US4481325A
Expired / Lapsed
US
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Polyalkylenelactone modified polyetherimides
Assignee: General Electric Co
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Filing: 1983-12-29
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Granted: 1984-11-06
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Expires: 2003-12-29
Abstract
Abstract This invention is concerned with a polyalkylenelactone/polyetherimide blend. More particularly, the invention is concerned with poly(ε-caprolactone)/polyetherimide blends which exhibit improved flow properties and desirable mechanical and physical properties.
Inventors
- 👤 Harold F. Giles, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 21:31
CPC Classifications
C; C08; C08L; C08L79/00; C08L79/04; C08L79/08
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
26 words
A polyalkylenelactone modified polyetherimide comprising a polyetherimide and a flow-modifying amount of polyalkylenelactone having a molecular weight in the range of from about 4,000 to 45,000.
Claim 2
Dependent Claim
26 words
A polyalkylenelactone modified polyetherimide comprising a polyetherimide and a flow-modifying amount of polyalkylenelactone having a molecular weight in the range of from about 4,000 to 45,000.
Claim 3
Dependent Claim
21 words
The polyalkylenelactone modified polyetherimide of claim 1 wherein the polyalkylenelactone is selected from the group consisting of polyvalerlactone, polycaprolactone and polycapryllactone.
Claim 4
Dependent Claim
12 words
The polyalkylenelactone modified polyetherimide of claim 2 wherein the polyalkylenelactone is poly(Ε-caprolactone).
Claim 5
Dependent Claim
22 words
The polyalkylenelactone modified polyetherimide of claim 3, wherein the molecular weight of the poly(ε-caprolactone) is in the range of 5,000 to 40,000.
Claim 6
Dependent Claim
25 words
The polyalkylenelactone modified polyetherimide of claim 1 wherein the polyalkylenelactone is present in amounts from 0.2 to about 5.0 weight percent of the polyetherimide/polyalkylenelactone blend.
Claim 7
Dependent Claim
175 words
The polyalkylenelactone modified polyetherimide of claims 1, 2 or 3, wherein the polyetherimide has the formula: ##STR13## where "a" represents a whole number in excess of 1, the group --O--A< is selected from: ##STR14## R' being hydrogen, lower alkyl or lower alkoxy, Z is a member of the class consisting of (1): ##STR15## and (2) divalent organic radicals of the general formula: ##STR16## where X is a member selected from the class consisting of divalent radicals of the formulas, ##STR17## 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 to about 20 carbon atoms and halogenated derivatives thereof, (2) alkylene radicals and cycloalkylene radicals having from 2 to about 20 carbon atoms, C.sub.( 2-8) alkylene terminated polydiorganosiloxane, and (3) divalent radicals included by the formula: ##STR18## where Q is a member selected from the class consisting of: ##STR19## where x is a whole number from 1 to 5 inclusive.
Claim 8
Dependent Claim
33 words
The polycaprolactam modified polyetherimide of claim 6, wherein the polyetherimide is of the formula: ##STR20## and the divalent bonds of the --O--Z--O-- radical are in the 3,3'; 3,4'; 4,3' or the 4,4' position.
Claim 9
Dependent Claim
17 words
The polyalkylenelactone modified polyetherimide of claim 7, wherein Z is; ##STR21## and R is selected from; ##STR22##
Claim 10
Dependent Claim
15 words
The polyalkylenelactone modified polyetherimide of claim 8, wherein the polyetherimide is of the formula: ##STR23##
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) | 1987-11-06 | 1988-05-07 | 1988-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-11-06 | 1992-05-07 | 1992-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-11-06 | 1996-05-07 | 1996-11-06 | $7700.00 | Window Closed / Lapsed |