Patent US2968581A successfully refreshed from Google Patents.
US2968581A
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Method of insolubilizing polymeric hydroxyl-bearing compounds
Assignee: QUAKER CHEMICAL PRODUCTS Corp
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Filing: 1957-01-15
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Granted: 1961-01-17
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Expires: 1977-01-15
Abstract
No abstract record available.
Inventors
- 👤 Bernard H Kress
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:55
CPC Classifications
C; C08; C08B; C08B37/00; C08G; C08G4/00; D; D06; D06M; D06M13/00; D06M13/10; D06M13/137; D06M15/00; D06M15/01; D06M15/03; D06M15/11; Y; Y10; Y10T; Y10T428/00; Y10T428/23907; Y10T428/23943; Y10T428/31504; Y10T428/31971; Y10T428/31975; Y10T428/31978; Y10T428/31986; Y10T442/00; Y10T442/20; Y10T442/2361
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
119 words
THE METHOD OF STIFFENING TEXTILE MATERIALS WHICH COMPRISES APPLYING TO SAID TEXTILE MATERIALS AN AQUEOUS COMPOSITION CONTAINING A HYDROXYL-BEARING MATERIAL SELECTED FROM THE GROUP CONSISTING OF STARCHES, MODIFIED STARCHES, DEXTRINES, POLYVINYL ESTERS, ETHERS AND ALCOHOLS, WATER-SOLUBLE CELLULOSE DERIVATIVES, NATURAL GUMS, AND DEXTRAN, AN ACIDIC CATALYST AND A PREFORMED POLYMERIC ACETAL, SAID POLYMERIC ACETAL HAVING AT LEAST TWO ALKYLIDENE RADICALS DERIVED FROM AT LEAST ONE ALDEHYDE HAVING UP TO 10 CARBON ATOMS AND AT LEAST TWO ALKYLENE RADICALS CONTAINING 2 TO 4 CARBON ATOMS IN A STRAIGHT CHAIN DERIVED FROM A COMPOUND SELECTED FROM THE GROUP CONSISTING OF MONOALKYLENE GLYCOLS, POLYALKYLENE GLYCOLS AND ALKYLENE OXIDES, AND DRYING THE TREATED TEXTILE MATERIALS AT ELEVATED TEMPERATURE UNTIL THE TEXTILE MATERIALS ARE STIFFENED.
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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) | 1964-01-17 | 1964-07-18 | 1965-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-17 | 1968-07-18 | 1969-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-17 | 1972-07-18 | 1973-01-17 | $7700.00 | Window Closed / Lapsed |