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US4096169A
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Aromatic carbonates
Assignee: General Electric Co
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Filing: 1976-10-12
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Granted: 1978-06-20
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Expires: 1996-10-12
Abstract
Abstract An aromatic carbonate process comprising contacting a phenol, carbon monoxide in the presence of a base, Group VIIIB element selected from ruthenium, rhodium, palladium, osmium, iridium or platinum having an oxidation state greater than zero. The resulting aromatic mono- and polycarbonates are useful in the preparation of polycarbonates or as polycarbonates, per se, respectively, which can be molded or formed into films, sheets, fibers, laminates or reinforced plastics by conventional techniques.
Inventors
- 👤 Alan J. Chalk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 10:32
CPC Classifications
C; C08; C08G; C08G64/00; C08G64/20; C08G64/36; B; B01; B01J; B01J31/00; B01J31/16; B01J31/18; B01J31/1805; B01J31/20; B01J31/24; C07; C07C; C07C68/00; C07C68/01; B01J2531/00; B01J2531/80; B01J2531/82; B01J2531/821; B01J2531/822; B01J2531/824; B01J2531/827; B01J2531/828
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
35 words
An aromatic carbonate process which comprises contacting a phenol with carbon monoxide, a base, and a Group VIIIB element selcted from ruthenium, rhodium, palladium, osmium, iridium or platinum having an oxidation state greater than zero.
Claim 2
Dependent Claim
35 words
An aromatic carbonate process which comprises contacting a phenol with carbon monoxide, a base, and a Group VIIIB element selcted from ruthenium, rhodium, palladium, osmium, iridium or platinum having an oxidation state greater than zero.
Claim 3
Dependent Claim
13 words
The claim 1 process, wherein said element is present in an ionic form.
Claim 4
Dependent Claim
13 words
The claim 1 process, wherein said element oxidation state is at least +2.
Claim 5
Dependent Claim
12 words
The claim 1 process, wherein said base is a sterically hindered amine.
Claim 6
Dependent Claim
13 words
The claim 1 process, wherein said element is associated with a carbonyl group.
Claim 7
Dependent Claim
12 words
The claim 1 process, wherein said element is associated with a halide.
Claim 8
Dependent Claim
25 words
The claim 1 process, wherein said element is coordinated with a ligand selected from an arsine, a stibine, a phosphine, a nitrile or a halide.
Claim 9
Dependent Claim
14 words
The claim 1 process, wherein said element is associated with an inorganic halide compound.
Claim 10
Dependent Claim
32 words
The claim 1 process, wherein methylene chloride is employed as a solvent, the base is diisopropylmonoethylamine, the phenol is 4-methylphenol, the Group VIIIB element is palladium in the form of palladium(II) dichloride.
Claim 11
Dependent Claim
39 words
The claim 1 process in which diphenyl carbonate is prepared in a methylene chloride solution in which the base is diisopropylmonoethylamine, the phenol is phenol, and the Group VIIIB element is palladium in the form of bis(benzonitrile) palldium(II) dichloride.
Claim 12
Dependent Claim
64 words
The claim 1 process, further comprising, after the preparation of the aromatic carbonate, separating at least a portion of any resulting Group VIIIB element or compound from said carbonate, oxidizing at least a portion of said resulting Group VIIIB element or compound to an oxidation state greater than zero, and recycling at least a portion of said oxidized element in said aromatic carbonate process.
Claim 13
Dependent Claim
44 words
An aromatic polycarbonate process which comprises contacting an aromatic polyphenol with carbon monoxide in the presence of a base and a Group VIIIB metal selected from the class consisting of ruthenium, rhodium, palladium, osmium, iridium and platinum having an oxidation state greater than zero.
Claim 14
Dependent Claim
44 words
An aromatic polycarbonate process which comprises contacting an aromatic polyphenol with carbon monoxide in the presence of a base and a Group VIIIB metal selected from the class consisting of ruthenium, rhodium, palladium, osmium, iridium and platinum having an oxidation state greater than zero.
Claim 15
Dependent Claim
77 words
An aromatic polycarbonate process which comprises contacting an aromatic bisphenol of the formula: ##STR12## where independently each R 1 and R 2 is hydrogen, C 1-4 alkyl or phenyl and independently each R 3 and R 4 is hydrogen or C 1-4 alkyl, with carbon monoxide in the presence of a base and a Group VIIIB metal selected from the class consisting of ruthenium, rhodium, palladium, osmium, iridium and platinum having an oxidation state greater than zero.
Claim 16
Dependent Claim
77 words
An aromatic polycarbonate process which comprises contacting an aromatic bisphenol of the formula: ##STR12## where independently each R 1 and R 2 is hydrogen, C 1-4 alkyl or phenyl and independently each R 3 and R 4 is hydrogen or C 1-4 alkyl, with carbon monoxide in the presence of a base and a Group VIIIB metal selected from the class consisting of ruthenium, rhodium, palladium, osmium, iridium and platinum having an oxidation state greater than zero.
Claim 17
Dependent Claim
24 words
The claim 13 process, wherein R 1 and R 2 are methyl and at least one of R 3 and R 4 is hydrogen.
Claim 18
Dependent Claim
11 words
The claim 14 process, wherein the base is a tertiary amine.
Claim 19
Dependent Claim
13 words
The claim 15 process, carried out in the presence of an inert solvent.
Claim 20
Dependent Claim
48 words
An aromatic polycarbonate process which comprises contacting an aromatic bisphenol of the formula: ##STR13## with carbon monoxide in the presence of a base and a Group VIIIB metal selected from the class consisting of ruthenium, rhodium, palladium, osmium, iridium and platinum having an oxidation state greater than zero.
Claim 21
Dependent Claim
48 words
An aromatic polycarbonate process which comprises contacting an aromatic bisphenol of the formula: ##STR13## with carbon monoxide in the presence of a base and a Group VIIIB metal selected from the class consisting of ruthenium, rhodium, palladium, osmium, iridium and platinum having an oxidation state greater than zero.
Claim 22
Dependent Claim
71 words
An aromatic monocarbonate process which comprises contacting an aromatic phenol of the formula: R.sub.a --OH).sub.x wherein R a represents an aromatic radical wherein the --OH radical is attached directly to an aromatic ring carbon atom and x is the number 1, with carbon monoxide, a base, and a Group VIIIB element selected from the class consisting of ruthenium, rhodium, palladium, osmium, iridium and platinum having an oxidation state greater than zero.
Claim 23
Dependent Claim
71 words
An aromatic monocarbonate process which comprises contacting an aromatic phenol of the formula: R.sub.a --OH).sub.x wherein R a represents an aromatic radical wherein the --OH radical is attached directly to an aromatic ring carbon atom and x is the number 1, with carbon monoxide, a base, and a Group VIIIB element selected from the class consisting of ruthenium, rhodium, palladium, osmium, iridium and platinum having an oxidation state greater than zero.
Claim 24
Dependent Claim
18 words
The claim 18 process, wherein R a is selected from carbo- or heteromonocyclic, polycyclic or fused polycyclic radicals.
Claim 25
Dependent Claim
11 words
The claim 19 process, wherein the base is a tertiary amine.
Claim 26
Dependent Claim
13 words
The claim 20 process, carried out in the presence of an inert solvent.
Claim 27
Dependent Claim
43 words
An aromatic monocarbonate process which comprises contacting a phenol of the formula: ##STR14## with carbon monoxide, a base, and a Group VIIIB element selected from the class consisting of ruthenium, rhodium, palladium, osmium, iridium and platinum having an oxidation state greater than zero.
Claim 28
Dependent Claim
43 words
An aromatic monocarbonate process which comprises contacting a phenol of the formula: ##STR14## with carbon monoxide, a base, and a Group VIIIB element selected from the class consisting of ruthenium, rhodium, palladium, osmium, iridium and platinum having an oxidation state greater than zero.
References Cited (Backward Citations)
US3114762A
Cited
US3846468A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1981-06-19 | 1981-12-19 | 1982-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-06-19 | 1985-12-19 | 1986-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-06-19 | 1989-12-19 | 1990-06-20 | $7700.00 | Window Closed / Lapsed |