US4360636A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Blends of a sulfone polymer and impact resistant interpolymer
Assignee: General Electric Co
•
Filing: 1981-07-27
•
Granted: 1982-11-23
•
Expires: 2001-07-27
Abstract
Abstract Blends of a sulfone polymer, such as polysulfone, polyethersulfone, or polyphenylsulfone, and an impact resistant interpolymer comprising crosslinked acrylic or methacrylic rubber, crosslinked styrene-acrylonitrile, and uncrosslinked styrene-acrylonitrile polymer components are disclosed.
Inventors
- 👤 Joseph Silberberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:40
CPC Classifications
C; C08; C08L; C08L51/00; C08L51/003; C08L81/00; C08L81/06; Y; Y10; Y10S; Y10S525/00; Y10S525/902
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
42 words
A blend comprising: (1) a sulfone polymer and (2) an impact improving amount of an impact resistant interpolymer comprising as the polymeric components crosslinked (meth)acrylate as the first stage, crosslinked styrene-acrylonitrile as the second stage, and uncrosslinked styrene-acrylonitrile as the third stage.
Claim 2
Dependent Claim
42 words
A blend comprising: (1) a sulfone polymer and (2) an impact improving amount of an impact resistant interpolymer comprising as the polymeric components crosslinked (meth)acrylate as the first stage, crosslinked styrene-acrylonitrile as the second stage, and uncrosslinked styrene-acrylonitrile as the third stage.
Claim 3
Dependent Claim
50 words
A blend as claimed in claim 1 wherein the interpolymer comprises from about 5% to about 50%, by weight, of the (meth)acrylate component, from about 5% to about 35%, by weight, of the crosslinked styrene-acrylonitrile component, and from about 15% to about 90%, by weight, of the uncrosslinked styrene-acrylonitrile component.
Claim 4
Dependent Claim
26 words
A blend as claimed in claim 1 or 2 which comprises a weight ratio of sulfone polymer to interpolymer of from about 95:5 to about 50:50.
Claim 5
Dependent Claim
44 words
A blend as claimed in either claim 1 or 2 wherein the (meth)acrylate component of the interpolymer is selected from the group consisting of the crosslinked C 2 -C 10 alkyl acrylates, the crosslinked C 8 -C 22 alkyl methacrylates, and compatible mixtures thereof.
Claim 6
Dependent Claim
26 words
A blend as claimed in either claim 1 or 2 wherein the (meth)acrylate component of the interpolymer is a crosslinked C 4 -C 8 alkyl acrylate.
Claim 7
Dependent Claim
16 words
A blend as claimed in either claim 1 or 2 wherein the sulfone polymer is polysulfone.
Claim 8
Dependent Claim
71 words
A blend as claimed in either claim 1 or 2 wherein the weight ratio of sulfone polymer to interpolymer is from about 95:5 to about 50:50 and the interpolymer comprises from about 5% to about 50% by weight, of a crosslinked polybutyl acrylate component, from about 5% to about 35%, by weight, of the crosslinked styrene-acrylonitrile component, and from about 15% to about 90%, by weight, of the uncrosslinked styrene-acrylonitrile component.
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) | 1985-11-22 | 1986-05-24 | 1986-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-11-22 | 1990-05-24 | 1990-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-11-22 | 1994-05-24 | 1994-11-23 | $7700.00 | Window Closed / Lapsed |