US3983093A
Expired / Lapsed
US
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Novel polyetherimides
Assignee: General Electric Co
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Filing: 1975-05-19
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Granted: 1976-09-28
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Expires: 1995-05-19
Abstract
Abstract This invention is concerned with a new class of polyetherimides. More particularly, the invention is concerned with polyetherimides derived from the reaction of an organic diamine, a bisphenol dianhydride and a dianhydride selected from the class consisting of pyromellitic dianhydride, a sulfur dianhydride, and a benzophenone dianhydride. The polyetherimide compositions have improved solvent resistance which enhances their value in a wide variety of uses including films, molding compounds, coatings, etc.
Inventors
- 👤 Frank J. Williams, III
- 👤 Paul E. Donahue
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:52
CPC Classifications
C; C08; C08G; C08G73/00; C08G73/06; C08G73/10; C08G73/1042; C08G73/1046; C08G73/1053; C08G73/1067; C08G73/1071; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31551; Y10T428/31623; Y10T428/31652; Y10T428/31678; Y10T428/31681
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
218 words
A polyetherimide of the formula [A].sub.m [B].sub.1.sub.-m, where the m is a number greater than 0 and smaller than 1, where A units are of the formula: ##SPC20## where --O--Z--O-- is in the 3 or 3'- and 4 or 4'-positions and Z is a member of the class consisting of (1) ##SPC21## and (2) divalent organic radicals of the general formula: ##SPC22## where X is a member selected from the class consisting of divalent radicals of the formulas, --C y H 2y --, ##EQU1##--O-- and --S--, where q is 0 or 1, y is a whole number from 1 to 5, R is a divalent organic radical selected from the class consisting of (a) aromatic hydrocarbon radicals having from 6-20 carbon atoms and halogenated derivatives thereof, (b) alkylene radicals and cycloalkylene radicals having from 2-20 carbon atoms, C.sub.(2 -8 ) alkylene terminated polydiorganosiloxane, and (c) divalent radicals included by the formula ##SPC23## where Q is a member selected from the class consisting of --O--, ##EQU2##--S--, and --C x H 2x --, and x is a whole number from 1 to 5 inclusive, and where the B units are of the formulas: ##SPC24## or mixtures thereof, where R is a divalent organic radical as previously defined, and independently a and b represent a whole number in excess of 1.
Claim 2
Dependent Claim
218 words
A polyetherimide of the formula [A].sub.m [B].sub.1.sub.-m, where the m is a number greater than 0 and smaller than 1, where A units are of the formula: ##SPC20## where --O--Z--O-- is in the 3 or 3'- and 4 or 4'-positions and Z is a member of the class consisting of (1) ##SPC21## and (2) divalent organic radicals of the general formula: ##SPC22## where X is a member selected from the class consisting of divalent radicals of the formulas, --C y H 2y --, ##EQU1##--O-- and --S--, where q is 0 or 1, y is a whole number from 1 to 5, R is a divalent organic radical selected from the class consisting of (a) aromatic hydrocarbon radicals having from 6-20 carbon atoms and halogenated derivatives thereof, (b) alkylene radicals and cycloalkylene radicals having from 2-20 carbon atoms, C.sub.(2 -8 ) alkylene terminated polydiorganosiloxane, and (c) divalent radicals included by the formula ##SPC23## where Q is a member selected from the class consisting of --O--, ##EQU2##--S--, and --C x H 2x --, and x is a whole number from 1 to 5 inclusive, and where the B units are of the formulas: ##SPC24## or mixtures thereof, where R is a divalent organic radical as previously defined, and independently a and b represent a whole number in excess of 1.
Claim 3
Dependent Claim
27 words
A polyetherimide of claim 1, where m is greater than about 0.50 and B is of the formula: ##SPC25## where R and b are as previously defined.
Claim 4
Dependent Claim
27 words
A polyetherimide of claim 1, where m is greater than about 0.50 and B is of the formula: ##SPC26## where R and b are as previously defined.
Claim 5
Dependent Claim
27 words
A polyetherimide of claim 1, where m is greater than about 0.50 and B is of the formula: ##SPC27## where R and b are as previously defined.
Claim 6
Dependent Claim
63 words
A polyetherimide of the formula [A] m [B] 1 -m , where m is a number greater than 0.75, where the A units are of the formula: ##SPC28## and where the units are of the formulas: ##SPC29## or mixtures thereof, where R is a divalent organic radical as previously defined, and independently a and b represent a whole number in excess of 1.
Claim 7
Dependent Claim
63 words
A polyetherimide of the formula [A] m [B] 1 -m , where m is a number greater than 0.75, where the A units are of the formula: ##SPC28## and where the units are of the formulas: ##SPC29## or mixtures thereof, where R is a divalent organic radical as previously defined, and independently a and b represent a whole number in excess of 1.
Claim 8
Dependent Claim
20 words
A polyetherimide of claim 5, where B is of the formula: ##SPC30## where R and b are as previously defined.
Claim 9
Dependent Claim
20 words
A polyetherimide of claim 5, where B is of the formula: ##SPC31## where R and b are as previously defined.
Claim 10
Dependent Claim
20 words
A polyetherimide of claim 5, where B is of the formula: ##SPC32## where R and b are as previously defined.
Claim 11
Dependent Claim
35 words
A polyetherimide of claim 5, where the A unit ##SPC33## radical is situated in the 3,3'-, 3,4'-, 4,3'- and the 4,4'-positions, the ratio of 3:3' and 4:4' positions being within the range of from about
Claim 12
Dependent Claim
13 words
A polyetherimide of claim 9, where the ratio of 3:3' and 4,4' positions
Claim 13
Dependent Claim
22 words
A polyetherimide of the formula [A] m [B] 1 -m where A is the formula: ##SPC34## and B is the formula: ##SPC35##
Claim 14
Dependent Claim
22 words
A polyetherimide of the formula [A] m [B] 1 -m where A is the formula: ##SPC34## and B is the formula: ##SPC35##
Claim 15
Dependent Claim
28 words
A polyetherimide of claim 11, where A is the formula: ##SPC36## and B is the formula: ##SPC37## where m is a number equal to at least about 0.6.
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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) | 1979-09-28 | 1980-03-29 | 1980-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-09-28 | 1984-03-29 | 1984-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-09-28 | 1988-03-29 | 1988-09-28 | $7700.00 | Window Closed / Lapsed |