US3936472A
Expired / Lapsed
US
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Lactone acid synthesis
Assignee: Mobil Oil AS
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Filing: 1973-01-19
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Granted: 1976-02-03
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Expires: 1993-01-19
Abstract
Abstract Alkyl lactone esters or sulfidic esters are prepared by reacting an alkenylsuccinic anhydride with an alcohol or thiol in the presence of an acid-acting catalyst. The esters are useful as dispersants or detergents in aqueous or hydrocarbon systems or they may be further reacted with amines to produce other useful additives for such systems. Esters of monohydroxy alcohols or monothiols or polyhydroxy alcohols or polythiols may be prepared and used in this invention.
Inventors
- 👤 Robert Earl Kinney
- 👤 Albert Lloyd Williams
- 👤 El-Ahmadi Ibrahim Heiba
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:33
CPC Classifications
C; C10; C10M; C10M135/00; C10M135/20; C10M135/22; C07; C07C; C07C235/00; C07C235/02; C07C235/04; C07C235/08; C07D; C07D207/00; C07D207/02; C07D207/18; C07D207/22; C07D207/24; C07D207/26; C07D307/00; C07D307/02; C07D307/26; C07D307/30; C07D307/32; C07D307/33; C08; C08G; C08G63/00; C08G63/02; C08G63/06; C08G63/08; C10M129/00; C10M129/86; C10M129/95; C10M2203/00; C10M2203/10; C10M2203/102; C10M2207/00; C10M2207/02; C10M2207/023; C10M2207/028; C10M2207/28; C10M2207/281; C10M2207/282; C10M2207/283; C10M2207/286; C10M2209/00; C10M2209/02; C10M2209/08; C10M2209/084; C10M2209/10; C10M2209/102; C10M2211/00; C10M2211/04; C10M2211/042; C10M2211/06; C10M2213/00; C10M2213/04; C10M2213/06; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/08; C10M2215/082; C10M2215/24; C10M2215/26; C10M2215/28; C10M2217/00; C10M2217/04; C10M2217/044; C10M2217/045; C10M2217/046; C10M2217/06; C10M2219/00; C10M2219/04; C10M2219/044; C10M2219/046; C10M2219/06; C10M2221/00; C10M2221/02; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/045; C10N; C10N2010/00; C10N2010/04; C10N2040/00; C10N2040/08
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
113 words
A method of producing a lactone ester comprising the step of mixing alkenylsuccinic anhydride, wherein the alkenyl group has from 14 to 190 carbon atoms, with an organic compound having the formula R'"(XH) p , wherein p is from 1 to 4, X is selected from the group consisting of oxygen sulfur and, R'" is alkyl having from 1 to 8 carbon atoms, in the presence of an acid-acting catalyst selected from the group consisting of a liquid acid selected from the group consisting of phosphoric, polyphosphoric, sulfonic, p-toluene sulfonic, phosphonic and hydrogen halide, a cation exchange resin, a crystalline aluminosilicate at least partially in the hydrogen form, and forming said lactone ester.
Claim 2
Independent Claim
113 words
A method of producing a lactone ester comprising the step of mixing alkenylsuccinic anhydride, wherein the alkenyl group has from 14 to 190 carbon atoms, with an organic compound having the formula R'"(XH) p , wherein p is from 1 to 4, X is selected from the group consisting of oxygen sulfur and, R'" is alkyl having from 1 to 8 carbon atoms, in the presence of an acid-acting catalyst selected from the group consisting of a liquid acid selected from the group consisting of phosphoric, polyphosphoric, sulfonic, p-toluene sulfonic, phosphonic and hydrogen halide, a cation exchange resin, a crystalline aluminosilicate at least partially in the hydrogen form, and forming said lactone ester.
Claim 3
Dependent Claim
9 words
The method of claim 1 wherein X is oxygen.
Claim 4
Dependent Claim
9 words
The method of claim 1 wherein p is 1.
Claim 5
Dependent Claim
23 words
The method of claim 1 wherein the organic compound is selected from the group consisting of methyl alcohol, hexyl alcohol, trimethylolpropane and octanethiol.
Claim 6
Dependent Claim
15 words
The method of claim 1 wherein the acid-acting catalyst is a sulfonic acid-ion exchange resin.
Claim 7
Dependent Claim
16 words
A compound prepared by the method of claim 1 wherein p is from 2 to 4.
Claim 8
Dependent Claim
12 words
The compound of claim 6 wherein the organic compound is trimethylol propane.
Claim 9
Dependent Claim
23 words
A compound prepared by the method of claim 1 wherein p is 1 and R'" is alkyl having at least 5 carbon atoms.
Claim 10
Dependent Claim
12 words
The compound of claim 8 wherein the organic compound is hexyl alcohol.
Claim 11
Dependent Claim
15 words
A compound prepared by the method of claim 1 wherein the alkenyl group is polyisobutenyl.
Claim 12
Dependent Claim
11 words
The compound of claim 8 wherein the organic compound is octanethiol.
Claim 13
Dependent Claim
12 words
The compound of claim 8 wherein the organic compound is octyl alcohol.
Claim 14
Dependent Claim
23 words
The compound of claim 10 wherein the average number of carbon atoms of the polyisobutenyl is in the range of 64 to 190.
Claim 15
Dependent Claim
14 words
The method of claim 1 wherein the acid acting catalyst is p-toluene sulfonic acid.
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) | 1979-02-02 | 1979-08-04 | 1980-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-02-02 | 1983-08-04 | 1984-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-02-02 | 1987-08-04 | 1988-02-03 | $7700.00 | Window Closed / Lapsed |