US4129615A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plastic alloy of copolymers
Assignee: Lyondell Chemical Technology LP
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Filing: 1977-12-23
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Granted: 1978-12-12
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Expires: 1997-12-23
Abstract
Abstract Thermoplastic molding composition consists essentially of a blend of:
Inventors
- 👤 Ronald A. Fava
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 19:25
CPC Classifications
C; C08; C08L; C08L25/00; C08L25/02; C08L25/04; C08L25/08; C08L25/14; C08L33/00; C08L33/04; C08L33/06; C08L33/10; C08L33/12; C08L51/00; C08L51/04; C08L35/00; C08L35/06; C08L53/00
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
89 words
Thermoplastic molding composition consists essentially of a blend of: A. 20-80% by weight of a copolymer comprising methyl methacrylate and vinyl aromatic compound containing from 20% to 80% of methyl methacrylate and from 20% to 80% of vinyl aromatic compound; and B. from about 20% to about 80% by weight of a copolymer comprising: (aa) an imide derivative of an ethylenically unsaturated dicarboxylic acid constituting from 5% to 35% of the copolymer of B; and (bb) vinyl aromatic compound constituting from 60% to 95% of the copolymer of B;
Claim 2
Dependent Claim
89 words
Thermoplastic molding composition consists essentially of a blend of: A. 20-80% by weight of a copolymer comprising methyl methacrylate and vinyl aromatic compound containing from 20% to 80% of methyl methacrylate and from 20% to 80% of vinyl aromatic compound; and B. from about 20% to about 80% by weight of a copolymer comprising: (aa) an imide derivative of an ethylenically unsaturated dicarboxylic acid constituting from 5% to 35% of the copolymer of B; and (bb) vinyl aromatic compound constituting from 60% to 95% of the copolymer of B;
Claim 3
Dependent Claim
59 words
The composition of claim 1 in which each of A and B is a copolymer having three components, the third component being: (cc) a rubbery block polymer prepared in a stereospecific system using from 5 to 35% vinyl aromatic compound and from 65 to 95% conjugated alkadiene, said rubber block copolymer constituting from 5% to 35% of its copolymer.
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) | 1981-12-11 | 1982-06-12 | 1982-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-12-11 | 1986-06-12 | 1986-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-12-11 | 1990-06-12 | 1990-12-12 | $7700.00 | Window Closed / Lapsed |