Patent EP0122305A1 successfully refreshed from Google Patents.
EP0122305A1
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Polyetherimide-polyamide blends
Assignee: General Electric Co
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Filing: 1983-04-15
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Granted: —
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Expires: 2003-04-15
Abstract
Abstract Disclosed are blends comprising from about 40 to 80 wt. % of a polyetherimide and the remainder one or more polyamides. The blends generally have a tensile strength which is greater than the tensile strength of polyetherimide-polyamide blends which do not contain from about 40 to 80% polyetherimide, while still retaining a good combination of other physical properties such as heat distortion characteristics and impact strength. In addition, the blends of the invention may have a flexural strength which is greater than that of other polyetherimide-polyamide blends which do not contain from about 40 to 80% polyetherimide.
Inventors
- 👤 Harold Frazee Giles, Jr.
- 👤 Dwain Montgomery White
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-25 20:45
CPC Classifications
C; C08; C08L; C08L77/00; C08L79/00; C08L79/04; C08L79/08
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
2 words
WE CLAIM:
Claim 2
Dependent Claim
27 words
A composition comprising a blend of (a) polyetherimide and (b) a polyamide where the polyetherimide comprises from about 40% to about 80% of the blend by weight
Claim 3
Dependent Claim
163 words
A composition in accordance with claim 1 wherein the polyetherimide has the formula where a represents a whole number in excess of 1, the group -O-A is selected from: R' being hydrogen, lower alkyl or lower alkoxy, Z is a member of the class consisting of (1) and (2) divalent crganic radicals of the general formula: where X is a member selected from the class consisting of divalent radicals of the formulas, 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 derivaties thereof, (2) alkylene radicals and cycloalkylene radicals having from 2-20 carbon atoms, and C( 2 - 8 ) alkylene terminated polydiorganosiloxane, and (3) divalent radicals included by the formula where Q is a member selected from the class consisting of where x is a whole number from 1 to 5 inclusive.
Claim 4
Dependent Claim
32 words
A composition in accordance with claim 2 wherein the polyetherimide is of the formola: and the divalent bonds of the -0-Z-0- radical being in the 3,3'; 3,4'; 4,3' or the 4,4' position.
Claim 5
Dependent Claim
15 words
A composition in accordance with claim 3 wherein Z is; and R is selected from;
Claim 6
Dependent Claim
14 words
A composition in accordance with claim 4 wherein the polyetherimide is of the formula:
Claim 7
Dependent Claim
59 words
A composition in accordance with claims 1,2,3,4, or 5 wherein the polyamide has repeating structural units of the formula; wherein R 2 , R 3 and R 4 , which may be the same or different, each represents an alkylene group having from 4 to 11 carbon atoms, and n is an integer of 30 to 500 or more.
Claim 8
Dependent Claim
13 words
A composition in accordance with claim 6 wherein the polyamide is nylon 66.
Claim 9
Dependent Claim
13 words
A ccmcesiticn in accordance with claim 6 wherein the polyamide is nylon 12.
References Cited (Backward Citations)
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US4258155A
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EP0033394A1
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US4332929A
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