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US4281106A
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Heat-resistant, rigid polymers from difunctional 9,10-dihydro-9,10-ethanoanthracenes
Assignee: EIDP Inc
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Filing: 1979-07-12
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Granted: 1981-07-28
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Expires: 1999-07-12
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
2026-10-24 11:42
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: 12
Claim 1
Independent Claim
104 words
A process comprising forming a shaped article of a polymer containing repeating units of the structure ##STR56## wherein --R-- is --CR'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 ##STR57## and n is at least 10; heating the shaped article above about 250° C. to convert the polymer to a polymer having repeating units of the structure ##STR58##
Claim 2
Dependent Claim
104 words
A process comprising forming a shaped article of a polymer containing repeating units of the structure ##STR56## wherein --R-- is --CR'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 ##STR57## and n is at least 10; heating the shaped article above about 250° C. to convert the polymer to a polymer having repeating units of the structure ##STR58##
Claim 3
Dependent Claim
9 words
The process of claim 1 wherein --X-- is ##STR59##
Claim 4
Dependent Claim
11 words
The process of claim 2 wherein --R 2 -- is alkylene.
Claim 5
Dependent Claim
11 words
The process of claim 2 wherein --R 2 -- is arylene.
Claim 6
Dependent Claim
11 words
The process of claim 2 wherein --R 2 -- is ##STR60##
Claim 7
Dependent Claim
21 words
The process of claim 5 wherein --R 2 -- is --OCH 2 CH 2 O-- or --CH 2 -- m .
Claim 8
Dependent Claim
16 words
The process of claim 2 wherein --R 2 -- is a mixture of arylene and alkylene.
Claim 9
Dependent Claim
21 words
The process of claim 7 wherein --R 2 -- is a mixture of any one or more of ##STR61## and alkylene.
Claim 10
Dependent Claim
15 words
The process of claim 1 wherein R is --CH 2 CH 2 -- or ##STR62##
Claim 11
Dependent Claim
64 words
A polymer, in the form of a shaped article, consisting essentially of repeating units of the structure ##STR63## wherein --R 2 -- is 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 ##STR64##
Claim 12
Dependent Claim
64 words
A polymer, in the form of a shaped article, consisting essentially of repeating units of the structure ##STR63## wherein --R 2 -- is 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 ##STR64##
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) | 1984-07-27 | 1985-01-26 | 1985-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-07-27 | 1989-01-26 | 1989-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-07-27 | 1993-01-26 | 1993-07-28 | $7700.00 | Window Closed / Lapsed |