US3575866A
Expired / Lapsed
US
⏱️ 0.0 years remaining
New brighteners,compositions thereof and processes for using same
Assignee: GAF Corp
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Filing: 1969-11-19
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Granted: 1971-04-20
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Expires: 1989-11-19
Abstract
Abstract A BRIGHTENER COMPOSITION PARTICULARLY ADAPTED FOR THE BRIGHTENING OF POLYESTERS COMPRISING (A) A COMPOUND OF THE FORMULA: 2-((PHENYL)-CH=CH-(1,4-PHENYLENE)-)- 2H-ANTHRO(2,3-D)TRIAZOLE AND (B) A NON-IONIC SURFACTANT. WHEN SUCH A COMPOSITION IS EMPLOYED FOR BRIGHTENING OF A POLYESTER-COTTON BLEND, SUCH COMPOSITION MAY ADDITIONALLY CONTAIN A STILBENECYANURIC BRIGHTENER. THE ACTIVE BRIGHTENER IS PRECIPITATED BY DROWNING THE ABOVE COMPOSITION, EITHER ALONE OR TOGETHER WITH A SUITABLE DETERGENT IN THE WASH WATER.
Inventors
- 👤 Albert F Strobel
- 👤 Sigmund C Catino
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:35
CPC Classifications
C; C07; C07D; C07D249/00; C07D249/16; C07D249/22; C07D249/24; C11; C11D; C11D3/00; C11D3/40; C11D3/42; D; D06; D06L; D06L4/00; D06L4/60; D06L4/65
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-04-19 | 1974-10-19 | 1975-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-19 | 1978-10-19 | 1979-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-19 | 1982-10-19 | 1983-04-20 | $7700.00 | Window Closed / Lapsed |