US4448937A
Expired / Lapsed
US
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Blends of polyetherimides and block poly(esteramides)
Assignee: General Electric Co
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Filing: 1983-04-21
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Granted: 1984-05-15
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Expires: 2003-04-21
Abstract
Abstract Blends of polyetherimides and block poly(esteramides) may contain about 99-1% by weight of the former and about 1-99% of the latter. Particularly useful are polyetherimides containing about 1-30% of the block poly(esteramide), which have improved impact strength and resistance to brittleness. The blends may also contain at least one poly(alkylene dicarboxylate) as a compatibility improver.
Inventors
- 👤 Richard C. Bopp
- 👤 Joseph C. Golba, Jr.
- 👤 Scott A. White
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:50
CPC Classifications
C; C08; C08L; C08L77/00; C08L77/12; C08L79/00; C08L79/04; C08L79/08; Y; Y10; Y10S; Y10S525/00; Y10S525/928
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
96 words
A resinous composition comprising (A) about 99-1% by weight of at least one polyetherimide consisting essentially of chemically combined units of the formula ##STR8## wherein Q 1 is a divalent aromatic hydrocarbon-based radical and Q 2 is a divalent hydrocarbon-based radical, and (B) about 1-99% of at least one block poly(esteramide) having the formula, ##STR9## wherein each R 1 is independently a divalent aliphatic hydrocarbon-based radical, each R 2 is independently a divalent aliphatic hydrocarbon-based radical, each R 3 is independently a divalent aromatic hydrocarbon-based radical, and m and n are each at least about 100.
Claim 2
Dependent Claim
96 words
A resinous composition comprising (A) about 99-1% by weight of at least one polyetherimide consisting essentially of chemically combined units of the formula ##STR8## wherein Q 1 is a divalent aromatic hydrocarbon-based radical and Q 2 is a divalent hydrocarbon-based radical, and (B) about 1-99% of at least one block poly(esteramide) having the formula, ##STR9## wherein each R 1 is independently a divalent aliphatic hydrocarbon-based radical, each R 2 is independently a divalent aliphatic hydrocarbon-based radical, each R 3 is independently a divalent aromatic hydrocarbon-based radical, and m and n are each at least about 100.
Claim 3
Dependent Claim
19 words
A composition according to claim 1 wherein component B is present in the amount of about 1-30% by weight.
Claim 4
Dependent Claim
22 words
A composition according to claim 2 wherein the total number of carbon atoms in R 1 +R 2 is 10 or 11.
Claim 5
Dependent Claim
18 words
A composition according to claim 3 wherein the polyetherimide has a weight average molecular weight of about 10,000-100,000.
Claim 6
Dependent Claim
46 words
A composition according to claim 4 wherein Q 1 has one of the following formulas: ##STR10## wherein each R 4 is independently hydrogen or methyl, R 5 is a straight-chain or branched alkylene radical containing 1-5 carbon atoms, and each X is independently hydrogen or halogen.
Claim 7
Dependent Claim
23 words
A composition according to claim 5 wherein Q 1 has formula V, each X is hydrogen and R 5 is the isopropylidene radical.
Claim 8
Dependent Claim
16 words
A composition according to claim 6 wherein Q 2 has one of the following formulas: ##STR11##
Claim 9
Dependent Claim
19 words
A composition according to claim 7 wherein R 3 is at least one of the toluylene and 4,4'-methylene-bis-phenyl radicals.
Claim 10
Dependent Claim
17 words
A composition according to claim 8 wherein each R 1 and R 2 is tetramethylene or heptamethylene.
Claim 11
Dependent Claim
16 words
A composition according to claim 9 wherein Q 2 is m-phenylene and R 3 is 4,4'-methylene-bis-phenyl.
Claim 12
Dependent Claim
19 words
A composition according to claim 10 wherein component B is present in the amount of about 5-20% by weight.
Claim 13
Dependent Claim
37 words
A composition according to claim 1, 3, 5, 9, 10 or 11 which additionally comprises about 5-25% by weight of (C) at least one poly(alkylene dicarboxylate) wherein the dicarboxylate units are derived from an aromatic dicarboxylic acid.
Claim 14
Dependent Claim
18 words
A composition according to claim 12 wherein the alkylene groups in component C contain about 2-10 carbon atoms.
Claim 15
Dependent Claim
18 words
A composition according to claim 13 wherein the dicarboxylate units in component C are derived from terephthalic acid.
Claim 16
Dependent Claim
19 words
A composition according to claim 14 wherein component C is present in the amount of about 10-20% by weight.
Claim 17
Dependent Claim
21 words
A composition according to claim 15 wherein component C is poly(tetramethylene terephthalate) having a number average molecular weight of about 20,000-50,000.
References Cited (Backward Citations)
US4340697A
Cited
US4328331A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-05-15 | 1987-11-14 | 1988-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-05-15 | 1991-11-14 | 1992-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-05-15 | 1995-11-14 | 1996-05-15 | $7700.00 | Window Closed / Lapsed |