US3666731A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyamide filaments containing high viscosity antistatic agents
Assignee: Monsanto Co
•
Filing: 1970-08-13
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Granted: 1972-05-30
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Expires: 1990-08-13
Abstract
Abstract Static-resistant polyamide fibers are produced by dispersing from 0.1 to 20 percent by weight of a modified polyalkoxylated hydrogenated castor oil (castor wax) into the polyamide melt prior to filament formation. The modified castor wax is the addition product of castor wax and a diepoxide compound having two ethoxyline groups AS TERMINAL GROUPS. The modified castor wax has a higher melt viscosity than the corresponding unmodified castor wax which enables better dispersion thereof in the polyamide melt. As a result, polyamide fibers containing the modified castor wax are more easily processed and are of higher quality.
Inventors
- 👤 Lawrence W Crovatt Jr
- 👤 Ullman C Garrett Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:25
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/15; C08K5/151; C08K5/1515; Y; Y10; Y10S; Y10S524/00; Y10S524/91
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
15 words
The filament of claim 1 wherein said compound is the diglycidyl ether of bis(4-hydroxyphenyl) dimethylmethane.
Claim 2
Dependent Claim
11 words
The filament of claim 1 wherein said compound is butadiene dioxide.
Claim 3
Dependent Claim
29 words
The filament of claim 1 wherein said compound is the diglycidyl ether of polyethylene glycol in which the glycol has a molecular weight between about 150 and about 10,000.
Claim 4
Dependent Claim
11 words
The filament of claim 2 wherein the polycarbonamide is polyhexamethylene adipamide.
Claim 5
Dependent Claim
11 words
The filament of claim 3 wherein the polycarbonamide is polyhexamethylene adipamide.
Claim 6
Dependent Claim
11 words
The filament of claim 4 wherein the polycarbonamide is polyhexamethylene adipamide.
References Cited (Backward Citations)
US3226178A
Cited
US3388104A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-05-30 | 1975-11-29 | 1976-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-30 | 1979-11-29 | 1980-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-30 | 1983-11-29 | 1984-05-30 | $7700.00 | Window Closed / Lapsed |