US4021260A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Starch viscosity control agent using an ethoxylated fatty alcohol
Assignee: ChampionX LLC
•
Filing: 1976-09-16
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Granted: 1977-05-03
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Expires: 1996-09-16
Abstract
Abstract An improved starch paste which contains from between 5 to 40% by weight of starch and from 0.01 to 5% by weight based on the weight of the starch of a fatty alcohol which has been reacted with from 1 - 20 moles of ethylene oxide.
Inventors
- 👤 Marla S. Crill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:18
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/06; C08K3/00; C08K3/30
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
65 words
A process for preparing an improved gelatinized starch paste which contains from between 5 to 40% by weight of starch which comprises adding to said starch paste prior to gelatinization from 0.01 to 5% by weight based on the weight of the starch of a modified fatty alcohol which has been reacted with 2 - 10 moles of ethylene oxide and then gelatinizing said starch.
Claim 2
Dependent Claim
65 words
A process for preparing an improved gelatinized starch paste which contains from between 5 to 40% by weight of starch which comprises adding to said starch paste prior to gelatinization from 0.01 to 5% by weight based on the weight of the starch of a modified fatty alcohol which has been reacted with 2 - 10 moles of ethylene oxide and then gelatinizing said starch.
Claim 3
Dependent Claim
16 words
The process of claim 1 where the starch is converted in the presence of ammonium persulfate.
References Cited (Backward Citations)
US3211564A
Cited
US3419405A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-05-02 | 1980-11-01 | 1981-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-05-02 | 1984-11-01 | 1985-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-05-02 | 1988-11-01 | 1989-05-03 | $7700.00 | Window Closed / Lapsed |