US5098610A
Expired / Lapsed
US
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Conductive thermoplastic resin composition
Assignee: Mitsubishi Chemical Corp
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Filing: 1990-10-29
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Granted: 1992-03-24
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Expires: 2010-10-29
Abstract
Abstract There is disclosed a conductive thermoplastic resin composition which comprises: (a) 30 to 86% by weight of a thermoplastic aromatic polycarbonate, (b) 2 to 15% by weight of a high density polyethylene having a density of 0.945 to 0.970 g/cm 3 and a melt flow rate of 0.1 to 30 g/10 min, (c) 5 to 20% by weight of a glass fiber having an average diameter of 3 to 15 μm and an average length of 0.05 to 10 mm, (d) 5 to 20% by weight of a carbon fiber having an average diameter of 3 to 20 μm and an average length of 0.03 to 15 mm, and (e) 2 to 15% by weight of a conductive carbon black.
Inventors
- 👤 Michiya Okamura
- 👤 Hiroshi Yui
- 👤 Norio Matsuo
- 👤 Shuji Hamano
- 👤 Takeshi Hatakeyama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 16:46
CPC Classifications
H; H01; H01B; H01B1/00; H01B1/20; H01B1/24; C; C08; C08K; C08K3/00; C08K3/02; C08K3/04; C08K7/00; C08K7/02; C08K7/04; C08K7/06; C08K7/14; C08L; C08L69/00
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
122 words
A conductive thermoplastic resin composition which comprises (a) 30 to 86% by weight of a thermoplastic aromatic polycarbonate, (b) 2 to 15% by weight of a high density polyethylene having a density of 0.945 to 0.970 g/cm 3 and a melt flow rate of 0.1 to 30 g/10 min, (c) 5 to 20% by weight of a glass fiber having an average diameter of 3 to 15 μm and an average length of 0.05 to 10 mm, (d) 5 to 20% by weight of a carbon fiber having an average diameter of 3 to 20 μm and an average length of 0.03 to 15 mm, and (e) 2 to 15% by weight of a conductive carbon black which is oil furnace black.
Claim 2
Dependent Claim
122 words
A conductive thermoplastic resin composition which comprises (a) 30 to 86% by weight of a thermoplastic aromatic polycarbonate, (b) 2 to 15% by weight of a high density polyethylene having a density of 0.945 to 0.970 g/cm 3 and a melt flow rate of 0.1 to 30 g/10 min, (c) 5 to 20% by weight of a glass fiber having an average diameter of 3 to 15 μm and an average length of 0.05 to 10 mm, (d) 5 to 20% by weight of a carbon fiber having an average diameter of 3 to 20 μm and an average length of 0.03 to 15 mm, and (e) 2 to 15% by weight of a conductive carbon black which is oil furnace black.
Claim 3
Dependent Claim
21 words
The resin composition according to claim 1, wherein said high density polyethylene has a density of 0.950 g/cm 3 or higher.
Claim 4
Dependent Claim
23 words
The resin composition according to claim 1, wherein said high density polyethylene has a melt flow rate of 0.5 to 15 g/10 min.
Claim 5
Dependent Claim
29 words
The resin composition according to claim 1, wherein said glass fiber has an average diameter of 5 to 12 μm and an average length of 0.1 to 6 mm.
Claim 6
Dependent Claim
29 words
The resin composition according to claim 1, wherein said carbon fiber has an average diameter of 3 to 10 μm and an average length of 0.5 to 10 mm.
Claim 7
Dependent Claim
38 words
The resin composition according to claim 1, wherein said oil furnace black is at least one selected from the group consisting of Extra Conductive Furnace Black, Super Conductive Furnace Black, Conductive Furnace Black and Super Abrasion Furnace Black.
Claim 8
Dependent Claim
25 words
The resin composition according to claim 1, wherein said carbon black has a BET type specific surface area of 850 m 2 /g or more.
Claim 9
Dependent Claim
16 words
The resin composition according to claim 1, wherein said composition further contains a melamine.cyanuric acid adduct.
Claim 10
Dependent Claim
22 words
The resin composition according to claim 8, wherein said melamine.cyanuric acid adduct has an average particle size of 0.1 to 50 μm.
Claim 11
Dependent Claim
36 words
The resin composition according to claim 8, wherein an amount of said melamine.cyanuric acid adduct is 0.01 to 5 parts by weight based on 100 parts by weight of the sum of Components (a) to (e).
Claim 12
Dependent Claim
22 words
The resin composition according to claim 8, wherein said melamine.cyanuric acid adduct is a melamine.cyanuric acid adduct or a melamine.isocyanuric acid adduct.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-03-24 | 1995-09-23 | 1996-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-03-24 | 1999-09-23 | 2000-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-03-24 | 2003-09-23 | 2004-03-24 | $7700.00 | Window Closed / Lapsed |