Patent US3948953A successfully refreshed from Google Patents.
US3948953A
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Dioxolane derivatives having surfactant properties
Assignee: Texaco Inc
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Filing: 1969-08-05
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Granted: 1976-04-06
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Expires: 1989-08-05
Abstract
Abstract This invention concerns water soluble surfactants prepared by introducing solubilizing groups such as sulfates and polyoxyalkylenes into the dioxolane condensates of aliphatic ketones with glycerol.
Inventors
- 👤 David R. McCoy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:52
CPC Classifications
C; C07; C07D; C07D317/00; C07D317/08; C07D317/10; C07D317/14; C07D317/18; C11; C11D; C11D1/00; C11D1/02; C11D1/12; C11D1/34; C11D1/345; C11D1/66; C11D1/72; Y; Y10; Y10S; Y10S516/00; Y10S516/01; Y10S516/03
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
59 words
Solubilized drivatives of 2,2-dialkyl-1,3-dioxolane-4 methylol included within the structure ##EQU3## of which R--C--R' is the residuum of aliphatic ketones R - C - R', wherein R and R' are alkyl groups which contain a total of 6 to 30 carbon atoms and X is a solubilizing group selected from alkoxylates containing 2 to 4 carbon atoms, sulfates and phosphates.
Claim 2
Dependent Claim
59 words
Solubilized drivatives of 2,2-dialkyl-1,3-dioxolane-4 methylol included within the structure ##EQU3## of which R--C--R' is the residuum of aliphatic ketones R - C - R', wherein R and R' are alkyl groups which contain a total of 6 to 30 carbon atoms and X is a solubilizing group selected from alkoxylates containing 2 to 4 carbon atoms, sulfates and phosphates.
Claim 3
Dependent Claim
22 words
The solubilized derivatives of claim 1 wherein the aliphatic ketones comprise a mixture of different ketones containing 10 to 15 carbon atoms.
Claim 4
Dependent Claim
12 words
The solubilized derivatives of claim 2 wherein the solubilizing group is ethoxylate.
Claim 5
Dependent Claim
12 words
The solubilized derivatives of claim 2 wherein the solubilizing group is sulfate.
Claim 6
Dependent Claim
14 words
The solubilizing derivative of claim 3 containing from 1 to 20 moles of Ethoxylate.
Claim 7
Dependent Claim
61 words
A process for sulfating the dioxolane condensates of glycerol and aliphatic ketones wherein the aliphatic groups of the ketones total at least 6 carbon atoms, comprising contacting a dialkyl ether-chlorosulfonic acid complex containing at least a stoichiometric quantity of chlorosulfonic acid with said condensates at 25° C. to +30° C. until at least one sulfate group is added to said condensates.
Claim 8
Dependent Claim
61 words
A process for sulfating the dioxolane condensates of glycerol and aliphatic ketones wherein the aliphatic groups of the ketones total at least 6 carbon atoms, comprising contacting a dialkyl ether-chlorosulfonic acid complex containing at least a stoichiometric quantity of chlorosulfonic acid with said condensates at 25° C. to +30° C. until at least one sulfate group is added to said condensates.
Claim 9
Dependent Claim
22 words
The process of claim 6 wherein the aliphatic ketones comprise a mixture of aliphatic ketones containing from 10 to 15 carbon atoms.
Claim 10
Dependent Claim
29 words
The process of claim 6 wherein the molar ratio of dialkyl ether to chlorosulfonic acid varies from 0.5 to 4.0 moles of the ether for each mole of acid.
Claim 11
Dependent Claim
7 words
The sulfated dioxolane condensates of claim 6.
Claim 12
Dependent Claim
19 words
Salts of sulfated 2,2-dialkyl-4-hydroxymethyl-1,3-dioxolane, wherein the cation is selected from the group consisting of ammonium and the alkali metals.
Claim 13
Dependent Claim
19 words
Salts of sulfated 2,2-dialkyl-4-hydroxymethyl-1,3-dioxolane, wherein the cation is selected from the group consisting of ammonium and the alkali metals.
Claim 14
Dependent Claim
5 words
The ammonium salt of 2,2-dialkyl-4-hydroxymethyl-1,3-dioxolane.
Claim 15
Dependent Claim
5 words
The ammonium salt of 2,2-dialkyl-4-hydroxymethyl-1,3-dioxolane.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-04-06 | 1979-10-06 | 1980-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-04-06 | 1983-10-06 | 1984-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-04-06 | 1987-10-06 | 1988-04-06 | $7700.00 | Window Closed / Lapsed |