US4468506A
Expired / Lapsed
US
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Polyetherimide blends
Assignee: General Electric Co
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Filing: 1983-12-21
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Granted: 1984-08-28
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Expires: 2003-12-21
Abstract
Abstract Disclosed are blends of two or more polyetherimides. Such blends generally exhibit a high glass transition temperature, e.g., from about 125° to about 210° C., which makes the blends particularly suitable for automotive and appliance applications.
Inventors
- 👤 Fred Holub
- 👤 Daniel E. Floryan
- 👤 Dwain M. White
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:03
CPC Classifications
C; C08; C08L; C08L79/00; C08L79/04; C08L79/08; Y; Y10; Y10S; Y10S525/00; Y10S525/928
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
196 words
A composition comprising: a blend of two or more polyetherimides selected from the class consisting of ##STR12## where a represents a whole number in excess of 1, the group --O--A is selected from: ##STR13## R' being hydrogen, lower alkyl or lower alkoxy, Z is a member of the class consisting of (1) ##STR14## and (2) divalent organic radicals of the general formula: ##STR15## where X is a member selected from the class consisting of divalent radicals of the formulas, ##STR16## 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 6-10 carbon atoms and halogenated derivatives thereof, (2) alkylene radicals and cycloalkylene radicals having from 2-20 carbon atoms, and C (2-8) alkylene terminated polydiorganisiloxane, and (3) divalent radicals included by the formula: ##STR17## where Q is a member selected from the class consisting of ##STR18## where x is a whole number from 1 to 5 inclusive; wherein the glass transition temperatures of the component polyetherimides are different and the glass transition temperature of the blend lies between those of the component polyetherimides.
Claim 2
Dependent Claim
196 words
A composition comprising: a blend of two or more polyetherimides selected from the class consisting of ##STR12## where a represents a whole number in excess of 1, the group --O--A is selected from: ##STR13## R' being hydrogen, lower alkyl or lower alkoxy, Z is a member of the class consisting of (1) ##STR14## and (2) divalent organic radicals of the general formula: ##STR15## where X is a member selected from the class consisting of divalent radicals of the formulas, ##STR16## 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 6-10 carbon atoms and halogenated derivatives thereof, (2) alkylene radicals and cycloalkylene radicals having from 2-20 carbon atoms, and C (2-8) alkylene terminated polydiorganisiloxane, and (3) divalent radicals included by the formula: ##STR17## where Q is a member selected from the class consisting of ##STR18## where x is a whole number from 1 to 5 inclusive; wherein the glass transition temperatures of the component polyetherimides are different and the glass transition temperature of the blend lies between those of the component polyetherimides.
Claim 3
Dependent Claim
54 words
A composition, comprising: a blend of two or more polyetherimides selected from the class consisting of: ##STR19## where Z is ##STR20## and R is selected from hexamethylene, ##STR21## wherein the glass transition temperatures of the component polyetherimides are different and the glass transition temperature of the blend lies between those of the component polyetherimides.
Claim 4
Dependent Claim
54 words
A composition, comprising: a blend of two or more polyetherimides selected from the class consisting of: ##STR19## where Z is ##STR20## and R is selected from hexamethylene, ##STR21## wherein the glass transition temperatures of the component polyetherimides are different and the glass transition temperature of the blend lies between those of the component polyetherimides.
Claim 5
Dependent Claim
15 words
A composition in accordance with claim 2 containing a first polyetherimide where R is ##STR22##
Claim 6
Dependent Claim
15 words
A composition in accordance with claim 3 containing a second polyetherimide where R is hexamethylene.
Claim 7
Dependent Claim
15 words
A composition in accordance with claim 3 containing a second polyetherimide where R is ##STR23##
Claim 8
Dependent Claim
37 words
A composition in accordance with claim 1 comprising a first and second polyetherimides each formed by the reaction of aromatic bis(ether anhydrides) of the formula ##STR24## with one or more organic diamines of the formula H.sub.2 N--R--NH.sub.2
Claim 9
Dependent Claim
48 words
A composition in accordance with claim 6 wherein the bis ether anhydride of the first and second polyetherimide is of the formula ##STR25## the diamine of the first polyetherimide is ##STR26## and the diamine of the second polyetherimide is selected from one or more of hexamethylene diamine, ##STR27##
Claim 10
Dependent Claim
19 words
A composition in accordance with claim 7 where the diamine for the second polyetherimide is hexamethylene diamine and ##STR28##
Claim 11
Dependent Claim
12 words
A composition in accordance with claim 2 containing one or more fillers.
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) | 1987-08-28 | 1988-02-27 | 1988-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-08-28 | 1992-02-27 | 1992-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-08-28 | 1996-02-27 | 1996-08-28 | $7700.00 | Window Closed / Lapsed |