US4683082A
Expired / Lapsed
US
⏱️ 0.0 years remaining
One-component, particle-filled compositions
Assignee: Ercon Inc
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Filing: 1985-03-27
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Granted: 1987-07-28
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Expires: 2005-03-27
Abstract
Abstract Unfavorable interaction is prevented between (a) electroconductive particle fillers and (b) organic resin binders of the type which are normally instable with respect to viscosity when aged in contact with said fillers. Moreover, electroconductivity degradation is also avoided. In a preferred mode of the invention, the particle surface is treated with a coating of an interfacial pacifying agent such as a tetravalent tin compound which both enhances the electroconductive performance of the particles and also is sufficiently compatible with the resin binder to migrate into the binder sufficiently to avoid undue gelling of the binder by particle-borne contamination or residues of such contamination.
Inventors
- 👤 John E. Ehrreich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:40
CPC Classifications
H; H01; H01B; H01B1/00; H01B1/20; H01B1/24; H01B1/22; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2982; Y10T428/2991; Y10T428/2998
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
55 words
A filler composition useful in forming stable electroconductive compositions with organic resin binder systems wherein said filler composition is formed of an electroconductive powder of metal, carbon, or iron oxide, said powders are coated with a quantity of an organotin pacifier agent effective to impart good electroconductivity- and viscosity-stabilizing properties to said systems on aging.
Claim 2
Dependent Claim
55 words
A filler composition useful in forming stable electroconductive compositions with organic resin binder systems wherein said filler composition is formed of an electroconductive powder of metal, carbon, or iron oxide, said powders are coated with a quantity of an organotin pacifier agent effective to impart good electroconductivity- and viscosity-stabilizing properties to said systems on aging.
Claim 3
Dependent Claim
18 words
A filler composition as defined in claim 1 wherein said organotin agent is a tetravalent organotin sulfur compound.
Claim 4
Dependent Claim
17 words
A filler composition as defined in claim 2 wherein said agent comprises tetravalent tin and sulfur-bearing groups.
Claim 5
Dependent Claim
15 words
A filler composition as defined in claim 1 wherein said filler is a metal filler.
Claim 6
Dependent Claim
15 words
A filler as defined in claim 4 wherein said filler is a metal flake filler.
Claim 7
Dependent Claim
15 words
A filler as defined in claim 4 wherein said filler is a non-noble metal flake.
Claim 8
Dependent Claim
14 words
A filler as defined in claim 4 wherein said filler is a precious-metal flake.
Claim 9
Dependent Claim
19 words
A filler as defined in claim 1 wherein said filler is a silver flake powder coated with said agent.
Claim 10
Dependent Claim
15 words
A filler as defined in claim 8 wherein said organotin agent comprises di-octyltin bis(iso-octylmercapto acetate).
Claim 11
Dependent Claim
17 words
A filler as defined in claim 8 wherein said organotin pacifier agent is a dialkyl organotin compound.
Claim 12
Dependent Claim
16 words
A filler as defined in claim 3 wherein said agent is a bulyltin mercapto ester agent.
Claim 13
Dependent Claim
13 words
A filler as defined in claim 8 wherein said agent is stannous octoate.
Claim 14
Dependent Claim
15 words
A filler as defined in claim 8 wherein said agent is a di-n-octoyltin maleate polymer.
Claim 15
Dependent Claim
14 words
A filler as defined in claim 8 wherein said agent is a mercaptoacide ester.
Claim 16
Dependent Claim
15 words
A filler as defined in claim 8 wherein said agent is a mercaptoalcohol ester agent.
Claim 17
Dependent Claim
22 words
A filler as defined in claim 8 wherein said agent is an intimately mixed composition comprising only organotin compound and mercapto-bearing compounds.
Claim 18
Dependent Claim
15 words
A filler as defined in claim 1 wherein said organotin agent comprises di-octyltin bis(iso-octylmercapto acetate).
Claim 19
Dependent Claim
17 words
A filler as defined in claim 1 wherein said organotin pacifier agent is a dialkyl organotin compound.
Claim 20
Dependent Claim
13 words
A filler as defined in claim 1 wherein said agent is stannous octoate.
Claim 21
Dependent Claim
15 words
A filler as defined in claim 1 wherein said agent is a di-n-octoyltin maleate polymer.
Claim 22
Dependent Claim
14 words
A filler as defined in claim 1 wherein said agent is a mercaptoacid ester.
Claim 23
Dependent Claim
15 words
A filler as defined in claim 1 wherein said agent is a mercaptoalcohol ester agent.
Claim 24
Dependent Claim
22 words
A filler as defined in claim 1 wherein said agent is an intimately mixed composition comprising only organotin compound and mercapto-bearing compounds.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-07-27 | 1991-01-26 | 1991-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-07-27 | 1995-01-26 | 1995-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-07-27 | 1999-01-26 | 1999-07-28 | $7700.00 | Window Closed / Lapsed |