US4554110A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the preparation of aromatic carbonates
Assignee: General Electric Co
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Filing: 1983-12-27
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Granted: 1985-11-19
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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 a phenolic compound with a dialiphatic carbonate or an aliphatic aromatic carbonate in the presence of a catalytic amount of at least one catalyst selected from polymeric tin compounds containing recurring structural units represented by the general formula ##STR1## wherein: R is selected from monovalent hydrocarbon radicals; and R 1 is selected from monovalent hydrocarbon radicals.
Inventors
- 👤 Victor Mark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:42
CPC Classifications
C; C07; C07C; C07C68/00; C07C68/06; C07C69/00; C07C69/96
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
152 words
An improved process for the preparation of an aromatic carbonate selected from aliphatic aromatic carbonates represented by the formula ##STR11## diaromatic carbonates represented by the formula ##STR12## and mixtures thereof which comprises reacting a phenolic compound with a dialiphatic carbonate represented by the formula ##STR13## or an aliphatic aromatic carbonate represented by the formula ##STR14## wherein R 2 is independently selected from monovalent aliphatic radicals having from 1 to about 12 carbon atoms and Ar is independently selected from aromatic radicals having from 6 to 12 ring carbon atoms, in the presence of a catalytic amount of a catalyst, the improvement comprising utilizing as the catalyst a polymeric tin compound containing recurring structural units represented by the formula ##STR15## wherein: R is selected from monovalent hydrocarbon radicals having from 1 to about 18 carbon atoms; and R 1 is selected from monovalent hydrocarbon radicals having from 1 to about 18 carbon atoms.
Claim 2
Dependent Claim
152 words
An improved process for the preparation of an aromatic carbonate selected from aliphatic aromatic carbonates represented by the formula ##STR11## diaromatic carbonates represented by the formula ##STR12## and mixtures thereof which comprises reacting a phenolic compound with a dialiphatic carbonate represented by the formula ##STR13## or an aliphatic aromatic carbonate represented by the formula ##STR14## wherein R 2 is independently selected from monovalent aliphatic radicals having from 1 to about 12 carbon atoms and Ar is independently selected from aromatic radicals having from 6 to 12 ring carbon atoms, in the presence of a catalytic amount of a catalyst, the improvement comprising utilizing as the catalyst a polymeric tin compound containing recurring structural units represented by the formula ##STR15## wherein: R is selected from monovalent hydrocarbon radicals having from 1 to about 18 carbon atoms; and R 1 is selected from monovalent hydrocarbon radicals having from 1 to about 18 carbon atoms.
Claim 3
Dependent Claim
42 words
The process of claim 1 wherein said monovalent hydrocarbon radicals R and R 1 are selected from monovalent aliphatic hydrocarbon radicals having from 1 to about 18 carbon atoms and monovalent aromatic hydrocarbon radicals having from 6 to 12 ring carbon atoms.
Claim 4
Dependent Claim
36 words
The process of claim 2 wherein said monovalent aliphatic hydrocarbon radicals are selected from alkyl radicals having from 1 to about 18 carbon atoms and cycloalkyl radicals having from 4 to about 7 ring carbon atoms.
Claim 5
Dependent Claim
45 words
The process of claim 2 wherein said monovalent aromatic hydrocarbon radicals are selected from aryl radicals having from 6 to 12 ring carbon atoms, aralkyl radicals having from 7 to about 18 carbon atoms, and alkaryl radicals having from 7 to about 18 carbon atoms.
Claim 6
Dependent Claim
15 words
The process of claim 2 wherein R and R 1 are selected from alkyl radicals.
Claim 7
Dependent Claim
20 words
The process of claim 2 wherein R 1 is selected from alkyl radicals and R is selected from aryl radicals.
Claim 8
Dependent Claim
11 words
The process of claim 6 wherein said aryl radical is phenyl.
Claim 9
Dependent Claim
36 words
The process of claim 2 wherein said catalytic amount is in the range of from about 0.01 to about 20 weight percent, based on the amounts of aliphatic aromatic carbonate reactant or dialiphatic carbonate reactant utilized.
Claim 10
Dependent Claim
21 words
The process of claim 8 wherein said amount is in the range of from about 0.1 to about 15 weight percent.
Claim 11
Dependent Claim
11 words
The process of claim 9 wherein said catalyst is poly[oxy(dibutyl stannylene)].
Claim 12
Dependent Claim
10 words
The process of claim 9 wherein said catalyst is poly[oxy(dioctylstannylene)].
Claim 13
Dependent Claim
12 words
The process of claim 9 wherein said catalyst is poly[oxy(butyl phenyl stannylene)].
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) | 1988-11-18 | 1989-05-20 | 1989-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-11-18 | 1993-05-20 | 1993-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-11-18 | 1997-05-20 | 1997-11-19 | $7700.00 | Window Closed / Lapsed |