US4745157A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Impact modification of polyphenylene ether-polyamide compositions
Assignee: General Electric Co
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Filing: 1986-12-18
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Granted: 1988-05-17
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Expires: 2006-12-18
Abstract
Abstract Resinous compositions having excellent impact resistance are obtained by initially blending at least one polyphenylene ether or a blend thereof with at least one polystyrene, a functionalizing compound such as maleic anhydride or fumaric acid and an unfunctionalized elastomeric olefin copolymer such as an EPDM, and subsequently blending the resulting product with at least one polyamide.
Inventors
- 👤 John B. Yates, III
- 👤 Timothy J. Ullman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:43
CPC Classifications
C; C08; C08L; C08L71/00; C08L71/08; C08L71/10; C08L71/12; C08L71/126; C08G; C08G65/00; C08G65/34; C08G65/48; C08G65/485; C08L77/00; Y; Y10; Y10S; Y10S525/00; Y10S525/905
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
102 words
A method for preparing a resinous composition which comprises: (I) intimately blending, at a temperature in the range of about 270°-350° C. (A) at least one polyphenylene ether, or a mixture thereof with at least one polystyrene; (B) at least about 0.5 parts by weight, per 100 parts of component A, of a functionalizing compound containing at least one carbon-carbon double or triple bond and at least one carboxylic acid group or functional derivative thereof; and (C) at least one unfunctionalized elastomeric olefin copolymer comprising a major proportion of structural units derived from ethylene and at least one C 3-8 1-olefin; and
Claim 2
Independent Claim
102 words
A method for preparing a resinous composition which comprises: (I) intimately blending, at a temperature in the range of about 270°-350° C. (A) at least one polyphenylene ether, or a mixture thereof with at least one polystyrene; (B) at least about 0.5 parts by weight, per 100 parts of component A, of a functionalizing compound containing at least one carbon-carbon double or triple bond and at least one carboxylic acid group or functional derivative thereof; and (C) at least one unfunctionalized elastomeric olefin copolymer comprising a major proportion of structural units derived from ethylene and at least one C 3-8 1-olefin; and
Claim 3
Dependent Claim
23 words
(II) blending, at a temperature in the range of about 270°-350° C., the product of step I with (D) at least one polyamide.
Claim 4
Dependent Claim
23 words
(II) blending, at a temperature in the range of about 270°-350° C., the product of step I with (D) at least one polyamide.
Claim 5
Dependent Claim
80 words
A method according to claim 1 wherein the polyphenylene ether comprises a plurality of structural units having the formula ##STR6## and in each of said units independently, each Q 1 is independently halogen, primary or secondary lower alkyl, phenyl, haloalkyl, aminoalkyl, hydrocarbonoxy, or halohydrocarbonoxy wherein at least two carbon atoms separate the halogen and oxygen atoms; and each Q 2 is independently hydrogen, halogen, primary or secondary lower alkyl, phenyl, haloalkyl, hydrocarbonoxy or halohydrocarbonoxy as defined for Q 1 .
Claim 6
Dependent Claim
16 words
A method according to claim 2 wherein the functionalizing compound is maleic anhydride or fumaric acid.
Claim 7
Dependent Claim
24 words
A method according to claim 3 wherein component C is a copolymer of ethylene and propylene or of ethylene, propylene, and a non-conjugated diene.
Claim 8
Dependent Claim
15 words
A method according to claim 4 wherein the polyamide is a polyamide-6/6 or a polyamide-6.
Claim 9
Dependent Claim
13 words
A method according to claim 5 wherein component A is a poly(2,6-dimethyl-1,4-phenylene ether).
Claim 10
Dependent Claim
22 words
A method according to claim 6 wherein the proportion of component B is about 0.5-1.5 parts per 100 parts of component A.
Claim 11
Dependent Claim
16 words
A method according to claim 6 wherein steps I and II are achieved by melt blending.
Claim 12
Dependent Claim
12 words
A method according to claim 6 wherein the polyamide is a polyamide-6/6.
Claim 13
Dependent Claim
12 words
A method according to claim 6 wherein the polyamide is a polyamide-6.
Claim 14
Dependent Claim
25 words
A method according to claim 8 wherein component C is present in the amount of about 5-50% by weight based on components A and D.
Claim 15
Dependent Claim
37 words
A method according to claim 11 wherein there is also blended in step I about 5-50 parts, per 100 parts of component A, of a styrene-butadiene-styrene triblock copolymer as an impact modifier for the polyphenylene ether phase.
Claim 16
Dependent Claim
18 words
A method according to claim 12 wherein the butadiene midblock of said impact modifier has been selectively hydrogenated.
Claim 17
Dependent Claim
19 words
A method according to claim 11 wherein component C is a copolymer of ethylene, propylene and a non-conjugated diene.
Claim 18
Dependent Claim
24 words
A method according to claim 11 wherein component A is present in the amount of about 25-75% by weight of components A and D.
Claim 19
Dependent Claim
59 words
A method according to claim 6 wherein the polyphenylene ether has been functionalized by reaction with a compound containing at least two functional groups selected from the group consisting of (1) carbon-carbon double and triple bonds and (2) carboxylic acid groups or functional derivatives thereof, at least one of said carboxylic acid groups or functional derivatives thereof being present.
Claim 20
Dependent Claim
10 words
A resinous composition prepared by the method of claim 1.
Claim 21
Dependent Claim
10 words
A resinous composition prepared by the method of claim 4.
Claim 22
Dependent Claim
10 words
A resinous composition prepared by the method of claim 6.
Claim 23
Dependent Claim
10 words
A resinous composition prepared by the method of claim 9.
Claim 24
Dependent Claim
10 words
A resinous composition prepared by the method of claim 10.
Claim 25
Dependent Claim
10 words
A resinous composition prepared by the method of claim 12.
Claim 26
Dependent Claim
10 words
A resinous composition prepared by the method of claim 13.
Claim 27
Dependent Claim
10 words
A resinous composition prepared by the method of claim 14.
References Cited (Backward Citations)
US4315086A
Cited
WO1985005372A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-05-17 | 1991-11-16 | 1992-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-05-17 | 1995-11-16 | 1996-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-05-17 | 1999-11-16 | 2000-05-17 | $7700.00 | Window Closed / Lapsed |