Patent US2801349A successfully refreshed from Google Patents.
Patent US3725503A successfully refreshed from Google Patents.
US3725503A
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Polyamides with dispersed oxyalkyated grafted polyamides
Assignee: BASF SE
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Filing: 1971-06-03
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Granted: 1973-04-03
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Expires: 1991-06-03
Abstract
Abstract Filaments or fibers of synthetic linear polyamides containing highly oxyalkylated polyamides. The filaments or fibers are notable for their excellent antistatic properties and their soilhiding effect.
Inventors
- 👤 J Kunde
- 👤 H Pohlemann
- 👤 H Hendus
- 👤 G Ramlow
- 👤 G Buechler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:04
CPC Classifications
C; C08; C08L; C08L77/00; Y; Y10; Y10T; Y10T428/00; Y10T428/29
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
32 words
Filaments or fibers as claimed in claim 1, wherein the said ratio of synthetic linear polyamide to chemically combined 1,2-alkylene oxide is from 1 : 15 to 1 : 30 by weight.
Claim 2
Dependent Claim
21 words
Filaments or fibers as claimed in claim 1, containing 3 to 10 percent by weight of the said highly oxyalkylated polyamides.
Claim 3
Dependent Claim
16 words
Filaments or fibers as claimed in claim 1, containing highly oxyalkylated polyamides prepared with ethylene oxide.
Claim 4
Dependent Claim
27 words
Filaments or fibers as claimed in claim 1, containing, after extraction with water, cavities and from 1 to 8 percent by weight of said highly oxyalkylated polyamides.
Claim 5
Dependent Claim
27 words
Filaments or fibers as claimed in claim 1, containing, after extraction with water, cavities and from 1 to 5 percent by weight of said highly oxyalkylated polyamides.
Claim 6
Dependent Claim
11 words
Filaments or fibers as claimed in claim 1, composed of polycaprolactam.
Claim 7
Dependent Claim
11 words
Filaments or fibers as claimed in claim 1, composed of polyhexamethyleneadipamide.
References Cited (Backward Citations)
US3038885A
Cited
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GB1110394A
Cited
US3549724A
Cited
US3514498A
Cited
US3522329A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-04-02 | 1976-10-02 | 1977-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-02 | 1980-10-02 | 1981-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-02 | 1984-10-02 | 1985-04-03 | $7700.00 | Window Closed / Lapsed |