US4371690A
Expired / Lapsed
US
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Heat-resistant rigid polymers from difunctional 9,10-dihydro-9,10-ethanoanthracenes
Assignee: EIDP Inc
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Filing: 1981-02-09
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Granted: 1983-02-01
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Expires: 2001-02-09
Abstract
Abstract High molecular weight processible polymers derived from 2,6- and 2,7-diacids, diols and diamines of 9,10-dihydro-9,10-ethanoanthracenes and various complementary comonomers are prepared. These are converted into rigid, thermally-stable anthraceno polyesters and polyamides by thermal removal of the 9,10-ethano bridge.
Inventors
- 👤 Burton C. Anderson
- 👤 August H. Frazer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:11
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/02; C08G63/12; C08G63/16; C08G63/18; C08G63/19; C08G63/66; C08G63/668; C08G63/672; C08G69/00; C08G69/02; C08G69/26; C08G69/265
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
117 words
A tractable polymer containing repeating units of the structure ##STR62## wherein --R-- is --CR' 2 CHR'-- and --R' is --H or --CH 3 ; and --R 2 -- is, independently, an alkylene group containing 2 to 14 carbon atoms, an arylene group containing 6 to 14 carbon atoms, an alkyl-substituted or chloro-substituted arylene group containing 6 to 14 carbon atoms, a cycloalkylene group containing 4 to 14 carbon atoms, or ##STR63## where ##STR64## where m is 1 to 10, ##STR65## where o is 1 to 8, ##STR66## where R 3 is an alkyl group containing 1 to 6 carbon atoms or an aryl group containing 6 to 12 carbon atoms, ##STR67## and n is at least 10.
Claim 2
Dependent Claim
117 words
A tractable polymer containing repeating units of the structure ##STR62## wherein --R-- is --CR' 2 CHR'-- and --R' is --H or --CH 3 ; and --R 2 -- is, independently, an alkylene group containing 2 to 14 carbon atoms, an arylene group containing 6 to 14 carbon atoms, an alkyl-substituted or chloro-substituted arylene group containing 6 to 14 carbon atoms, a cycloalkylene group containing 4 to 14 carbon atoms, or ##STR63## where ##STR64## where m is 1 to 10, ##STR65## where o is 1 to 8, ##STR66## where R 3 is an alkyl group containing 1 to 6 carbon atoms or an aryl group containing 6 to 12 carbon atoms, ##STR67## and n is at least 10.
Claim 3
Dependent Claim
9 words
The polymer of claim 1 wherein --X-- is ##STR68##
Claim 4
Dependent Claim
11 words
The polymer of claim 2 wherein --R 2 -- is alkylene.
Claim 5
Dependent Claim
11 words
The polymer of claim 2 wherein --R 2 -- is arylene.
Claim 6
Dependent Claim
11 words
The polymer of claim 2 wherein --R 2 -- is ##STR69##
Claim 7
Dependent Claim
18 words
The polymer of claim 5 wherein --Q-- is --CH 2 ) m or --OCH 2 CH 2 O--.
Claim 8
Dependent Claim
16 words
The polymer of claim 2 wherein --R 2 -- is a mixture of arylene and alkylene.
Claim 9
Dependent Claim
21 words
The polymer of claim 7 wherein --R 2 -- is a mixture of any one or more of ##STR70## and alkylene.
Claim 10
Dependent Claim
9 words
The polymer of claim 1 wherein --X-- is ##STR71##
Claim 11
Dependent Claim
11 words
The polymer of claim 9 wherein --R 2 -- is alkylene.
Claim 12
Dependent Claim
11 words
The polymer of claim 10 wherein --R 2 -- is arylene.
Claim 13
Dependent Claim
11 words
The polymer of claim 9 wherein --R 2 -- is ##STR72##
Claim 14
Dependent Claim
18 words
The polymer of claim 12 wherein --Q-- is --CH 2 ) m or --OCH 2 CH 2 O--.
Claim 15
Dependent Claim
16 words
The polymer of claim 9 wherein --R 2 -- is a mixture of arylene and alkylene.
Claim 16
Dependent Claim
21 words
The polymer of claim 14 wherein --R 2 -- is a mixture of any one or more of ##STR73## and alkylene.
Claim 17
Dependent Claim
9 words
The polymer of claim 1 wherein --R-- is ##STR74##
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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) | 1986-01-31 | 1986-08-02 | 1987-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-01-31 | 1990-08-02 | 1991-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-01-31 | 1994-08-02 | 1995-02-01 | $7700.00 | Window Closed / Lapsed |