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US3620823A
Expired / Lapsed
US
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Process of improving the resistance of soiling of melt spun fibers
Assignee: Monsanto Co
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Filing: 1969-05-19
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Granted: 1971-11-16
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Expires: 1989-05-19
Abstract
Abstract Polyamide and polyester fibers are rendered highly resistant to soiling by applying to the fibers during the manufacture thereof a finish comprised of a water-soluble lubricating agent, a silicone, and a tin or zirconium compound, and subsequently scouring the fibers to remove substantially all of the lubricating agent while a major portion of the silicone and metal compounds remains adhered to the fiber.
Inventors
- 👤 Andrew L Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:48
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/53; D06M15/643
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
29 words
A process according to claim 1 wherein the fibers are dried following the application of the lubricating agent and the metal salt and before the silicone is applied thereto.
Claim 2
Dependent Claim
17 words
A process according to claim 1 wherein the fibers are processed into an article prior to scouring.
References Cited (Backward Citations)
CA746860A
Cited
US2747981A
Cited
US2789956A
Cited
US3318659A
Cited
US3348968A
Cited
US3333983A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-11-15 | 1975-05-17 | 1975-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-15 | 1979-05-17 | 1979-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-15 | 1983-05-17 | 1983-11-16 | $7700.00 | Window Closed / Lapsed |