US4540748A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyetherimides
Assignee: BP Corp North America Inc
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Filing: 1984-06-29
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Granted: 1985-09-10
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Expires: 2004-06-29
Abstract
Abstract Described herein are novel polyetherimide produced by the reaction of a dianhydride and a diamine having a molecular weight ≧1500. These polyetherimides have good melt processability and a good combination of high temperature properties.
Inventors
- 👤 Markus Matzner
- 👤 Donald M. Papuga
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 05:01
CPC Classifications
C; C08; C08G; C08G73/00; C08G73/06; C08G73/10; C08G73/1046; C08G73/1053; C08G73/1057; C08G73/1064; C08G73/1067; C08G73/1071
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
168 words
A polyetherimide produced by the reaction of a dianhydride of the formula: ##STR43## wherein Z is a member of the class consisting of ##STR44## and (2) divalent organic radicals of the general formula: ##STR45## where X is a member selected from the class consisting of divalent radicals of the formulas, ##STR46## where q is 0 or 1, y is a whole number from 1 to 5, and R is a divalent organic radical selected from the class consisting of (1) aromatic hydrocarbon radicals having from 6-20 carbon atoms and halogenated derivatives thereof, (2) alkylene radicals and cycloalkylene radicals having from 2-20 carbon atoms, C.sub.(2-8), alkylene terminated polydiorganosiloxane, and (3) divalent radicals included by the formula ##STR47## where Q is a member selected from the class consisting of ##STR48## where x is a whole number from 1 to 5 inclusive, and a diamine of the formula: H.sub.2 N--R--NH.sub.2 wherein R is an aliphatic polyamide, aliphatic aromatic polyamide, heterocyclic polyamide, aromatic polyether or poly(ether ketone) having a molecular weight ≧1500.
Claim 2
Dependent Claim
168 words
A polyetherimide produced by the reaction of a dianhydride of the formula: ##STR43## wherein Z is a member of the class consisting of ##STR44## and (2) divalent organic radicals of the general formula: ##STR45## where X is a member selected from the class consisting of divalent radicals of the formulas, ##STR46## where q is 0 or 1, y is a whole number from 1 to 5, and R is a divalent organic radical selected from the class consisting of (1) aromatic hydrocarbon radicals having from 6-20 carbon atoms and halogenated derivatives thereof, (2) alkylene radicals and cycloalkylene radicals having from 2-20 carbon atoms, C.sub.(2-8), alkylene terminated polydiorganosiloxane, and (3) divalent radicals included by the formula ##STR47## where Q is a member selected from the class consisting of ##STR48## where x is a whole number from 1 to 5 inclusive, and a diamine of the formula: H.sub.2 N--R--NH.sub.2 wherein R is an aliphatic polyamide, aliphatic aromatic polyamide, heterocyclic polyamide, aromatic polyether or poly(ether ketone) having a molecular weight ≧1500.
Claim 3
Dependent Claim
59 words
A polyetherimide as defined in claim 1 wherein the diamine is of the formula: H 2 NR'NH--(COR 2 CONHR'NH) n COR 2 CONHR'NH 2 wherein R' and R 2 are straight chain or branched alkylene, and may be the same or different; n is an integer such that the molecular weight of the diamino-terminated oligomer is at least 1,500.
Claim 4
Dependent Claim
36 words
A polyetherimide as defined in claim 1 wherein the diamine is of the formula: H.sub.2 NR'NH[CO(CH.sub.2).sub.x NH].sub.m CO(CH.sub.2).sub.x NH.sub.2 R' being as defined in claim 2 and m is such that the molecular weight is ≧1,500.
Claim 5
Dependent Claim
44 words
A polyetherimide as defined in claim 1 wherein the diamine is of the following formula: H.sub.2 NR'NH--(COR.sup.3 CONHR'NH).sub.n COR.sup.3 CONHR'NH.sub.2 R 3 is an aromatic mono or polynuclear residue of C 6 -C 20 and R' and n are as defined in claim 2.
Claim 6
Dependent Claim
43 words
A polyetherimide as defined in claim 1 wherein the diamine is of the following formula: H.sub.2 NR.sub.3 NH--(COR.sup.2 CONHR.sub.3 NH).sub.n COR.sup.2 CONR.sub.3 NH.sub.2 wherein R 2 and n are as defined in claim 2 and R 3 is as defined in claim 4.
Claim 7
Dependent Claim
15 words
A polyetherimide as defined in claim 1 wherein the diamine is an amino-terminated poly(aryl ether).
Claim 8
Dependent Claim
15 words
A polyetherimide as defined in claim 1 wherein the diamine is an amino-terminated poly(aryl ketone).
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) | 1988-09-09 | 1989-03-11 | 1989-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-09-09 | 1993-03-11 | 1993-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-09-09 | 1997-03-11 | 1997-09-10 | $7700.00 | Window Closed / Lapsed |