US4645806A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Use of certain polyphenylene oxides for the production of aromatic block polyether-poly(ester) carbonates by the interfacial process
Assignee: Bayer AG
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Filing: 1985-12-09
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Granted: 1987-02-24
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Expires: 2005-12-09
Abstract
Abstract This invention relates to the use of polyphenylene oxides corresponding to the following general formula: ##STR1## for the production of aromatic block polyether-poly(ester) carbonates by the interfacial process and also to the block polyether-poly(ester) carbonates obtainable by the process.
Inventors
- 👤 Dieter Freitag
- 👤 Ludwig Bottenbruch
- 👤 Klaus G. Wilms
- 👤 Peter Tacke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:55
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/64; C08G63/66
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
68 words
A process for the production of an aromatic block polyether-poly(ester) carbonate which comprises interfacial process for producing poly(ester) carbonates using a polyphenylene oxide corresponding to the following general formula: ##STR10## wherein R independently represents hydrogen or C 1 -C 4 alkyl; X represents ##STR11## wherein R is as defined above, --O--, --S-- or --SO 2 --; and m and n independently represent integers of from 1 to 200.
Claim 2
Dependent Claim
68 words
A process for the production of an aromatic block polyether-poly(ester) carbonate which comprises interfacial process for producing poly(ester) carbonates using a polyphenylene oxide corresponding to the following general formula: ##STR10## wherein R independently represents hydrogen or C 1 -C 4 alkyl; X represents ##STR11## wherein R is as defined above, --O--, --S-- or --SO 2 --; and m and n independently represent integers of from 1 to 200.
Claim 3
Dependent Claim
115 words
A process as claimed in claim 1 wherein there are used (1) one or more hydroxyl group-containing polyphenylene oxides; (2) one or more other diphenols; (3) one or more chain-terminators; (4) phosgene; optionally (5) up to 80 mole %, based on the total moles of carbonate and carboxylate groups, of one or more arylene dicarboxylic acid dichlorides; and, optionally, (6) from 0.01 to 1 mole %, based on moles of diphenols (1) and (2), of one or more branching agents; one or more polyphenylene oxides as defined in claim 1 being used as component (1) in quantities of from 5 to 95%, by weight, based on the total weight of the resulting block polyether-poly(ester) carbonate.
Claim 4
Dependent Claim
20 words
A process as claimed in claim 2, wherein from 10 to 95%, by weight, of polyphenylene oxide (I) is used.
Claim 5
Dependent Claim
20 words
A process as claimed in claim 3 wherein from 20 to 60%, by weight, of polyphenylene oxide (I) is used.
Claim 6
Dependent Claim
25 words
A process as claimed in claim 2, wherein polyphenylene oxide (I) having a number average molecular weight (Mn) of from 600 to 10,000 is used.
Claim 7
Dependent Claim
22 words
A process as claimed in claim 5 wherein polyphenylene oxide (I) having Mn as value of from 900 to 3000 is used.
Claim 8
Dependent Claim
25 words
A process as claimed in claim 5 wherein polyphenylene oxide (I), wherein m and n independently represent integers of from 3 to 20, is used.
Claim 9
Dependent Claim
19 words
A process as claimed in claim 2, wherein polyphenylene oxide (I), wherein R represents CH 3 , is used.
Claim 10
Dependent Claim
26 words
A process as claimed in claim 2, wherein the catalyst required for the interfacial method is added after the phosgene and the arylene dicarboxylic acid dichloride.
Claim 11
Dependent Claim
13 words
Aromatic block polyether-poly(ester) carbonates obtainable by a process as claimed in claim 1.
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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) | 1990-02-23 | 1990-08-25 | 1991-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-02-23 | 1994-08-25 | 1995-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-02-23 | 1998-08-25 | 1999-02-24 | $7700.00 | Window Closed / Lapsed |