US3723409A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mixed derivatives of polygalactomannans and process of preparing same
Assignee: General Mills Inc
•
Filing: 1970-05-26
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Granted: 1973-03-27
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Expires: 1990-05-26
Abstract
Abstract Carboxyalkyl hydroxyalkyl derivatives of polygalactomannans are prepared by reacting the polygalactomannan with both an alkylene oxide of three to eight carbon atoms and a halo fatty acid of two to four carbons or the alkali metal salts thereof. The products find use as thickeners for aqueous fluids when complexed with dior polyvalent metal ions.
Inventors
- 👤 M Yueh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:19
CPC Classifications
C; C08; C08B; C08B37/00; C08B37/006; C08B37/0087; C08B37/0096
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
72 words
The derivatives of claim 1 wherein the polygalactomannan is guar gum, the alkylene oxide is propylene oxide and the same is used in an amount of about 0.4 to 3.0 equivalents per equivalent of the guar gum, the chloro fatty acid reactant is sodium chloroacetate and the reaction initiator is sodium hydroxide and the same is present in an amount of about 20 to 60 parts by weight of the guar gum.
References Cited (Backward Citations)
US2477544A
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US2523708A
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US2602789A
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US3326890A
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US3350386A
Cited
US3467647A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-03-26 | 1976-09-25 | 1977-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-26 | 1980-09-25 | 1981-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-26 | 1984-09-25 | 1985-03-27 | $7700.00 | Window Closed / Lapsed |