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US4845167A
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Condensation polyimides containing 1,1,1-triaryl-2,2,2-trifluoroethane structures
Assignee: United States, NASA THE, Administrator of
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Filing: 1986-10-29
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Granted: 1989-07-04
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Expires: 2006-10-29
Abstract
Abstract A condensation polyimide containing a 1,1,1-triaryl-2,2,2-trifluoroethane structure, other related condensation polyimides and process for their preparation, which comprises polymerization of a cyclic dianhydride with a diamine.
Inventors
- 👤 William B. Alston
- 👤 Roy F. Gratz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 07:13
CPC Classifications
C; C08; C08G; C08G73/00; C08G73/06; C08G73/10; C08G73/1046; C08G73/1053; C08G73/1039
Claims Analysis
Total Claims: 29
Claim 1
Independent Claim
97 words
A condensation polyimide containing a 1,1,-bis[4-(1,2,-imide)aryl]-1-aryl-2,2,2-trifluoroethane structure comprising a polymerized mixture of a cyclic dianhydride and a diamine, either the dianhydride, the diamine or both containing 3F structures, the final polyimide excluding 6F structures, and in which the cyclic dianhydride is selected from formulae: ##STR22## wherein Ar is a polycyclic aromatic hydrocarbon and X is O, S, SO 2 , NH, PH, N0, P0, C═O, CH 2 or CH0, and Y is 0-O, 0-S, 0-SO 2 , 0-PH, 0 2 -P, 0 2 N or NO 2 , and the diamine is selected from the formulae: ##STR23##
Claim 2
Dependent Claim
97 words
A condensation polyimide containing a 1,1,-bis[4-(1,2,-imide)aryl]-1-aryl-2,2,2-trifluoroethane structure comprising a polymerized mixture of a cyclic dianhydride and a diamine, either the dianhydride, the diamine or both containing 3F structures, the final polyimide excluding 6F structures, and in which the cyclic dianhydride is selected from formulae: ##STR22## wherein Ar is a polycyclic aromatic hydrocarbon and X is O, S, SO 2 , NH, PH, N0, P0, C═O, CH 2 or CH0, and Y is 0-O, 0-S, 0-SO 2 , 0-PH, 0 2 -P, 0 2 N or NO 2 , and the diamine is selected from the formulae: ##STR23##
Claim 3
Dependent Claim
13 words
The condensation polyimide of claim 1 in which the cyclic dianhydride is ##STR24##
Claim 4
Dependent Claim
12 words
The condensation polyimide of claim 2 in which the diamine is ##STR25##
Claim 5
Dependent Claim
12 words
The condensation polyimide of claim 2 in which the diamine is ##STR26##
Claim 6
Dependent Claim
12 words
The condensation polyimide of claim 2 in which the diamine is ##STR27##
Claim 7
Dependent Claim
12 words
The condensation polyimide of claim 2 in which the diamine is ##STR28##
Claim 8
Dependent Claim
12 words
The condensation polyimide of claim 2 in which the diamine is ##STR29##
Claim 9
Dependent Claim
120 words
A condensation polyimide containing a 1,1,-bis[4-(1,2,-imide)aryl]-1-aryl-2,2,2-trifluoroethane structure comprising a polymerized mixture of a cyclic dianhydride and a diamine, either the dianhydride, the diamine or both containing 3F structures, the final polyimide excluding 6F structures, and in which the cyclic dianhydride is selected from the formulae: ##STR30## a mixture of ##STR31## a mixture of ##STR32## a mixture of ##STR33## wherein A is O, ##STR34## or C(CF 3 )0, and the diamine is selected from the formulae: ##STR35## wherein Ar is a polycyclic aromatic hydrocarbon and X is O, S, SO 2 , NH, PH, N0, P0, C═O, CH 2 or CH0, and and Y is 0-O, 0-S, 0-SO 2 , 0-PH, 0 2 -P, 0 2 N or NO 2 .
Claim 10
Dependent Claim
120 words
A condensation polyimide containing a 1,1,-bis[4-(1,2,-imide)aryl]-1-aryl-2,2,2-trifluoroethane structure comprising a polymerized mixture of a cyclic dianhydride and a diamine, either the dianhydride, the diamine or both containing 3F structures, the final polyimide excluding 6F structures, and in which the cyclic dianhydride is selected from the formulae: ##STR30## a mixture of ##STR31## a mixture of ##STR32## a mixture of ##STR33## wherein A is O, ##STR34## or C(CF 3 )0, and the diamine is selected from the formulae: ##STR35## wherein Ar is a polycyclic aromatic hydrocarbon and X is O, S, SO 2 , NH, PH, N0, P0, C═O, CH 2 or CH0, and and Y is 0-O, 0-S, 0-SO 2 , 0-PH, 0 2 -P, 0 2 N or NO 2 .
Claim 11
Dependent Claim
12 words
The condensation polyimide of claim 8 in which the diamine is ##STR36##
Claim 12
Dependent Claim
13 words
The condensation polyimide of claim 9 in which the cyclic dianhydride is ##STR37##
Claim 13
Dependent Claim
13 words
The condensation polyimide of claim 9 in which the cyclic dianhydride is ##STR38##
Claim 14
Dependent Claim
13 words
The condensation polyimide of claim 9 in which the cyclic dianhydride is ##STR39##
Claim 15
Dependent Claim
16 words
The condensation polyimide of claim 9 in which the cyclic anhydride is a mixture of ##STR40##
Claim 16
Dependent Claim
16 words
The condensation polyimide of claim 9, in which the cyclic dianhydride is a mixture of ##STR41##
Claim 17
Dependent Claim
16 words
The condensation polyimide of claim 9 in which the cyclic dianhydride is a mixture of ##STR42##
Claim 18
Dependent Claim
50 words
A condensation polyimide containing a 1,1,-bis[4-(1,2,-imide)aryl]-1-aryl-2,2,2-trifluoroethane structure comprising a polymerized mixture of a cyclic dianhydride and a diamine, either the dianhydride, the diamine or both containing 3F structures, the final polyimide excluding 6F structures, and in which the cyclic dianhydride is ##STR43## and the diamine is a mixture of ##STR44##
Claim 19
Dependent Claim
50 words
A condensation polyimide containing a 1,1,-bis[4-(1,2,-imide)aryl]-1-aryl-2,2,2-trifluoroethane structure comprising a polymerized mixture of a cyclic dianhydride and a diamine, either the dianhydride, the diamine or both containing 3F structures, the final polyimide excluding 6F structures, and in which the cyclic dianhydride is ##STR43## and the diamine is a mixture of ##STR44##
Claim 20
Dependent Claim
50 words
A condensation polyimide containing a 1,1,-bis[4-(1,2,-imide)aryl]-1-aryl-2,2,2-trifluoroethane structure comprising a polymerized mixture of a cyclic dianhydride and a diamine, either the dianhydride, the diamine or both containing 3F structures, the final polyimide excluding 6F structures, and in which the cyclic dianhydride is ##STR45## and the diamine is a mixture of ##STR46##
Claim 21
Dependent Claim
50 words
A condensation polyimide containing a 1,1,-bis[4-(1,2,-imide)aryl]-1-aryl-2,2,2-trifluoroethane structure comprising a polymerized mixture of a cyclic dianhydride and a diamine, either the dianhydride, the diamine or both containing 3F structures, the final polyimide excluding 6F structures, and in which the cyclic dianhydride is ##STR45## and the diamine is a mixture of ##STR46##
Claim 22
Dependent Claim
9 words
The condensation polyimide of claim 8 which comprises ##STR47##
Claim 23
Dependent Claim
9 words
The condensation polyimide of claim 8 which comprises ##STR48##
Claim 24
Dependent Claim
9 words
The condensation polyimide of claim 8 which comprises ##STR49##
Claim 25
Dependent Claim
9 words
The condensation polyimide of claim 8 which comprises ##STR50##
Claim 26
Dependent Claim
18 words
The condensation polyimide of claim 8 in which the cyclic dianhydride is (III) and the diamine is ##STR51##
Claim 27
Dependent Claim
18 words
The condensation polyimide of claim 8 in which the cyclic dianhydride is (IV) and the diamine is ##STR52##
Claim 28
Dependent Claim
18 words
The condensation polyimide of claim 8 in which the cyclic dianhydride is (V) and the diamine is ##STR53##
Claim 29
Dependent Claim
18 words
The condensation polyimide of claim 8 in which the cyclic dianhydride is (VI) and the diamine is ##STR54##
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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) | 1992-07-03 | 1993-01-02 | 1993-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-07-03 | 1997-01-02 | 1997-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-07-03 | 2001-01-02 | 2001-07-04 | $7700.00 | Window Closed / Lapsed |