US3598622A
Expired / Lapsed
US
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Alkali treated starch compositions
Assignee: Unilever Bestfoods North America
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Filing: 1969-02-19
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Granted: 1971-08-10
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Expires: 1989-02-19
Abstract
Abstract A METHOD IS DESCRIBED FOR PRODUCING AN IMPROVED GRANULAR STARCH PRODUCT WHICH COMPRISES SUSPENDING A BLEACHED, OXIDIZED, OR ANIONIC STARCH IN AN ALKALINE AQUEOUS SOLUTION, ACIDIFYING THE SOLUTION, AND RECOVERING AN ALKALI TREATED STARCH PRODUCT. THE USE OF THE IMPROVED STARCH PRODUCT PRODUCED AS DESCRIBED ABOVE AS A WET END ADDITIVE, A COATING COLOR BINDER, AND A SIZE IN THE MANUFACTURE OF PAPER IS DISCLOSED. ALSO REVEALED IS THE LOWERING OF THE PEAK VISCOSITY DURING GELATINIZATION WHICH IS ATTAINED WHEN BLEACHED OR OXIDIZED STARCH IS ALKALI TREATED PRIOR TO GELATINIZATION.
Inventors
- 👤 Thomas Kearney Maher
- 👤 Howard Paul Francis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:25
CPC Classifications
D; D21; D21H; D21H19/00; D21H19/36; D21H19/44; D21H19/54; C; C08; C08B; C08B31/00; C09; C09J; C09J103/00; C09J103/02; D21H17/00; D21H17/20; D21H17/21; D21H17/24; D21H17/28; C08L; C08L2666/00; C08L2666/02
Claims Analysis
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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) | 1974-08-09 | 1975-02-08 | 1975-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-09 | 1979-02-08 | 1979-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-09 | 1983-02-08 | 1983-08-10 | $7700.00 | Window Closed / Lapsed |