Patent US3609180A successfully refreshed from Google Patents.
US3609180A
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Process for preparing carboxylic acid esters of unsaturated alcohols
Assignee: Individual
•
Filing: 1966-08-22
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Granted: 1971-09-28
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Expires: 1986-08-22
Abstract
Abstract A process for preparing the corresponding carboxylic acid esters of unsaturated alcohols by contacting olefins with aliphatic carboxylic acids in the presence of a gas selected from the group consisting of oxygen and oxygen-containing gases, using as catalyst a palladium salt and a copper salt, the improvement which comprises effecting the reaction in the presence of an organo-quaternary ammonium compound, said ammonium compound being one which does not have hydrogen directly linked to nitrogen and which can form under reaction conditions a carboxylic acidsoluble complex with said palladium salt.
Inventors
- 👤 Hiroshi Shigematsu
- 👤 Yasushi Shibahara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:23
CPC Classifications
D; D04; D04B; D04B11/00; C; C07; C07C; C07C67/00; C07C67/04; C07C67/05; C07C67/055
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
15 words
The process of claim 1 wherein said organo-quaternary ammonium compound is said organo-quaternary ammonium halide.
Claim 2
Dependent Claim
18 words
The process according to claim 2 wherein the halogen ion of said organo-quaternary ammonium halide is chlorine ion.
Claim 3
Dependent Claim
15 words
The process of claim 1 wherein said organo-quaternary ammonium compound is said organo-quaternary ammonium hydroxide.
Claim 4
Dependent Claim
22 words
The process of claim 1 wherein said organo-quaternary ammonium compound is selected from the group consisting of betaine and said derivatives thereof.
Claim 5
Dependent Claim
23 words
The process of claim 1 wherein said organo-quaternary ammonium compound is selected from the group consisting of said amine-N-oxides and the hydrohalides thereof.
Claim 6
Dependent Claim
45 words
The process according to claim 6 wherein the hydrohalide of said amine oxide is an aqueous solution containing an amine oxide and a hydrohalide, said hydrohalide of amine oxide being formed in the reaction zone when said aqueous solution is added to the reaction system.
Claim 7
Dependent Claim
27 words
The process according to claim 1 wherein said lower alkanoic acid is an acid selected from the group consisting of acetic, propionic, butyric, valeric and caproic acids.
Claim 8
Dependent Claim
17 words
The process according to claim 1 wherein said carboxylic acid esters of unsaturated alcohols are vinyl acetate.
Claim 9
Dependent Claim
25 words
The process according to claim 1 wherein said palladium salt is a member selected from the group consisting of halides and aliphatic carboxylates of palladium.
Claim 10
Dependent Claim
24 words
The process according to claim 1 wherein said copper salt is a member selected from the group consisting of halides and carboxylates of copper.
Claim 11
Dependent Claim
29 words
The process according to claim 1 wherein said organo-quaternary ammonium compound is used in an amount of 0.001 to 1.0 mol per 1,000 cc. of the aliphatic carboxylic acid.
Claim 12
Dependent Claim
20 words
The process according to claim 1 wherein said reaction is effected at a temperature ranging between 50* and 140* C.
Claim 13
Dependent Claim
36 words
The process according to claim 1 wherein said reaction is effected in the presence of at least one member selected from the group consisting of alkali metal salts of aliphatic carboxylic acids and alkali metal halides.
Claim 14
Dependent Claim
22 words
The process according to claim 14 wherein the metal of said alkali metal salt is a member selected from lithium and sodium.
Claim 15
Dependent Claim
30 words
The process according to claim 14 wherein said alkali metal halide is used in an amount of not more than 1.0 mol per 1,000 cc. of said lower alkanoic acid.
Claim 16
Dependent Claim
31 words
The process according to claim 14 wherein said alkali metal carboxylate is used in an amount of not more than 6 mols per 1, 000 cc. of said lower alkanoic acid.
References Cited (Backward Citations)
BE615596A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-27 | 1975-03-29 | 1975-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-27 | 1979-03-29 | 1979-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-27 | 1983-03-29 | 1983-09-28 | $7700.00 | Window Closed / Lapsed |