US4338409A
Expired / Lapsed
US
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Elastomeric thermoplastic moulding compositions
Assignee: Bayer AG
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Filing: 1981-05-13
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Granted: 1982-07-06
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Expires: 2001-05-13
Abstract
Abstract Moulding compositions comprising polyamides and (meth) acrylate grafted optionally substituted polybutadienes.
Inventors
- 👤 Ulrich Grigo
- 👤 Friedrich Fahnler
- 👤 Christian Lindner
- 👤 Rudolf Binsack
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:22
CPC Classifications
C; C08; C08L; C08L51/00; C08L51/04
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
136 words
Elastomeric thermoplastic moulding compositions composed of: (A) from 5 to 35%, by weight, of a polyamide; and (B) from 95 to 65%, by weight, of a graft product produced from: (1) from 70 to 95% by weight of a crosslinked polymer consisting of at least 95%, by weight, of optionally substituted butadiene as graft substrate; and (2) from 5 to 30%, by weight of an ester of methacrylic acid and/or acrylic acid and an alcohol containing from 1 to 8 carbon atoms as graft monomer, the gel content of the graft base being >70%, as measured in toluene, the degree of grafting G being ≧0.15 and the average particle diameter of the graft base being from 0.2 to 0.6 μm and the sum of (A) and (B), and (1) and (2) always being 100% by weight.
Claim 2
Dependent Claim
136 words
Elastomeric thermoplastic moulding compositions composed of: (A) from 5 to 35%, by weight, of a polyamide; and (B) from 95 to 65%, by weight, of a graft product produced from: (1) from 70 to 95% by weight of a crosslinked polymer consisting of at least 95%, by weight, of optionally substituted butadiene as graft substrate; and (2) from 5 to 30%, by weight of an ester of methacrylic acid and/or acrylic acid and an alcohol containing from 1 to 8 carbon atoms as graft monomer, the gel content of the graft base being >70%, as measured in toluene, the degree of grafting G being ≧0.15 and the average particle diameter of the graft base being from 0.2 to 0.6 μm and the sum of (A) and (B), and (1) and (2) always being 100% by weight.
Claim 3
Dependent Claim
27 words
Moulding compositions as claimed in claim 1, containing from 10 to 30% by weight of component (A), and from 20 to 70% by weight of component (B).
Claim 4
Dependent Claim
31 words
Moulding compositions as claimed in claim 1 wherein component (B) consists of from 75 to 90% by weight of component (1) and from 25 to 10% by weight of component (2).
Claim 5
Dependent Claim
16 words
Moulding compositions as claimed in claim 1, wherein component (1) is polybutadiene and component (2) methylmethacrylate.
Claim 6
Dependent Claim
25 words
Moulding compositions as claimed in claim 1, wherein as polyamide, polyamide-6 or copolyamides having a polyamide-6 content of more than 50% by weight are used.
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) | 1985-07-05 | 1986-01-04 | 1986-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-07-05 | 1990-01-04 | 1990-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-07-05 | 1994-01-04 | 1994-07-06 | $7700.00 | Window Closed / Lapsed |