Patent US4258155A successfully refreshed from Google Patents.
US4258155A
Expired / Lapsed
US
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Blends of polyetherimides and polyamideimides
Assignee: General Electric Co
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Filing: 1979-12-03
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Granted: 1981-03-24
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Expires: 1999-12-03
Abstract
Abstract Blends of polyetherimides and polyamideimides have been found to be useful in the coating and molding arts.
Inventors
- 👤 Fred F. Holub
- 👤 Gary A. Mellinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:33
CPC Classifications
C; C08; C08L; C08L79/00; C08L79/04; C08L79/08
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
166 words
A polymeric blend comprising, by weight, (a) from 5 to 95% of a polyamideimide comprising essentially chemically combined units of the formula ##STR15## and (2) from 95% to 5% of a polyetherimide comprising essentially chemically combined units of the formula ##STR16## where R is a member selected from the class consisting of (a) the following divalent organic radicals: ##STR17## and (b) divalent organic radicals of the general formula, ##STR18## where X is --C y H 2y --, y is a whole number equal to from 1 to 5 inclusive and R 1 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) C.sub.(2-8) alkylene terminated polydiorganosiloxane, and (d) divalent radicals included by the formula, ##STR19## where Q is a member selected from the class consisting of ##STR20## and x is a whole number equal to from 1 to 5 inclusive.
Claim 2
Dependent Claim
166 words
A polymeric blend comprising, by weight, (a) from 5 to 95% of a polyamideimide comprising essentially chemically combined units of the formula ##STR15## and (2) from 95% to 5% of a polyetherimide comprising essentially chemically combined units of the formula ##STR16## where R is a member selected from the class consisting of (a) the following divalent organic radicals: ##STR17## and (b) divalent organic radicals of the general formula, ##STR18## where X is --C y H 2y --, y is a whole number equal to from 1 to 5 inclusive and R 1 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) C.sub.(2-8) alkylene terminated polydiorganosiloxane, and (d) divalent radicals included by the formula, ##STR19## where Q is a member selected from the class consisting of ##STR20## and x is a whole number equal to from 1 to 5 inclusive.
Claim 3
Dependent Claim
23 words
A composition as in claim 1 wherein the polyimide member has the formula ##STR21## where n is a whole number greater than 1.
Claim 4
Dependent Claim
21 words
The composition as in claim 1 wherein the polyamideimide is the product of reaction of trimellitic acid chloride and 4,4'-methylene dianiline.
Claim 5
Dependent Claim
22 words
A composition as in claim 1 wherein the polyamideimide is the product of reaction of trimellitic acid chloride acid and 4,4'-diaminodiphenyl sulfone.
Claim 6
Dependent Claim
20 words
A composition as in claim 1 wherein the polyamideimide is the product of reaction of trimellitic acid chloride and 4,4'-oxydianiline.
Claim 7
Dependent Claim
20 words
A composition as in claim 1 wherein the polyamideimide is the product of reaction of trimellitic acid chloride and m-phenylenediamine.
Claim 8
Dependent Claim
51 words
A composition of matter comprising, by weight, (a) from 95% to 5% of a polyimide resin of the formula ##STR22## where n is a positive integer greater than 1 and (b) from 95% to 5% of a polyamideimide of the formula ##STR23## where m is a positive integer greater than 1.
Claim 9
Dependent Claim
51 words
A composition of matter comprising, by weight, (a) from 95% to 5% of a polyimide resin of the formula ##STR22## where n is a positive integer greater than 1 and (b) from 95% to 5% of a polyamideimide of the formula ##STR23## where m is a positive integer greater than 1.
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) | 1984-03-23 | 1984-09-22 | 1985-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-03-23 | 1988-09-22 | 1989-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-03-23 | 1992-09-22 | 1993-03-24 | $7700.00 | Window Closed / Lapsed |