US4029675A
Expired / Lapsed
US
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Process for preparation of lactone-esters
Assignee: Mobil Oil AS
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Filing: 1975-08-13
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Granted: 1977-06-14
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Expires: 1995-08-13
Abstract
Abstract A process for the continuous preparation of lactone-esters which comprises: passing a liquid feed of a branched-chain alkenylsuccinic anhydride containing a chain wherein branching is derived from C 3 to C 10 olefins, and an alcohol in a hydrocarbon solvent through a packed bed of a cationic exchange resin catalyst containing acid groups, in a reaction zone, said reaction zone being maintained at a pressure from about 1 to about 20 atmospheres and at a temperature from about 120° C to about 160° C.
Inventors
- 👤 Albert L. Williams
- 👤 El-Ahmadi I. Heiba
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 02:02
CPC Classifications
C; C07; C07D; C07D307/00; C07D307/02; C07D307/26; C07D307/30; C07D307/32; C07D307/33
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
109 words
A process for the continuous preparation of lactose-esters which comprises: passing a liquid feed of a C 8 -C 300 branched-chain alkenylsuccinic anhydride containing a chain, wherein branching is derived from C 3 to C 10 olefins, and an alcohol or thiol selected from the group consisting of methyl alcohol, hexyl alcohol, trimethylolpropane, octanethiol, ethyl alcohol, n-butyl alcohol, isopropyl alcohol and cyclohexanol in a hydrocarbon solvent through a packed bed of a sulfonated styrene-divinylbenzene copolymer exchange resin catalyst, in a reaction zone, said reaction zone being maintained at a pressure from about 1 to about 20 atmospheres and at a temperature from about 120° C to about 160° C.
Claim 2
Dependent Claim
109 words
A process for the continuous preparation of lactose-esters which comprises: passing a liquid feed of a C 8 -C 300 branched-chain alkenylsuccinic anhydride containing a chain, wherein branching is derived from C 3 to C 10 olefins, and an alcohol or thiol selected from the group consisting of methyl alcohol, hexyl alcohol, trimethylolpropane, octanethiol, ethyl alcohol, n-butyl alcohol, isopropyl alcohol and cyclohexanol in a hydrocarbon solvent through a packed bed of a sulfonated styrene-divinylbenzene copolymer exchange resin catalyst, in a reaction zone, said reaction zone being maintained at a pressure from about 1 to about 20 atmospheres and at a temperature from about 120° C to about 160° C.
Claim 3
Dependent Claim
33 words
The process defined by claim 1 wherein the hydrocarbon solvent is selected from the group consisting of n-octane, n-heptane, methylcyclohexane, benzene, toluene, mixed xylenes, petroleum naphtha, ethylbenzene light petroleum oils and mixtures thereof.
Claim 4
Dependent Claim
26 words
The process of claim 1 wherein said branched-chain alkenylsuccinic anhydride is selected from the group consisting of polypropenylsuccinic anhydride, polyisobutenylsuccinic anhydride, poly-1-butenylsuccinic anhydride, and poly-1-decenylsuccinic anhydride.
Claim 5
Dependent Claim
42 words
The process defined by claim 1 wherein the lactone-ester product contains diesters and acid-esters as additional components, said diester or acid-ester are separated from said product and are passed through a packed bed of said catalyst to produce additional amounts of lactone-ester.
References Cited (Backward Citations)
US3155685A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-06-13 | 1980-12-13 | 1981-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-06-13 | 1984-12-13 | 1985-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-06-13 | 1988-12-13 | 1989-06-14 | $7700.00 | Window Closed / Lapsed |