Patent US3666400A successfully refreshed from Google Patents.
US3666400A
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US
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Sizing of yarns and fibers with combinations of polymers and crosslinking agents
Assignee: United States Department of Agriculture
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Filing: 1970-03-10
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Granted: 1972-05-30
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Expires: 1990-03-10
Abstract
Abstract THIS INVENTION RELATES TO A PROCESS FOR PRODUCING A DURABLE-PRESS FABRIC HAVING A SUPERIOR ABRASION RESISTANCE. CELLULOSIC TEXTILE YARNS ARE SIZED WITH A COMBINATION OF A PERMANENT POLYMER, A TEMPORARY POLYMER AND A CROSSLINKING AGENT PRIOR TO WEAVING. THE PERMANENT POLYMER INCLUDES POLYURETHANES, POLYACRYLATES, BUTADIENE-STYRENE COPOLYMERS, BUTADIENE-ACRYLONITRILE COPOLYMERS, AND ETHYLENE-VINYLACETATE COPOLYMERS. A TEMPORARY POLYMER IS POLYVINYL ALCOHOL. CROSSLINKING AGENTS INCLUDE DIMETHYLOL DIHYDROXY-ETHYLENUREA (DMDHEU), DIMETHYLOL METHOXYETHYLACARBAMATE, METHYLOL MELAMINE, AND DIMETHYLOL PROPYLENEUREA.
Inventors
- 👤 John T Lofton
- 👤 Robert J Harper Jr
- 👤 Eugene J Blanchard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:39
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/21; D06M15/263; D06M15/267; D06M15/37; D06M15/39; D06M15/423; D06M15/564; Y; Y10; Y10T; Y10T442/00; Y10T442/20; Y10T442/273; Y10T442/30; Y10T442/3049
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) | 1975-05-30 | 1975-11-29 | 1976-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-30 | 1979-11-29 | 1980-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-30 | 1983-11-29 | 1984-05-30 | $7700.00 | Window Closed / Lapsed |