Patent JPS5525463A successfully refreshed from Google Patents.
Patent EP0283835A1 successfully refreshed from Google Patents.
EP0283835A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Polyetherimide copolymers, and method for making
Assignee: General Electric Co
•
Filing: 1988-03-08
•
Granted: —
•
Expires: 2008-03-08
Abstract
Abstract The intercondensation of aryldiamine and a mixture of oxydiphthalic anhydride and aromatic bis(ether anhydride), such as 2,2-bis[4-(3,4-dicarboxyphenoxy)phenyl]propane dianhydride, have been found to provide tough flexible transparent copolymer having T g 's from about 217°C to 300°C.
Inventors
- 👤 Donald Richard Berdahl
- 👤 Susan Adams Nye
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-04 16:26
CPC Classifications
C; C08; C08G; C08G73/00; C08G73/06; C08G73/10; C08G73/1042; C08G73/1046; C08G73/1053; C08G73/1057; C08G73/1064; C08G73/1067; C08G73/1071
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
194 words
Polyetherimide copolymers comprising the intercondensation product of reaction of substantially equal molar amounts of (A) aromatic bisanhydride, and (B) aryldiamine, where (A) comprises from about 1 to 99 mole percent of oxydiphthalic anhydride and from about 99 to 1 mole percent of aromatic bis(ether anhydride) of the formula, (B) is selected from aryldiamine of the formula, NH₂R¹NH₂ , R is a member selected from the class consisting of divalent organic radicals of the formulas, and (a) divalent organic radical of the formula, X is a member selected from the class consisting of divalent radicals of the formulas, m is 0 or 1, y is a whole number from 1 to 5, and the divalent bonds of the -O-R-O- radical are equally situated on the phthalic anhydride end groups in the 3,3ʹ-positions, 3,4ʹ- or the 4,4ʹ-positions, and R¹ is a divalent organic radical having from 6-20 carbon atoms and halogenated derivatives thereof, alkylene radicals and cycloalkylene radicals having from 2-20 carbon atoms, C (2-8) alkylene terminated polydiorganosiloxane, and divalent radicals included by the formula, Q is a member selected from the class consisting of and x is a whole number from 1 to 5 inclusive.
Claim 2
Dependent Claim
194 words
Polyetherimide copolymers comprising the intercondensation product of reaction of substantially equal molar amounts of (A) aromatic bisanhydride, and (B) aryldiamine, where (A) comprises from about 1 to 99 mole percent of oxydiphthalic anhydride and from about 99 to 1 mole percent of aromatic bis(ether anhydride) of the formula, (B) is selected from aryldiamine of the formula, NH₂R¹NH₂ , R is a member selected from the class consisting of divalent organic radicals of the formulas, and (a) divalent organic radical of the formula, X is a member selected from the class consisting of divalent radicals of the formulas, m is 0 or 1, y is a whole number from 1 to 5, and the divalent bonds of the -O-R-O- radical are equally situated on the phthalic anhydride end groups in the 3,3ʹ-positions, 3,4ʹ- or the 4,4ʹ-positions, and R¹ is a divalent organic radical having from 6-20 carbon atoms and halogenated derivatives thereof, alkylene radicals and cycloalkylene radicals having from 2-20 carbon atoms, C (2-8) alkylene terminated polydiorganosiloxane, and divalent radicals included by the formula, Q is a member selected from the class consisting of and x is a whole number from 1 to 5 inclusive.
Claim 3
Dependent Claim
15 words
Polyetherimide in accordance with claim 1, where the aromatic bis (ether anhydride) is 2,2-bis[4-(3,4-dicarboxyphenoxy)phenyl]propane dianhydride.
Claim 4
Dependent Claim
12 words
Polyetherimide in accordance with claim 1, where the aryldiamine is metaphenylene diamine.
Claim 5
Dependent Claim
15 words
Polyetherimide in accordance with claim 1, where the polyetherimide is chain stopped with phthalic anhydride.
Claim 6
Dependent Claim
19 words
A transparent tough polyetherimide copolymer film comprising oxydiphthalic anhydride units and aromatic bis(ether anhydride) units intercondensed with aryldiamine units.
Claim 7
Dependent Claim
19 words
A transparent tough polyetherimide copolymer film comprising oxydiphthalic anhydride units and aromatic bis(ether anhydride) units intercondensed with aryldiamine units.
Claim 8
Dependent Claim
17 words
Polyetherimide copolymers in accordance with claim 1, where the aromatic bisanhydride is intercondensed with an aryldiamine mixture.
Claim 9
Dependent Claim
21 words
Polyether amic acid copolymers in accordance with claim 1, resulting from the intercondensation of aromatic bisanhydride and a mixture of aryldiamines.
Claim 10
Dependent Claim
37 words
Polyether amic acid copolymers in accordance with claim 1, which is the intercondensation product of reaction of aromatic bisanhydride comprising 1 to 99 mole percent of oxydiphthalic anhydride and 99 to 1 mole percent of bisphenol-A dianhydride.
Claim 11
Dependent Claim
7 words
Composites of polyetherimide copolymers of claim 1.
Claim 12
Dependent Claim
9 words
Composites of polyether amic acid copolymers of claim 8.
Claim 13
Dependent Claim
8 words
Polyetherimide copolymer films in accordance with claim 1.
Claim 14
Dependent Claim
23 words
Polyetherimide copolymer pellets in accordance with claim 1, having up to 50 mole % of oxydiphthalic anhydride units based on total bisanhydride units.
References Cited (Backward Citations)
US3983093A
Cited
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.