US4517339A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Blend of impact modifier, vinyl chloride polymer, and glassy amorphous polymer
Assignee: General Electric Co
•
Filing: 1983-08-04
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Granted: 1985-05-14
•
Expires: 2003-08-04
Abstract
Abstract Polymer blends having good mechanical properties and flame retardancy comprise: (1) an interpolymer comprising: (a) crosslinked (meth)acrylate; (b) crosslinked styrene-acrylonitrile polymeric components; (2) a glassy amorphous polymer, e.g., an acrylic resin or a polymer comprising styrene; and (3) a vinyl chloride polymer.
Inventors
- 👤 Anthony C. Aliberto
- 👤 Joseph Silberberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:40
CPC Classifications
C; C08; C08L; C08L51/00; C08L51/003
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
57 words
A flame retardant blend having good impact resistance and a high heat deflection temperature comprising: (1) a three stage interpolymer comprising: (a) crosslinked (meth)acrylate; (b) crosslinked styrene-acrylonitrile; and (c), as the third stage, uncrosslinked styrene-acrylonitrile components; (2) a glassy amorphous polymer which is an acrylic resin or a polymer comprising styrene; and (3) a vinyl chloride polymer.
Claim 2
Dependent Claim
57 words
A flame retardant blend having good impact resistance and a high heat deflection temperature comprising: (1) a three stage interpolymer comprising: (a) crosslinked (meth)acrylate; (b) crosslinked styrene-acrylonitrile; and (c), as the third stage, uncrosslinked styrene-acrylonitrile components; (2) a glassy amorphous polymer which is an acrylic resin or a polymer comprising styrene; and (3) a vinyl chloride polymer.
Claim 3
Dependent Claim
52 words
A blend as claimed in claim 1 wherein the interpolymer comprises from about 5% to about 50%, by weight of said crosslinked (meth)acrylate component, from about 5% to about 35% by weight of said crosslinked styrene-acrylonitrile component, and from about 15% to about 90% by weight of said uncrosslinked styrene acrylonitrile component.
Claim 4
Dependent Claim
47 words
A blend as claimed in claim 1 which comprises from about 25% to about 65%, by weight, of the interpolymer, from about 20% to about 50%, by weight of the vinyl chloride polymer, and from about 15% to about 40% by weight of the glassy amorphous polymer.
Claim 5
Dependent Claim
52 words
A blend as claimed in claim 1 which comprises from about 35% to about 50%, by weight, of the interpolymer, from about 30% to about 40%, by weight of the vinyl chloride polymer, and from about 20% to about 30% by weight of the glassy amorphous polymer which is an acrylic resin.
Claim 6
Dependent Claim
47 words
A blend as claimed in claim 2 which comprises from about 25% to about 65%, by weight, of the interpolymer, from about 20% to about 50%, by weight of the vinyl chloride polymer, and from about 15% to about 40% by weight of the glassy amorphous polymer.
Claim 7
Dependent Claim
52 words
A blend as claimed in claim 2 which comprises from about 35% to about 50%, by weight, of the interpolymer, from about 30% to about 40%, by weight of the vinyl chloride polymer, and from about 20% to about 30% by weight of the glassy amorphous polymer which is an acrylic resin.
Claim 8
Dependent Claim
37 words
A blend as claimed in claim 1 which contains no more than about 30 parts by weight glassy amorphous polymer and over 30 parts by weight vinyl chloride polymer per 100 parts by weight of the blend.
Claim 9
Dependent Claim
37 words
A blend as claimed in claim 2 which contains no more than about 30 parts by weight glassy amorphous polymer and over 30 parts by weight vinyl chloride polymer per 100 parts by weight of the blend.
Claim 10
Dependent Claim
15 words
A blend as claimed in claim 4 in which the acrylic resin is polymethyl methacrylate.
Claim 11
Dependent Claim
15 words
A blend as claimed in claim 6 in which the acrylic resin is polymethyl methacrylate.
Claim 12
Dependent Claim
35 words
A blend as claimed in claim 1 which contains less than about 30 parts by weight polymethyl methacrylate and over 30 parts by weight vinyl chloride polymer per 100 parts by weight of the blend.
Claim 13
Dependent Claim
35 words
A blend as claimed in claim 2 which contains less than about 30 parts by weight polymethyl methacrylate and over 30 parts by weight vinyl chloride polymer per 100 parts by weight of the blend.
Claim 14
Dependent Claim
14 words
A blend as claimed in claim 1 wherein the glassy amorphous polymer comprises styrene.
Claim 15
Dependent Claim
14 words
A blend as claimed in claim 2 wherein the glassy amorphous polymer comprises styrene.
Claim 16
Dependent Claim
14 words
A blend as claimed in claim 5 wherein the glassy amorphous polymer comprises styrene.
Claim 17
Dependent Claim
14 words
A blend as claimed in claim 7 wherein the glassy amorphous polymer comprises styrene.
Claim 18
Dependent Claim
14 words
A blend as claimed in claim 8 wherein the glassy amorphous polymer comprises styrene.
Claim 19
Dependent Claim
15 words
A blend as claimed in claim 1 wherein the glassy amorphous polymer is styrene-acrylonitrile polymer.
Claim 20
Dependent Claim
15 words
A blend as claimed in claim 2 wherein the glassy amorphous polymer is styrene-acrylonitrile polymer.
Claim 21
Dependent Claim
15 words
A blend as claimed in claim 7 wherein the glassy amorphous polymer is styrene-acrylonitrile polymer.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-05-13 | 1988-11-12 | 1989-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-05-13 | 1992-11-12 | 1993-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-05-13 | 1996-11-12 | 1997-05-14 | $7700.00 | Window Closed / Lapsed |