US3625922A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for preventing electrification of synthetic high polyamides
Assignee: SNIA Viscosa SpA
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Filing: 1968-04-25
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Granted: 1971-12-07
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Expires: 1988-04-25
Abstract
Abstract Synthetic high polymers, such as polyamides, polyolefins, polystyrenes, polyvinyl chloride, polyvinylidene chloride, copolymers thereof and polymer blends thereof can be prevented from electrification by incorporating homogeneously imidazole or its derivatives into said high polymers. The amount of the imidazole or a derivative thereof added is 0.005 to 20 percent by weight based on the amount of the high polymer.
Inventors
- 👤 Satoshi Ando
- 👤 Kyoichi Fujimura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:03
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/34; C08K5/3442; C08K5/3445; C08K5/0008; C08K5/0075; Y; Y10; Y10S; Y10S260/00; Y10S260/15; Y10S260/19
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
21 words
The composition of claim 1, wherein said imidazole constitutes 0.05 to 5.0 percent by weight based upon said homopolyamide or copolyamide.
References Cited (Backward Citations)
US3152094A
Cited
US3350364A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-12-06 | 1975-06-07 | 1975-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-06 | 1979-06-07 | 1979-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-06 | 1983-06-07 | 1983-12-07 | $7700.00 | Window Closed / Lapsed |