US4376186A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermoplastic composition having improved impact modifier and process for production
Assignee: General Electric Co
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Filing: 1980-11-26
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Granted: 1983-03-08
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Expires: 2000-11-26
Abstract
Abstract A thermoplastic composition having an improved impact modifier is described. In an admixture of polyphenylene ether and butadiene-modified alkenyl aromatic resin, a resin which is a network polymer combining poly-alkenyl aromatic and polybutadiene membrane is employed. On subjection to high shear, the continuous membrane phase is shredded into discrete segments which impart an increased impact strength to the composition.
Inventors
- 👤 Glenn D. Cooper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 00:58
CPC Classifications
C; C08; C08L; C08L51/00; C08L51/04; C08L71/00; C08L71/08; C08L71/10; C08L71/12; C08L71/123
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
41 words
In a thermoplastic composition comprising an admixture of polyphenylene ether and butadiene-modified alkenyl aromatic resin, the improvement wherein said resin comprises network polymer combining polyalkenyl aromatic resin and polybutadiene membrane, wherein the polybutadiene membrane forms a continuous phase in said resin.
Claim 2
Dependent Claim
41 words
In a thermoplastic composition comprising an admixture of polyphenylene ether and butadiene-modified alkenyl aromatic resin, the improvement wherein said resin comprises network polymer combining polyalkenyl aromatic resin and polybutadiene membrane, wherein the polybutadiene membrane forms a continuous phase in said resin.
Claim 3
Dependent Claim
22 words
The composition of claim 1, wherein the polyphenylene ether and resin are in a weight ratio of from about 1:5 to 5:1.
Claim 4
Dependent Claim
19 words
The composition of claim 1, wherein the resin comprises from about 3 to 15% membrane by total composition weight.
Claim 5
Dependent Claim
12 words
The composition of claim 1, wherein the alkenyl aromatic resin comprises polystyrene.
Claim 6
Dependent Claim
17 words
The composition of claim 1, wherein the resin comprises discrete polybutadiene membrane segments dispersed within said composition.
Claim 7
Dependent Claim
16 words
The composition of claim 5, wherein the polyphenylene ether forms a continuous phase in said composition.
Claim 8
Dependent Claim
22 words
The composition of claim 5 wherein the polyphenylene ether and resin are in a weight ratio of from about 1:5 to 5:1.
Claim 9
Dependent Claim
20 words
The composition of claim 5 wherein the resin comprises from about 3 to 15% membrane segments by total composition weight.
Claim 10
Dependent Claim
12 words
The composition of claim 5 wherein the polyalkenyl aromatic resin comprises polystyrene.
Claim 11
Dependent Claim
40 words
A process for producing the composition of claim 5 comprising subjecting an admixture of polyphenylene ether and network polymer combining polyalkenyl aromatic resin and a continuous phase of polybutadiene membrane to high shear sufficient to produce discrete polybutadiene membrane segments.
Claim 12
Dependent Claim
10 words
The process of claim 10, wherein the composition is molded.
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) | 1986-03-07 | 1986-09-06 | 1987-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-03-07 | 1990-09-06 | 1991-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-03-07 | 1994-09-06 | 1995-03-08 | $7700.00 | Window Closed / Lapsed |