US3779796A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sodium propionate coated with sorbitan higher fatty acid ester and process for its preparation
Assignee: Ueno Fine Chemicals Industry Ltd
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Filing: 1971-07-21
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Granted: 1973-12-18
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Expires: 1991-07-21
Abstract
Abstract Non-caking sodium propionate is obtained by coating sodium propionate with a sorbitan higher fatty acid ester such as sorbitan monolaurate. The coating is performed by adding 10-500 ppm by weight of the sorbitan higher fatty acid ester to an aqueous solution of sodium propionate, removing the aqueous medium from the resultant mixture, and drying it. An organic medium may be used instead of the aqueous medium. This coating prevents sodium propionate from caking during storage.
Inventors
- 👤 R Ueno
- 👤 T Miyazaki
- 👤 S Inamine
- 👤 S Kishi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 08:00
CPC Classifications
B; B01; B01J; B01J2/00; B01J2/30; A; A23; A23P; A23P10/00; A23P10/30; C; C07; C07C; C07C51/00; C07C51/42; C07C51/50
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
37 words
The non-caking sodium propionate of claim 1 wherein said sorbitan higher fatty acid ester is an ester of sorbitan with a fatty acid having 12 to 18 carbon atoms, said ester being substantially colorless, odorless and non-toxic.
Claim 2
Dependent Claim
34 words
The non-caking sodium propionate of claim 1 wherein said sorbitan higher fatty acid ester is selected from the group consisting of sorbitan monolaurate, sorbitan monopalmitate, sorbitan monostearate, sorbitan tristearate, sorbitan monooleate, and sorbitan trioleate.
Claim 3
Dependent Claim
28 words
The non-caking sodium propionate of claim 1 wherein said sorbitan higher fatty acid ester is selected from the group consisting of sorbitan monolaurate, sorbitan monooleate and sorbitan trioleate.
Claim 4
Dependent Claim
30 words
The non-caking sodium propionate of claim 1 wherein the amount of said sorbitan higher fatty acid ester is 30 to 300 ppm based on the weight of the sodium propionate.
References Cited (Backward Citations)
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US2183173A
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US2830906A
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US2932574A
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US3008986A
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US3164476A
Cited
US3507665A
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US3459798A
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US3617299A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-12-17 | 1977-06-18 | 1977-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-17 | 1981-06-18 | 1981-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-17 | 1985-06-18 | 1985-12-18 | $7700.00 | Window Closed / Lapsed |