US3892525A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tertiary alkanolamines to reduce ozone fading of dyed polyamide fibers
Assignee: Honeywell International Inc
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Filing: 1972-10-30
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Granted: 1975-07-01
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Expires: 1992-10-30
Abstract
Abstract When from about 0.3% to about 8% of tertiary amines formed by the reaction between I (A) diepoxides and/or polyepoxides and (B) secondary amines, or between II (A) diepoxides and (B) ammonia, primary amines, and/or primary tertiary diamines ARE COATED ON NYLON FIBER, OR ARE ADDED TO THE DYEBATH OR ARE COATED ON DYED FIBERS, IMPROVED DYEFASTNESS TO OZONE IS OBTAINED COMPARED TO AN UNTREATED DYED NYLON FIBER.
Inventors
- 👤 Robert Alden Lofquist
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:26
CPC Classifications
D; D06; D06P; D06P3/00; D06P3/02; D06P3/04; D06P3/24; D06P1/00; D06P1/44; D06P1/52; D06P1/64; D06P1/642; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31725; Y10T428/31739
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
43 words
A COMPOSITION OF MATTER COMPRISING FROM ABOUT 92 TO ABOUT 99.9% BY WEIGHT OF A POLYCARBONAMIDE AND FROM ABOUT 0.1 TO ABOUT 8% BY WEIGHT OF A COMPOUND COATED ON SAID POLYCARBONAMIDE SELECTED FROM THE GROUP CONSISTING OF COMPOUNDS HAVING AT LEAST TWO
Claim 2
Dependent Claim
43 words
A COMPOSITION OF MATTER COMPRISING FROM ABOUT 92 TO ABOUT 99.9% BY WEIGHT OF A POLYCARBONAMIDE AND FROM ABOUT 0.1 TO ABOUT 8% BY WEIGHT OF A COMPOUND COATED ON SAID POLYCARBONAMIDE SELECTED FROM THE GROUP CONSISTING OF COMPOUNDS HAVING AT LEAST TWO
Claim 3
Dependent Claim
21 words
The composition of claim 1 wherein said compound is created by the reaction of a diepoxide with a secondary alkyl amine.
References Cited (Backward Citations)
US2132074A
Cited
US3794464A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-06-30 | 1978-12-30 | 1979-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-30 | 1982-12-30 | 1983-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-30 | 1986-12-30 | 1987-07-01 | $7700.00 | Window Closed / Lapsed |