US2808348A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sizing for nylon yarns
Assignee: Monsanto Chemicals Ltd
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Filing: 1954-12-15
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Granted: 1957-10-01
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Expires: 1974-12-15
Abstract
No abstract record available.
Inventors
- 👤 Alva F Harris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:20
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/21; D06M15/263; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2964; Y10T428/2967; Y10T428/2969
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
145 words
A METHOD OF SIZING WATER-INSOLUBLE NYLON WARP YARNS TO PREPARE THEM FOR WEAVING WHICH COMPRISES TREATING SAID YARNS WITH AN AQUEOUS SOLUTION COMPRISING ABOUT 2 TO 15% BY WEIGHT OF A WATER OF A SOLUBLE TERPOLYMER OF VINYL ACETATE, MALEIC ANHYDRIDE AND A BETA ALKOXY ETHYL PARTIAL ESTER OF MALEIC ACID IN WHICH THE ALKOXY GROUP CONTAINS FROM 1 TO 4 CARBON ATOMS, SAID SOLUTION BEING SUPPLIED IN AN AMOUNT SUFFICIENT TO DEPOSIT ABOUT 0.5 TO 10% BY WEIGHT, BASED ON THE DRY YARNS, OF SAID TERPOLYMER, AND THEN DRYING SAID YARNS, IN SAID TERPOLYMER THE MOL PERCENT RATIO OF VINYL ACETATE TO TOTAL MAEIC ANHYDRIDE AND MALEIC PARTICLA ESTER VARYING FROM 52:48 TO 50:50, THE MOL PERCENT RATIO OF MALEIC ANHYDRIDE TO PARTIAL MALEIC ESTER VARYING FROM 40:10 TO 30:20 AND THE DEGREE OF ESTERIFICATION IN THE MALEIC ESTER RANGING FROM 20 TO 50%.
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) | 1960-09-30 | 1961-04-01 | 1961-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-30 | 1965-04-01 | 1965-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-30 | 1969-04-01 | 1969-10-01 | $7700.00 | Window Closed / Lapsed |