US3635957A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Styryl dyes
Assignee: American Aniline Products Inc
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Filing: 1969-05-20
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Granted: 1972-01-18
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Expires: 1989-05-20
Abstract
Abstract WATER-INSOLUBLE DISPERSE YELLOW DYES, PARTICULARY SUITABLE AS COLORANTS FOR POLYESTER FIBERS, ARE PROVIDED. THE DYES ARE MADE FROM A BENZALDEHYDE INTERMEDIATE HAVING AS PART OF ITS STRUCTURE A 2-MERCAPTOBENZOTHIAZOLE OR A THIAZOLINETHIOL BY REACTING THE IMTERMEDIATE WITH A NITRILE CONTAINING AN ACTIVE METHYLENE GROUP, SUCH AS MALONONITRILE. THE NEW DYES GIVE DYEINGS ON POLYETHYLENE TEREPHTHALATE FIBERS OF OUTSTANDING FASTNESS PROPERTIES.
Inventors
- 👤 Guido R Genta
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:48
CPC Classifications
C; C07; C07D; C07D277/00; C07D277/02; C07D277/08; C07D277/12; C07D277/16; C07D277/60; C07D277/62; C07D277/68; C07D277/70; C07D277/74; C08; C08K; C08K5/00; C08K5/36; C08K5/45; C08K5/46; C08K5/47; C09; C09B; C09B23/00; C09B23/14; C09B23/143; Y; Y10; Y10S; Y10S8/00; Y10S8/92; Y10S8/922
Claims Analysis
Total Claims: 0
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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) | 1975-01-17 | 1975-07-19 | 1976-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-17 | 1979-07-19 | 1980-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-17 | 1983-07-19 | 1984-01-18 | $7700.00 | Window Closed / Lapsed |