US3879475A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for the preparation of biodegradable glycidol surfactants
Assignee: Olin Corp
•
Filing: 1973-01-10
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Granted: 1975-04-22
•
Expires: 1993-01-10
Abstract
Abstract This invention relates to a novel method of preparing biodegradable glycidol surfactants by reacting selected aliphatic alcohols with glycidol in the presence of a polar, non-reactive, miscible solvent and to the surfactants produced by such method.
Inventors
- 👤 John A Wojtowicz
- 👤 Milton Lapkin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:27
CPC Classifications
C; C11; C11D; C11D1/00; C11D1/66; C11D1/72; Y; Y10; Y10S; Y10S516/00; Y10S516/01; Y10S516/02; Y10S516/905; Y10S516/917
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
14 words
THE METHOD FOR PREPARING SURFACTANTS COMPRISING REACTING: A. AN ALIPHATIC ALCOHOL HAVING THE FORMULA:
Claim 2
Independent Claim
14 words
THE METHOD FOR PREPARING SURFACTANTS COMPRISING REACTING: A. AN ALIPHATIC ALCOHOL HAVING THE FORMULA:
Claim 3
Dependent Claim
29 words
The method of claim 1 wherein said Lewis acid is selected from the group consisting of BF3, BFetherate, SnCl4, TiCl4, SbCl5, HF, AlCl3, Al(C2H5)3, AlBr3, FeCl3, ZnCl2 and ZnBr2.
Claim 4
Dependent Claim
12 words
The method of claim 2 wherein said Lewis acid is BF3 etherate.
Claim 5
Dependent Claim
21 words
The method of claim 3 wherein said reaction is carried out at a temperature of from about 40* to about 75*C.
Claim 6
Dependent Claim
25 words
The method of claim 4 wherein R contains 10 to 18 carbons and the molar ratio of glycidol to alcohol is from 6:1 to 12:1.
Claim 7
Dependent Claim
12 words
The method of claim 5 wherein said Lewis acid is BF3 etherate.
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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) | 1978-04-21 | 1978-10-21 | 1979-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-21 | 1982-10-21 | 1983-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-21 | 1986-10-21 | 1987-04-22 | $7700.00 | Window Closed / Lapsed |