Patent US4592870A successfully refreshed from Google Patents.
US4592870A
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Production of methyl esters and ethylene glycol esters from reaction of carbon monoxide and hydrogen in presence of ruthenium catalyst
Assignee: Union Carbide Corp
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Filing: 1981-11-10
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Granted: 1986-06-03
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Expires: 2001-11-10
Abstract
Abstract This invention produces methyl esters and ethylene glycol esters by reacting carbon monoxide and hydrogen in a homogeneous liquid phase mixture containing a ruthenium carbonyl complex catalyst and an acyl compound. Methyl ester and ethylene glycol ester are the predominant products. These esters are used as precursors in the formation of ethylene glycol, vinyl acylates such as vinyl acetate, ethylene oxide, ethylene carbonate and methanol.
Inventors
- 👤 Bernard D. Dombek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:23
CPC Classifications
C; C07; C07C; C07C29/00; C07C29/15; C07C29/151; C07C29/153; C07C29/156; C07C29/157; C07C29/1512; C07C29/1514
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
102 words
The process for producing methyl and ethylene gylcol esters which comprises reacting carbon monoxide and hydrogen in a homogenous liquid phase mixture comprising a ruthenium carbonyl complex, an acyl compund selected from the group consisting of a carboxylic acid, a carboxylic acid anhydride and mixtures thereof, and a cosolvent which in combination with the acyl compound increases the yield of said ethylene glycol esters at a temperature of between about 50° C. and about 400° C. and a pressure of between about 500 psia. and about 12,500 psia. for a period of time sufficient to produce such esters as the predominant product.
Claim 2
Dependent Claim
102 words
The process for producing methyl and ethylene gylcol esters which comprises reacting carbon monoxide and hydrogen in a homogenous liquid phase mixture comprising a ruthenium carbonyl complex, an acyl compund selected from the group consisting of a carboxylic acid, a carboxylic acid anhydride and mixtures thereof, and a cosolvent which in combination with the acyl compound increases the yield of said ethylene glycol esters at a temperature of between about 50° C. and about 400° C. and a pressure of between about 500 psia. and about 12,500 psia. for a period of time sufficient to produce such esters as the predominant product.
Claim 3
Dependent Claim
18 words
The process as in claim 1 wherein the co-solvent is a sulfone, a phosphine oxide or a lactone.
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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) | 1989-06-02 | 1989-12-02 | 1990-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-06-02 | 1993-12-02 | 1994-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-06-02 | 1997-12-02 | 1998-06-03 | $7700.00 | Window Closed / Lapsed |