US4337179A
Expired / Lapsed
US
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Polyamide composition
Assignee: Ube Corp
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Filing: 1980-07-01
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Granted: 1982-06-29
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Expires: 2000-07-01
Abstract
Abstract Disclosed is a polyamide composition comprising a polyamide and, incorporated therein, 0.01 to 20% by weight, based on the composition, of imidazole. This composition may further comprise electrically conductive carbon black in an amount of 5 to 50% by weight based on the composition. This polyamide composition is excellent in the fluidity as the melt and a shaped article prepared from this polyamide composition is excellent in the softness.
Inventors
- 👤 Hirozo Uejo
- 👤 Hideo Ishida
- 👤 Masaaki Shinhama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:56
CPC Classifications
H; H01; H01B; H01B1/00; H01B1/20; H01B1/24; C; C08; C08K; C08K3/00; C08K3/02; C08K3/04; C08K5/00; C08K5/16; C08K5/34; C08K5/3442; C08K5/3445
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
36 words
An electrically conductive polyamide composition which comprises a polyamide and, incorporated therein, 0.01 to 20% by weight, based on the composition, of imidazole and 5 to 50% by weight, based on the composition, of carbon black.
Claim 2
Dependent Claim
36 words
An electrically conductive polyamide composition which comprises a polyamide and, incorporated therein, 0.01 to 20% by weight, based on the composition, of imidazole and 5 to 50% by weight, based on the composition, of carbon black.
Claim 3
Dependent Claim
26 words
A polyamide composition as set forth in claim 4 wherein the polyamide is a linear polyamide having a number average molecular weight of 10,000 to 100,000.
Claim 4
Dependent Claim
24 words
A polyamide composition as set forth in claim 4 wherein the amount of imidazole is 0.1 to 15% by weight based on the composition.
Claim 5
Dependent Claim
26 words
An electrically conductive polyamide composition as set forth in claim 1 wherein the amount of imidazole is 0.1 to 5% by weight based on the composition.
Claim 6
Dependent Claim
27 words
An electrically conductive polyamide composition as set forth in claim 1 wherein the amount of carbon black is 10 to 40% by weight based on the composition.
Claim 7
Dependent Claim
19 words
A shaped article prepared from an electrically conductive polyamide composition as set forth in claim 1 by melt-molding thereof.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-06-28 | 1985-12-28 | 1986-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-06-28 | 1989-12-28 | 1990-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-06-28 | 1993-12-28 | 1994-06-29 | $7700.00 | Window Closed / Lapsed |