Patent US4413460A successfully refreshed from Google Patents.
Patent US4096168A successfully refreshed from Google Patents.
US4096168A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aromatic carbonates
Assignee: General Electric Co
•
Filing: 1976-10-12
•
Granted: 1978-06-20
•
Expires: 1996-10-12
Abstract
Abstract An aromatic carbonate process comprising contacting a phenol, carbon monoxide, a base, a Group VIIIB element selected from ruthenium, rhodium, palladium, osmium, iridium or platinum having an oxidation state of plus one. 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
- 👤 John E. Hallgren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 10:38
CPC Classifications
B; B01; B01J; B01J31/00; B01J31/16; B01J31/20; B01J31/18; B01J31/1805; C; C07; C07C; C07C68/00; C08; C08G; C08G64/00; C08G64/20; C08G64/36; B01J2531/00; B01J2531/80; B01J2531/82; B01J2531/821; B01J2531/822; B01J2531/824; B01J2531/825; B01J2531/827; B01J2531/828
Claims Analysis
Total Claims: 29
Claim 1
Independent Claim
50 words
An improved aromatic carbonate process wherein an aromatic carbonate is formed in the substantial absence of an aromatic salicylate which comprises contacting a phenol with carbon monoxide, a base, and a Group VIIIB element selected from ruthenium, rhodium, palladium, iridium, osmium or platinum having an oxidation state of plus one.
Claim 2
Dependent Claim
50 words
An improved aromatic carbonate process wherein an aromatic carbonate is formed in the substantial absence of an aromatic salicylate which comprises contacting a phenol with carbon monoxide, a base, and a Group VIIIB element selected from ruthenium, rhodium, palladium, iridium, osmium or platinum having an oxidation state of plus one.
Claim 3
Dependent Claim
13 words
The claim 1 process, wherein said element is present in an ionic form.
Claim 4
Dependent Claim
43 words
The claim 1 process, further comprising contacting a Group VIIIB element selected from ruthenium, rhodium, palladium, osmium, iridium, or platinum having an oxidation state of at least ×2 with carbon monoxide and a phenol, prior to contacting the resulting admixture with a base.
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
14 words
The claim 1 process, wherein said element is associated with an inorganic halide compound.
Claim 9
Dependent Claim
28 words
The claim 1 process, wherein methylene chloride is employed as a solvent, the base is diisopropylmonoethylamine, the phenol is a phenol, and Group VIIIB element is polypalladium(I)monocarbonyl chloride.
Claim 10
Dependent Claim
28 words
The claim 1 process, wherein methylene chloride is employed as a solvent, the base is diisopropylmonoethylamine, the phenol is bis(4-hydroxyphenyl)propane-2,2 and the Group VIIIB element is polypalladium(I)monocarbonyl chloride.
Claim 11
Dependent Claim
27 words
The claim 1 process, wherein methylene chloride is employed as a solvent, the base is 2,2,6,6,N-pentamethylpiperidine the phenol is bis(4-hydroxyphenyl)propane-2,2, the Group VIIIB element is polypalladium(I)monocarbonyl bromide.
Claim 12
Dependent Claim
32 words
The claim 1 process, wherein methylene chloride is employed as a solvent, the base is 2,2,6,6,N-pentamethylpiperidine, the phenol is a phenol, the Group VIIIB element is platinum in the form of bis(tetrapropylammonium)dicarbonyltetrachloroplatinite(I).
Claim 13
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 14
Dependent Claim
59 words
An improved aromatic polycarbonate process wherein an aromatic polycarbonate is formed in the substantial absence of an aromatic salicylate 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 of plus one.
Claim 15
Dependent Claim
59 words
An improved aromatic polycarbonate process wherein an aromatic polycarbonate is formed in the substantial absence of an aromatic salicylate 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 of plus one.
Claim 16
Dependent Claim
92 words
An improved aromatic polycarbonate process wherein an aromatic polycarbonate is formed in the substantial absence of an aromatic salicylate which comprises contacting an aromatic bisphenol of the formula: ##STR10## 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 of plus one.
Claim 17
Dependent Claim
92 words
An improved aromatic polycarbonate process wherein an aromatic polycarbonate is formed in the substantial absence of an aromatic salicylate which comprises contacting an aromatic bisphenol of the formula: ##STR10## 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 of plus one.
Claim 18
Dependent Claim
24 words
The claim 14 process, wherein R 1 and R 2 are methyl and at least one of R 3 and R 4 is hydrogen.
Claim 19
Dependent Claim
11 words
The claim 15 process, wherein the base is a tertiary amine.
Claim 20
Dependent Claim
13 words
The claim 16 process, carried out in the presence of an inert solvent.
Claim 21
Dependent Claim
61 words
An improved aromatic polycarbonate process wherein a polycarbonate is formed in substantial absence of an aromatic salicylate which comprises contacting an aromatic bisphenol of the formula: ##STR11## 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 of plus one.
Claim 22
Dependent Claim
61 words
An improved aromatic polycarbonate process wherein a polycarbonate is formed in substantial absence of an aromatic salicylate which comprises contacting an aromatic bisphenol of the formula: ##STR11## 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 of plus one.
Claim 23
Dependent Claim
85 words
An improved aromatic monocarbonate process wherein an aromatic monocarbonate is formed in substantial absence of an aromatic salicylate which comprises contacting an aromatic phenol of the formula: R.sub.a (OH).sub.x, where 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 of plus one.
Claim 24
Dependent Claim
85 words
An improved aromatic monocarbonate process wherein an aromatic monocarbonate is formed in substantial absence of an aromatic salicylate which comprises contacting an aromatic phenol of the formula: R.sub.a (OH).sub.x, where 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 of plus one.
Claim 25
Dependent Claim
18 words
The claim 19 process, wherein R a is selected from carbo- or heteromonocyclic, polycyclic or fused polycyclic radicals.
Claim 26
Dependent Claim
11 words
The claim 20 process, wherein the base is a tertiary amine.
Claim 27
Dependent Claim
13 words
The claim 21 process, carried out in the presence of an inert solvent.
Claim 28
Dependent Claim
57 words
An improved aromatic monocarbonate process wherein an aromatic monocarbonate is formed in substantial absence of an aromatic salicylate which comprises contacting a phenol of the formula: ##STR12## 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 of plus one.
Claim 29
Dependent Claim
57 words
An improved aromatic monocarbonate process wherein an aromatic monocarbonate is formed in substantial absence of an aromatic salicylate which comprises contacting a phenol of the formula: ##STR12## 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 of plus one.
References Cited (Backward Citations)
US3114762A
Cited
US3846468A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 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 |