US4816555A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wholly aromatic mesomorphic polyester amides and preparation thereof
Assignee: BASF SE
•
Filing: 1986-12-04
•
Granted: 1989-03-28
•
Expires: 2006-12-04
Abstract
Abstract Wholly aromatic mesomorphic polyester amides which form a liquid-crystalline fiber-forming melt below 320° C., composed of (a) from 3 to 30 mol % of repeat units of the formula I ##STR1## (b) from 3 to 30 mol % of repeat units of the formula II and/or III ##STR2## (c) from 2 to 25 mol % of one or more of the repeat units of the formula IV, V or VI, ##STR3## (d) a molar amount corresponding to the total amount of components (a), (b) and (c) excluding the repeat unit of the formula III, of the repeat units of the formula VII ##STR4## which, if desired, can in part be replaced by repeat units of the formula VIII ##STR5## (e) if desired from 5 to 25 mol % of repeat units of the formula IX ##STR6## (f) repeat units of the formula X ##STR7## the molar proportions of components (a), (b), (c), (d), (e) and (f) in each case adding up to 100 mol %, and preparation thereof.
Inventors
- 👤 Bernd Hisgen
- 👤 Hans-Jakob Kock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 18:43
CPC Classifications
C; C08; C08G; C08G69/00; C08G69/44; C09; C09K; C09K19/00; C09K19/04; C09K19/38; C09K19/3804; C09K19/3809
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
166 words
A wholly aromatic mesomorphic polyester amide which forms a liquid-crystalline fiber-forming melt below 320° C., composed of (a) from 3 to 30 mol % of repeat units of the formula I ##STR22## (b) from 3 to 30 mol % of repeat units of the formula II and/or III ##STR23## (c) from 2 to 25 mol % of one or more of the repeat units of the formula IV, V or VI, ##STR24## (d) a molar amount corresponding to the total amount of components a, b and c except the repeat unit of the formula III, of the repeat units of the formula VII ##STR25## which, if desired, can in part be replaced by repeat units of the formula VIII ##STR26## (e) if desired from 5 to 25 mol % of repeat units of the formula IX ##STR27## (f) repeat units of the formula X ##STR28## the molar proportions of components (a), (b), (c), (d), (e) and (f) in each case adding up to 100 mol %.
Claim 2
Dependent Claim
166 words
A wholly aromatic mesomorphic polyester amide which forms a liquid-crystalline fiber-forming melt below 320° C., composed of (a) from 3 to 30 mol % of repeat units of the formula I ##STR22## (b) from 3 to 30 mol % of repeat units of the formula II and/or III ##STR23## (c) from 2 to 25 mol % of one or more of the repeat units of the formula IV, V or VI, ##STR24## (d) a molar amount corresponding to the total amount of components a, b and c except the repeat unit of the formula III, of the repeat units of the formula VII ##STR25## which, if desired, can in part be replaced by repeat units of the formula VIII ##STR26## (e) if desired from 5 to 25 mol % of repeat units of the formula IX ##STR27## (f) repeat units of the formula X ##STR28## the molar proportions of components (a), (b), (c), (d), (e) and (f) in each case adding up to 100 mol %.
Claim 3
Dependent Claim
121 words
A wholly aromatic mesomorphic polyester amide as claimed in claim 1, composed of (a) from 5 to 25 mol % of repeat units of the formula I (b) from 5 to 25 mol % of repeat units of the formula II and/or III (c) from 5 to 20 mol % of one or more repeat units of the formulae IV, V and VI (d) a molar amount corresponding to the total amount of components (a), (b) and (c) excluding the repeat unit of the formula III, of repeat units of the formula VII and (f) repeat units of the formula X, the molar proportions of components (a), (b), (c), (d) and (f) in each case adding up to 100 mol %.
Claim 4
Dependent Claim
62 words
A wholly aromatic mesomorphic polyester amide as claimed in claim 1, which contains as component (a) from 5 to 20 mol % of repeat units of the formula I, as component (b) from 5 to 20 mol % of repeat units of the formula II and as component (c) from 5 to 20 mol % of repeat units of the formula IV.
Claim 5
Dependent Claim
67 words
A wholly aromatic mesomorphic polyester amide as claimed in claim 1, which contains as component (a) from 5 to 20 mol % of repeat units of the formula I, as component (b) from 5 to 20 mol % of repeat units of the formula III and as component (c) from 5 to 20 mol % of a mixture of repeat units of the formulae IV and V.
Claim 6
Dependent Claim
62 words
A wholly aromatic mesomorphic polyester amide as claimed in claim 1, which contains as component (a) from 5 to 20 mol % of repeat units of the formula I, as component (b) from 5 to 20 mol % of repeat units of the formula III and as component (c) from 5 to 20 mol % of repeat units of the formula IV.
Claim 7
Dependent Claim
20 words
A wholly aromatic mesomorphic polyester amide as claimed in claim 1, which has a glass transition temperature Tg 140° C.
Claim 8
Dependent Claim
11 words
A fiber from a polyester amide as claimed in claim 1.
Claim 9
Dependent Claim
11 words
A film from a polyester amide as claimed in claim 1.
Claim 10
Dependent Claim
11 words
A molding from a polyester amide 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) | 1992-03-27 | 1992-09-26 | 1993-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-03-27 | 1996-09-26 | 1997-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-03-27 | 2000-09-26 | 2001-03-28 | $7700.00 | Window Closed / Lapsed |