US4381371A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymer mixtures
Assignee: Bayer AG
•
Filing: 1981-09-15
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Granted: 1983-04-26
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Expires: 2001-09-15
Abstract
Abstract Polymer compositions comprising amorphous polyamides and graft polymers consisting of polybutadiene and grafted units of styrene and acrylonitrile.
Inventors
- 👤 Werner Nielinger
- 👤 Bert Brassat
- 👤 Rudolf Binsack
- 👤 Dieter Neuray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:02
CPC Classifications
C; C08; C08L; C08L77/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
77 words
A polymer composition comprising: (I) from 95 to 70%, by weight, of one or more amorphous polyamides; and (II) from 5 to 30%, by weight, of one or more graft polymers consisting of (a) as graft base, from 50 to 90%, by weight, of a polymer of butadiene and optionally up to 30%, by weight, of one or more α,β-unsaturated monomers; and (b) as a grafted unit, from 5 to 55%, by weight, of styrene and acrylonitrile.
Claim 2
Dependent Claim
77 words
A polymer composition comprising: (I) from 95 to 70%, by weight, of one or more amorphous polyamides; and (II) from 5 to 30%, by weight, of one or more graft polymers consisting of (a) as graft base, from 50 to 90%, by weight, of a polymer of butadiene and optionally up to 30%, by weight, of one or more α,β-unsaturated monomers; and (b) as a grafted unit, from 5 to 55%, by weight, of styrene and acrylonitrile.
Claim 3
Dependent Claim
28 words
A composition as claimed in claim 1 comprising, as (II) (b), from 50 to 95%, by weight, of styrene and from 5 to 50%, by weight, of acrylonitrile.
Claim 4
Dependent Claim
25 words
A composition as claimed in claim 1 wherein said one or more α,β- unsaturated monomers is styrene, acrylonitrile or lower alkyl esters of methacrylic acid.
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) | 1986-04-25 | 1986-10-25 | 1987-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-04-25 | 1990-10-25 | 1991-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-04-25 | 1994-10-25 | 1995-04-26 | $7700.00 | Window Closed / Lapsed |