US4431764A
Expired / Lapsed
US
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Antistatic transparent coating composition
Assignee: Mitsubishi Metal Corp
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Filing: 1982-06-28
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Granted: 1984-02-14
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Expires: 2002-06-28
Abstract
Abstract An antimony-containing tin oxide wherein the content of antimony is 0.1 to 20% by weight is almost white and excels in electric conductivity. By mixing a powder of this antimony-containing tin oxide of a particle size of 0.4 μm or less with a binder resin in a specific ratio, an antistatic coating composition can be obtained. By applying this coating on nonconductive base materials such as electronic/electrical parts and building members, an antistatic effect can be imparted to these base materials without impairing their color tones.
Inventors
- 👤 Motohiko Yoshizumi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:55
CPC Classifications
H; H01; H01B; H01B1/00; H01B1/20; C; C09; C09C; C09C1/00; C09C1/0081; C09D; C09D5/00; C09D5/24; C09K; C09K3/00; C09K3/16; H10; H10W; H10W42/00; H10W42/60; C01; C01P; C01P2004/00; C01P2004/60; C01P2004/62; C01P2004/80; C01P2004/82; C01P2004/84; C01P2004/86; C01P2006/00; C01P2006/12; C01P2006/32; C01P2006/40; C01P2006/60; C01P2006/80; Y; Y10; Y10T; Y10T428/00; Y10T428/27; Y10T428/273
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
81 words
An antistatic, transparent film-forming liquid coating composition comprising a thermoplastic or thermosetting binder resin and an electroconductive powder of 5 to 90% by weight based on the total quantity of said binder resin and said powder, said electroconductive powder comprising an antimony-containing tin oxide wherein the antimony content is 0.1 to 20% by weight and having a particle size of 0.4 μm or less, said antimony being present as Sb 2 O 3 or Sb 2 O 5 or mixtures thereof.
Claim 2
Dependent Claim
81 words
An antistatic, transparent film-forming liquid coating composition comprising a thermoplastic or thermosetting binder resin and an electroconductive powder of 5 to 90% by weight based on the total quantity of said binder resin and said powder, said electroconductive powder comprising an antimony-containing tin oxide wherein the antimony content is 0.1 to 20% by weight and having a particle size of 0.4 μm or less, said antimony being present as Sb 2 O 3 or Sb 2 O 5 or mixtures thereof.
Claim 3
Dependent Claim
29 words
A composition according to claim 1 wherein the content of the electroconductive powder is 40 to 80% based on the total quantity of the powder and the binder resin.
Claim 4
Dependent Claim
18 words
A composition according to claim 1 wherein the electroconductive powder contains 2.5 to 20% by weight of antimony.
Claim 5
Dependent Claim
19 words
A composition according to claim 1 wherein the electroconductive powder has a particle size of 0.2 μm or less.
Claim 6
Dependent Claim
26 words
A composition according to claim 1 wherein the electroconductive powder is obtained by co-precipitation from a common solution of an antimony compound and a tin compound.
Claim 7
Dependent Claim
35 words
A composition according to claim 5 wherein the electroconductive powder is obtained by adding water or an aqueous alkali solution a common solution of antimony chloride and tin chloride and causing co-precipitation through the hydrolysis.
Claim 8
Dependent Claim
26 words
A composition according to claim 5 or 6 wherein the electroconductive powder, after co-precipitation, is further calcinated in an oxidizing atmosphere at 400° to 600° C.
Claim 9
Dependent Claim
49 words
A composition according to claim 1 which contains a dispersing agent selected from the group consisting of an anionic surfactant, a silane coupling agent, and a titanate coupling agent in a quantity of 0.5 to 10 parts by weight based on 100 parts by weight of the electroconductive powder.
Claim 10
Dependent Claim
32 words
A composition according to claim 1 wherein the binder resin is selected from an acrylic resin, a polyester resin, a polyurethane resin, a polyvinyl chloride resin, a polycarbonate resin, and a polypropylene.
Claim 11
Dependent Claim
33 words
A composition according to claim 1 which contains, in addition to the binder resin, a solvent or a dispersion medium for the binder resin and has a viscosity of 5 to 200 centipoises.
Claim 12
Dependent Claim
26 words
A method for applying an antistatic treatment to a nonconductive base material which comprises applying the coating composition of claim 1 on the nonconductive base material.
Claim 13
Dependent Claim
29 words
A method according to claim 11 wherein the coating composition is applied on the base material in a quantity of 1 to 20 g/m 2 , as a solid.
References Cited (Backward Citations)
US3923698A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-02-13 | 1987-08-15 | 1988-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-02-13 | 1991-08-15 | 1992-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-02-13 | 1995-08-15 | 1996-02-14 | $7700.00 | Window Closed / Lapsed |