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US3753971A
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US
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Composition and process for cross-linking macromolecular polysacchar ide solutions
Assignee: Milchem Inc
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Filing: 1972-08-21
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Granted: 1973-08-21
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Expires: 1992-08-21
Abstract
Abstract A CROSS-LINKING AGENT FOR MACROMOLECULAR POLYSACCHARIDE MATERIALS CONSISTING ESSENTIALLY OF A CHELATING COMPOSITION FORMED FROM (1) AND ORGANIC POLYELECTROLYTE LIGAND COMPONENT, AND (2) A COMPONENT OF A METAL OF THE FIRST SERIES OF THE TRANSITION ELEMENTS OF THE PERIODIC TABLE. THIS CROSS-LINKING AGENT HAS BEEN FOUND TO PROVIDE ENHANCED RHEOLOGICAL PROPERTIES WITHOUT OBTAINING METAL ION OVERTREATMENT CHARACTERISTICS. IN A PREFERRED FORM, SAID CROSS-LINKING AGENT ALSO INCLUDES A COMPOUND CONTAINING A METAL FROM GROUP II OF THE PERIODIC TABLE. THE CROSS-LINKED MATERIALSMAY BE UTILIZED IN TEXTILE SIZING AGENTS, PAINTS, DRILLING FLUIDS, AND THE LIKE.
Inventors
- 👤 W Browning
- 👤 B Chester
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:22
CPC Classifications
C; C08; C08B; C08B31/00; C08B31/003; C08B15/00; C08B15/10; C08B37/00; C09; C09K; C09K8/00; C09K8/02; C09K8/03; C09K8/035; D; D06; D06M; D06M15/00; D06M15/01; D06M15/03; D06M15/05; D06M15/11
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) | 1976-08-20 | 1977-02-19 | 1977-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-20 | 1981-02-19 | 1981-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-20 | 1985-02-19 | 1985-08-21 | $7700.00 | Window Closed / Lapsed |