US4373013A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electroconductive powder and process for production thereof
Assignee: Mitsubishi Metal Corp
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Filing: 1980-09-12
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Granted: 1983-02-08
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Expires: 2000-09-12
Abstract
Abstract By pouring a solution containing hydrolyzable tin and antimony salts into an aqueous dispersion of titanium oxide particles and mixing, the salts are caused to hydrolyze, whereby a uniform and strongly adherent coating layer of antimony-containing tin oxide is formed on the surface of each particle of the titanium oxide. The coated powder thus obtained is non-hygroscopic and non-toxic and exhibits stable electroconductivity. Furthermore, since it can possess excellent whiteness, it is suitable for forming the electroconductive layers of electro-thermosensitive papers and electrostatic recording papers, for use as the antistatic agent of resins, and for other uses.
Inventors
- 👤 Motohiko Yoshizumi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:54
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/20; B82; B82Y; B82Y30/00; C; C09; C09C; C09C1/00; C09C1/36; C09C1/3607; C09C1/3653; C09C1/3661; G; G03; G03G; G03G5/00; G03G5/10; G03G5/104; H; H01; H01B; H01B1/00; H01B1/06; H01B1/08; H01C; H01C17/00; H01C17/06; H01C17/065; H01C17/06506; H01C17/06513; H01C17/06533; C01; C01P; C01P2004/00; C01P2004/60; C01P2004/61; C01P2004/64; C01P2004/80; C01P2004/82; C01P2006/00; C01P2006/12; C01P2006/60; C01P2006/80; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12181; Y10T428/29; Y10T428/2982; Y10T428/2991
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
81 words
Electroconductive powder consisting essentially of titanium oxide particles and a coating layer of a mixture of antimony oxide and tin oxide provided on the surfaces of the titanium oxide particles, wherein said titanium oxide particles have a rutile crystalline structure, a purity of at least 98 percent, and a specific surface area of 1 to 20 meter 2 /gram, and said coating layer has a thickness of 0.001 to 0.07 μm and contains 0.1 to 30 percent by weight of antimony.
Claim 2
Dependent Claim
81 words
Electroconductive powder consisting essentially of titanium oxide particles and a coating layer of a mixture of antimony oxide and tin oxide provided on the surfaces of the titanium oxide particles, wherein said titanium oxide particles have a rutile crystalline structure, a purity of at least 98 percent, and a specific surface area of 1 to 20 meter 2 /gram, and said coating layer has a thickness of 0.001 to 0.07 μm and contains 0.1 to 30 percent by weight of antimony.
Claim 3
Dependent Claim
24 words
Electroconductive powder according to claim 1 in which the titanium oxide particles have a specific surface area of 1 to 10 meter 2 /gram.
Claim 4
Dependent Claim
19 words
Electroconductive powder according to claim 1 in which the thickness of the coating layer is 0.007 to 0.07 μm.
Claim 5
Dependent Claim
19 words
Electroconductive powder according to claim 1 in which the thickness of the coating layer is 0.001 to 0.04 μm.
Claim 6
Dependent Claim
20 words
Electroconductive powder according to claim 1 in which the coating layer contains 0.1 to 20 percent by weight of antimony.
Claim 7
Dependent Claim
20 words
Electroconductive powder according to claim 1 in which the coating layer contains 1 to 15 percent by weight of antimony.
References Cited (Backward Citations)
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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) | 1986-02-07 | 1986-08-09 | 1987-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-02-07 | 1990-08-09 | 1991-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-02-07 | 1994-08-09 | 1995-02-08 | $7700.00 | Window Closed / Lapsed |