US4552704A
Expired / Lapsed
US
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Process for the production of aromatic carbonates
Assignee: General Electric Co
•
Filing: 1983-12-27
•
Granted: 1985-11-12
•
Expires: 2003-12-27
Abstract
Abstract An improved process for the preparation of aromatic carbonates selected from aliphatic aromatic carbonates, diaromatic carbonates, and mixtures thereof comprising reacting at least one phenolic compound with at least one dialiphatic carbonate or at least one aliphatic aromatic carbonate in the presence of a catalytic amount of at least one transesterification catalyst represented by the general formula ##STR1## wherein: X is selected from Sn and Ti; and R is selected from monovalent hydrocarbon radicals and monovalent hydrocarbonoxy radicals.
Inventors
- 👤 Victor Mark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 03:57
CPC Classifications
C; C07; C07C; C07C68/00; C07C68/06; C07C69/00; C07C69/96
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
118 words
An improved process for preparing aromatic carbonates selected from aliphatic aromatic carbonates represented by the formula ##STR11## diaromatic carbonates represented by the formula ##STR12## wherein Ar is independently selected from monovalent aromatic radicals and R 1 is selected from monovalent aliphatic radicals, and mixtures thereof which comprises reacting a phenolic compound represented by the formula Ar--OH with a dialiphatic carbonate represented by the formula ##STR13## or an aliphatic aromatic carbonate represented by the formula ##STR14## in the presence of a catalytic amount of a transesterification catalyst, the improvement comprising utilizing as the catalyst at least one compound represented by the formula ##STR15## wherein: X is selected from Sn and Ti; and R is selected from monovalent hydrocarbon radicals.
Claim 2
Dependent Claim
118 words
An improved process for preparing aromatic carbonates selected from aliphatic aromatic carbonates represented by the formula ##STR11## diaromatic carbonates represented by the formula ##STR12## wherein Ar is independently selected from monovalent aromatic radicals and R 1 is selected from monovalent aliphatic radicals, and mixtures thereof which comprises reacting a phenolic compound represented by the formula Ar--OH with a dialiphatic carbonate represented by the formula ##STR13## or an aliphatic aromatic carbonate represented by the formula ##STR14## in the presence of a catalytic amount of a transesterification catalyst, the improvement comprising utilizing as the catalyst at least one compound represented by the formula ##STR15## wherein: X is selected from Sn and Ti; and R is selected from monovalent hydrocarbon radicals.
Claim 3
Dependent Claim
13 words
The process of claim 1 wherein R is selected from monovalent hydrocarbon radicals.
Claim 4
Dependent Claim
17 words
The process of claim 2 wherein said monovalent hydrocarbon radicals are selected from aliphatic monovalent hydrocarbon radicals.
Claim 5
Dependent Claim
19 words
The process of claim 3 wherein said monovalent aliphatic hydrocarbon radicals are selected from alkyl radicals and cycloalkyl radicals.
Claim 6
Dependent Claim
17 words
The process of claim 2 wherein said monovalent hydrocarbon radicals are selected from monovalent aromatic hydrocarbon radicals.
Claim 7
Dependent Claim
21 words
The process of claim 5 wherein said monovalent aromatic hydrocarbon radicals are selected from aryl radicals, aralkyl radicals, and alkaryl radicals.
Claim 8
Dependent Claim
13 words
The process of claim 1 wherein R is selected from monovalent hydrocarbonoxy radicals.
Claim 9
Dependent Claim
18 words
The process of claim 7 wherein said monovalent hydrocarbonoxy radicals are selected from alkoxy radicals and aryloxy radicals.
Claim 10
Dependent Claim
33 words
The process of claim 1 wherein said catalytic amount is in the range of from about 0.01 to about 25 weight percent, based on the amounts of aliphatic aromatic or dialiphatic carbonates present.
Claim 11
Dependent Claim
9 words
The process of claim 9 wherein X is Sn.
Claim 12
Dependent Claim
11 words
The process of claim 10 wherein R is an alkyl radical.
Claim 13
Dependent Claim
11 words
The process of claim 11 wherein said alkyl radical is butyl.
Claim 14
Dependent Claim
9 words
The process of claim 1 wherein X is Ti.
Claim 15
Dependent Claim
13 words
The process of claim 13 wherein R is selected from monovalent hydrocarbon radicals.
Claim 16
Dependent Claim
17 words
The process of claim 14 wherein said monovalent hydrocarbon radicals are selected from aliphatic monovalent hydrocarbon radicals.
Claim 17
Dependent Claim
19 words
The process of claim 15 wherein said monovalent aliphatic hydrocarbon radicals are selected from alkyl radicals and cycloalkyl radicals.
Claim 18
Dependent Claim
17 words
The process of claim 14 wherein said monovalent hydrocarbon radicals are selected from monovalent aromatic hydrocarbon radicals.
Claim 19
Dependent Claim
21 words
The process of claim 17 wherein said monovalent aromatic hydrocarbon radicals are selected from aryl radicals, aralkyl radicals, and alkaryl radicals.
References Cited (Backward Citations)
US4281101A
Cited
US4263446A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-11-11 | 1989-05-13 | 1989-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-11-11 | 1993-05-13 | 1993-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-11-11 | 1997-05-13 | 1997-11-12 | $7700.00 | Window Closed / Lapsed |