH(C 2 H 5 )OH; b. 5-25% of N-methyl-2-pyrrolidone; and c. the balance, to 100%, water.
Claim 2
Dependent Claim
74 words
Storage-stable, concentrated, aqueous, disazo acid dye solution consisting essentially of, on a weight basis, a. 10-25% of the lithium salt of the dye having the formula ##SPC3## wherein one of X and Y is H and the other is CH 3 and R 1 is CH 2 CH 2 OH, CH 2 CH(CH 3 )OH or CH 2 CH(C 2 H 5 )OH; b. 5-25% of N-methyl-2-pyrrolidone; and c. the balance, to 100%, water.
Claim 3
Dependent Claim
39 words
The dye solution of claim 1 wherein component (a) is the lithium salt of the dye of the formula wherein R 1 is CH 2 CH(C 2 H 5 )OH, X is H and Y is CH 3 .
Claim 4
Dependent Claim
37 words
The dye solution of claim 1 wherein component (a) is the lithium salt of the dye of the formula wherein R 1 is CH 2 CH(CH 3 )OH, X is H and Y is CH 3 .
Claim 5
Dependent Claim
37 words
The dye solution of claim 1 wherein component (a) is the lithium salt of the dye of the formula wherein R 1 is CH 2 CH 2 OH, X is H and Y is CH 3 .
Claim 6
Dependent Claim
38 words
The dye solution of claim 1 wherein component (a) is the lithium salt of the dye of the formula wherein R 1 is CH 2 CH(C 2 H 5 )OH, X is CH 3 and Y is H.
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) | 1979-10-19 | 1980-04-19 | 1980-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-10-19 | 1984-04-19 | 1984-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-10-19 | 1988-04-19 | 1988-10-19 | $7700.00 | Window Closed / Lapsed |