US4246371A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyamide blends
Assignee: Bayer AG
•
Filing: 1979-01-12
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Granted: 1981-01-20
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Expires: 1999-01-12
Abstract
Abstract Polymer blends with high notched impact strength comprising polyamide-6 with a relative viscosity of at least 3,5 and copolymers of ethylene, (meth)acrylic acid and esters of (meth)acrylic acid.
Inventors
- 👤 Rolf V. Meyer
- 👤 Peter Tacke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:53
CPC Classifications
C; C08; C08L; C08L77/00; Y; Y10; Y10S; Y10S525/00; Y10S525/919
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
110 words
A thermoplastic moulding composition with high notched impact strength consisting essentially of (1) 80 to 92% by weight of a polyamide-6 having a relative viscosity of at least 3.5 as measured in a 1% solution in m-cresol at 25° C.; and (2) 8 to 20% by weight of an at least one ternary copolymer consisting of (a) 80 to 95% by weight of ethylene; (b) 1 to 10% by weight of acrylic or methacrylic acid; and (c) 1 to 20% by weight of at least one ester of acrylic or methacrylic acid with a C 2 -C 6 alcohol and having a melt index of 2 to 15 g/10 min.
Claim 2
Dependent Claim
110 words
A thermoplastic moulding composition with high notched impact strength consisting essentially of (1) 80 to 92% by weight of a polyamide-6 having a relative viscosity of at least 3.5 as measured in a 1% solution in m-cresol at 25° C.; and (2) 8 to 20% by weight of an at least one ternary copolymer consisting of (a) 80 to 95% by weight of ethylene; (b) 1 to 10% by weight of acrylic or methacrylic acid; and (c) 1 to 20% by weight of at least one ester of acrylic or methacrylic acid with a C 2 -C 6 alcohol and having a melt index of 2 to 15 g/10 min.
Claim 3
Dependent Claim
19 words
A composition, as claimed in claim 1, wherein component (1) has a relative viscosity of from 3.7 to 4.5.
Claim 4
Dependent Claim
19 words
A composition, as claimed in claim 1, which consists of from 80 to 92% by weight of component (1).
Claim 5
Dependent Claim
20 words
A composition, as claimed in claim 1, wherein component (2) has a melt index of 5 to 10 g/10 min.
Claim 6
Dependent Claim
20 words
A composition, as claimed in claim 1, wherein the ester of component (2c) is an ethyl, n-butyl or tert.-butyl acrylate.
Claim 7
Dependent Claim
14 words
A shaped article produced of a thermoplastic moulding composition, as claimed in claim 1.
Claim 8
Dependent Claim
13 words
A film produced of a thermoplastic moulding composition, as claimed in claim 1.
References Cited (Backward Citations)
CA674595A
Cited
CA740501A
Cited
US3264272A
Cited
US3375219A
Cited
US3472916A
Cited
US3845163A
Cited
JPS481438U
Cited
US4105709A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-01-20 | 1984-07-21 | 1985-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-01-20 | 1988-07-21 | 1989-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-01-20 | 1992-07-21 | 1993-01-20 | $7700.00 | Window Closed / Lapsed |