US4478978A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Toughened polyamide blends
Assignee: EIDP Inc
•
Filing: 1982-08-13
•
Granted: 1984-10-23
•
Expires: 2002-08-13
Abstract
Abstract A polyamide molding material having good impact strength at low temperature comprising a blend of 66 nylon; 6 nylon; and a toughening polymer.
Inventors
- 👤 Miguel J. Roura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:49
CPC Classifications
C; C08; C08L; C08L77/00; C08L77/02; C08L77/06; C08L23/00; C08L23/02; C08L23/04; C08L23/08
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
81 words
A thermoplastic polyamide blend comprising: (a) 60-97% by weight of a thermoplastic polyamide which is a mixture of 20-80% by weight 66 nylon and complementally 80-20% by weight 6 nylon, and complementally (b) 3-40% by weight of a polymeric, toughening agent that is an ionic copolymer of at least one α-olefin and at least one α,β-unsaturated carboxylic acid which can contain a third copolymerizable monomer, in which the acid moiety is at least partially ionized by neutralizing with metal basic salts.
Claim 2
Dependent Claim
81 words
A thermoplastic polyamide blend comprising: (a) 60-97% by weight of a thermoplastic polyamide which is a mixture of 20-80% by weight 66 nylon and complementally 80-20% by weight 6 nylon, and complementally (b) 3-40% by weight of a polymeric, toughening agent that is an ionic copolymer of at least one α-olefin and at least one α,β-unsaturated carboxylic acid which can contain a third copolymerizable monomer, in which the acid moiety is at least partially ionized by neutralizing with metal basic salts.
Claim 3
Dependent Claim
20 words
The blend of claim 1 wherein component (b) is a copolymer of ethylene/isobutyl acrylate/methacrylic acid that is 70% zinc neutralized.
Claim 4
Dependent Claim
18 words
Process for preparing the resin of claim 1 wherein the components are physically mixed and then melt compounded.
References Cited (Backward Citations)
US3264272A
Cited
US3516961A
Cited
US3845163A
Cited
US3673277A
Cited
US4018733A
Cited
US4105709A
Cited
US4174358A
Cited
US4174358B1
Cited
US4100223A
Cited
US4335223A
Cited
US4299744A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-10-23 | 1988-04-23 | 1988-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-10-23 | 1992-04-23 | 1992-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-10-23 | 1996-04-23 | 1996-10-23 | $7700.00 | Window Closed / Lapsed |