US4264747A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High impact strength styrene-acrylonitrile resin blend
Assignee: Uniroyal Chemical Co Inc
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Filing: 1980-07-14
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Granted: 1981-04-28
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Expires: 2000-07-14
Abstract
Abstract High impact strength gum plastics are prepared by blending a styrene acrylonitrile resin with a styrene-ethylene-butylene-styrene block copolymer which has grafted on to it an acrylonitrile resin; preferably styrene acrylonitrile.
Inventors
- 👤 Charles F. Paddock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:43
CPC Classifications
C; C08; C08L; C08L25/00; C08L25/02; C08L25/04; C08L25/08; C08L25/12; C08F; C08F287/00; C08L51/00; C08L51/006
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
48 words
A high impact resistant gum plastic composition comprising (A) a styrene-acrylonitrile resin (SAN); and (B) a graft polymer formed by graft polymerizing (a) at least one polar monomer onto (b) a styrene-ethylene-butylene-styrene block copolymer (SEBS); wherein the ratio of (A) to (B) is about 70/30 to about 20/80.
Claim 2
Dependent Claim
48 words
A high impact resistant gum plastic composition comprising (A) a styrene-acrylonitrile resin (SAN); and (B) a graft polymer formed by graft polymerizing (a) at least one polar monomer onto (b) a styrene-ethylene-butylene-styrene block copolymer (SEBS); wherein the ratio of (A) to (B) is about 70/30 to about 20/80.
Claim 3
Dependent Claim
18 words
The composition of claim 1 wherein the ratio of (A) to (B) is about 60/40 to about 25/75.
Claim 4
Dependent Claim
18 words
The composition of claims 1 or 2 wherein the polar monomer is a mixture of styrene and acrylonitrile.
Claim 5
Dependent Claim
26 words
The composition of claim 1 wherein the graft polymer comprises about 5 to about 90% of polymerized polar monomer by weight based on the graft polymer.
Claim 6
Dependent Claim
39 words
The composition of claim 4 wherein the polar monomer is styrene, halostyrene, alpha-methyl styrene para methyl styrene, acrylonitrile, methacrylonitrile, acrylic acid, methylacrylic acid, vinylchloride, C 1 -C 8 alkyl esters of acrylic acid and methacrylic acid or mixtures thereof.
Claim 7
Dependent Claim
28 words
The composition of claims 1 or 2 wherein the graft polymer is formed by graft polymerizing styrene and an olefinally unsaturated nitrile monomer in the presence of SEBS.
Claim 8
Dependent Claim
13 words
The composition of claim 6 wherein the nitrile monomer is acrylonitrile or methacrylonitrile.
Claim 9
Dependent Claim
25 words
The composition of claim 4 wherein the graft polymer comprises about 10 to about 70% by weight of polar monomer based on the graft polymer.
Claim 10
Dependent Claim
25 words
The composition of claim 8 wherein the graft polymer comprises about 20% to about 60% by weight of polar monomer based on the graft polymer.
References Cited (Backward Citations)
US3489821A
Cited
US4126600A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-04-27 | 1984-10-27 | 1985-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-04-27 | 1988-10-27 | 1989-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-04-27 | 1992-10-27 | 1993-04-28 | $7700.00 | Window Closed / Lapsed |