US3211564A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuous high temperature process for oxidized starch for coating compositions
Assignee: Kimberly Clark Corp
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Filing: 1961-06-13
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Granted: 1965-10-12
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Expires: 1981-06-13
Abstract
No abstract record available.
Inventors
- 👤 George E Lauterbach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:51
CPC Classifications
D; D21; D21H; D21H19/00; D21H19/36; D21H19/44; D21H19/54; C; C08; C08B; C08B31/00; C08B31/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
140 words
IN THE PROCESS OF PREPARING STARCH FOR USE IN PAPER COATING COMPOSITION, THE STEPS OF FORMING AN AQUEOUS SLURRY CONTAINING RAW STARCH AND A WATER-SOLUBLE OXIDIZING AGENT IN WHICH THE OXIDIZING AGENT IS PRESENT IN SOLUTION, FEEDING THE SAID AQUEOUS SLURRY CONTINUOUSLY THROUGH A HEATING AND MIXING ZONE, HEATING THE SLURRY INSAID ZONE TO A TEMPERATURE WELL ABOE THE GELATINIZATION RANGE OF THE STARCH AND IN THE RANGE OF BETWEEN ABOUT 220*F. AND 350*F. WHILE SUBJECTING THE SLURRY TO A MIXING ACTION TO EFFECT THOROUGH DISPERSION OF THE OXIDIZING AGENT IN THE SLURRY, AND MAINTAINING THE FEEDING SLURRY SO HEATED IN THE SAID ZONE FOR A TIME PERIOD TO COOK THE STARCH AND TO SUBSTANTIALLY CONSUME THE OXIDIZING AGENT BY REACTION WITH THE STARCH, AND PASSING THE FEEDING HOT, COOKED, OXIDIZED STARCH FROM THE HEATING ZONE TO A RECEIVING ZONE.
Claim 2
Dependent Claim
140 words
IN THE PROCESS OF PREPARING STARCH FOR USE IN PAPER COATING COMPOSITION, THE STEPS OF FORMING AN AQUEOUS SLURRY CONTAINING RAW STARCH AND A WATER-SOLUBLE OXIDIZING AGENT IN WHICH THE OXIDIZING AGENT IS PRESENT IN SOLUTION, FEEDING THE SAID AQUEOUS SLURRY CONTINUOUSLY THROUGH A HEATING AND MIXING ZONE, HEATING THE SLURRY INSAID ZONE TO A TEMPERATURE WELL ABOE THE GELATINIZATION RANGE OF THE STARCH AND IN THE RANGE OF BETWEEN ABOUT 220*F. AND 350*F. WHILE SUBJECTING THE SLURRY TO A MIXING ACTION TO EFFECT THOROUGH DISPERSION OF THE OXIDIZING AGENT IN THE SLURRY, AND MAINTAINING THE FEEDING SLURRY SO HEATED IN THE SAID ZONE FOR A TIME PERIOD TO COOK THE STARCH AND TO SUBSTANTIALLY CONSUME THE OXIDIZING AGENT BY REACTION WITH THE STARCH, AND PASSING THE FEEDING HOT, COOKED, OXIDIZED STARCH FROM THE HEATING ZONE TO A RECEIVING ZONE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-10-11 | 1969-04-12 | 1969-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-11 | 1973-04-12 | 1973-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-11 | 1977-04-12 | 1977-10-12 | $7700.00 | Window Closed / Lapsed |