US3726945A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Homogeneous mixtures of polyamides and hydroxyl-containing polyolefines
Assignee: Bayer AG
•
Filing: 1972-02-11
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Granted: 1973-04-10
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Expires: 1992-02-11
Abstract
Abstract The invention relates to homogeneous injection mouldable compositions which comprise 70 to 99.9 percent by weight of a polyamide and 0.1 to 30 percent by weight of a hydroxylcontaining polyolefine. Saponified copolymers of ethylene and vinyl acetate are suitable for use as hydroxyl-containing polyolefines.
Inventors
- 👤 W Nielinger
- 👤 L Bottenbruch
- 👤 D Michael
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:03
CPC Classifications
C; C08; C08L; C08L77/00; C08L77/06
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
26 words
The composition as claimed in claim 1, in which the polyamide is polycaprolactam and the hydroxyl-containing polyolefine is a saponified copolymer of ethylene and vinyl acetate.
Claim 2
Dependent Claim
23 words
The homogeneous injection moldable composition as claimed in claim 1, which consists of a homogeneous melt blend of said polyamide and said polyolefine.
Claim 3
Dependent Claim
23 words
The homogeneous melt blend composition as claimed in claim 3, obtained by adding said hydroxyl-containing polyolefine to a melt of a preformed polyamide.
Claim 4
Dependent Claim
20 words
The homogeneous melt blend composition as claimed in claim 3, obtained by adding said hydroxyl-containing polyolefine to polyamide-forming starting materials.
References Cited (Backward Citations)
CA465337A
Cited
US2473403A
Cited
US3313789A
Cited
US3529924A
Cited
US3454512A
Cited
GB1127479A
Cited
US3636136A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-04-09 | 1976-10-09 | 1977-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-09 | 1980-10-09 | 1981-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-09 | 1984-10-09 | 1985-04-10 | $7700.00 | Window Closed / Lapsed |