US5059242A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Seed layer compositions containing organogold and organosilver compounds
Assignee: AMP Akzo Corp
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Filing: 1990-04-27
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Granted: 1991-10-22
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Expires: 2010-04-27
Abstract
Abstract A fluid composition for producing a gold seed layer on a substrate for an electrical circuit, which comprises an organogold and an organosliver compound present as 0.5 to 10 parts by weight silver per 100 parts by weight gold. In preferred compositions the silver is present as 0.8 to 6 parts by weight per 100 parts gold. The process improves seed layer to substrate adhesion.
Inventors
- 👤 Michael G. Firmstone
- 👤 Andrew Lindley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:39
CPC Classifications
H; H05; H05K; H05K3/00; H05K3/22; H05K3/24; H05K3/245; H05K3/246; C; C23; C23C; C23C18/00; C23C18/02; C23C18/08
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
58 words
A fluid composition suitable for coating a substrate and producing a gold seed layer thereon by firing the coated substrate to thermally decompose the fluid composition said fluid composition comprising an organogold compound, a resin and an organosilver compound present in an amount equal to 0.5 to 10 parts by weight silver per 100 parts by weight gold.
Claim 2
Dependent Claim
58 words
A fluid composition suitable for coating a substrate and producing a gold seed layer thereon by firing the coated substrate to thermally decompose the fluid composition said fluid composition comprising an organogold compound, a resin and an organosilver compound present in an amount equal to 0.5 to 10 parts by weight silver per 100 parts by weight gold.
Claim 3
Dependent Claim
31 words
A fluid composition according to claim 1, wherein the organosilver compound is present in an amount equal to 0.8 to 6 parts by weight silver per 100 parts by weight gold.
Claim 4
Dependent Claim
28 words
A fluid composition according to claim 1, wherein the organogold and organosilver compounds have thermal decomposition temperatures 100° to 350° C. below the decomposition temperature of the resin.
Claim 5
Dependent Claim
28 words
A fluid composition according to claim 3, wherein the organogold and organosilver compounds have thermal decomposition temperatures at least 200° C. below the decomposition temperature of the resin.
Claim 6
Dependent Claim
28 words
A fluid composition according to claim 4, wherein the organogold and organosilver compounds have thermal decomposition temperatures at least 250° C. below the decomposition temperature of the resin.
Claim 7
Dependent Claim
30 words
A fluid composition according to claim 1, wherein the organosilver compounds are selected from the group consisting of silver sulphoresinates, silver terpene sulphides, aryl mercaptides of silver, and silver alkanoates.
Claim 8
Dependent Claim
30 words
A fluid composition according to claim 6, wherein the organosilver compound is a silver alkanoate and the alkanoate comprises tertiary alkanoates containing eight to sixteen carbon atoms and mixtures thereof.
Claim 9
Dependent Claim
14 words
A fluid composition according to claim 7, wherein the silver alkanoate is silver neodecanoate.
Claim 10
Dependent Claim
16 words
A fluid composition according to claim 1, wherein the organometallic gold compound is a gold tert.-dodecylmercaptide.
Claim 11
Dependent Claim
37 words
A fluid composition according to claim 1, further comprising a fluid vehicle selected from the group consisting of xylene, high boiling petroleum fractions, substituted aromatics, terpenes, alcohols, glycol ethers, esters, glycol ether esters and compatible mixtures thereof.
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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) | 1994-10-21 | 1995-04-22 | 1995-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-10-21 | 1999-04-22 | 1999-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-10-21 | 2003-04-22 | 2003-10-22 | $7700.00 | Window Closed / Lapsed |