US4167596A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preparation and use of electroless plating catalysts
Assignee: Individual
•
Filing: 1978-04-05
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Granted: 1979-09-11
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Expires: 1998-04-05
Abstract
Abstract Electroless plating processes wherein a substrate is contacted with a catalytic composition, contacted with a reducing solution containing a deactivator and then contacted with an electroless plating solution.
Inventors
- 👤 Nathan Feldstein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:39
CPC Classifications
C; C23; C23C; C23C18/00; C23C18/16; C23C18/18; C23C18/20; C23C18/28; H; H05; H05K; H05K3/00; H05K3/10; H05K3/18; H05K3/181
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
117 words
An improved process for the preparation of non-conductor substrates prior to electroless plating comprising the steps of: 1. contacting said substrate with a catalytic composition comprising a non-precious catalytic metal capable of electroless plating initiation, and 2. contacting the treated substrate with a reducing composition comprising a reducing agent and a deactivator capable of deactivating contamination derived from the catalytic composition thereby preventing undesired bulk decomposition of the reducing composition and further whenever said catalytic composition is of a colloidal nature said deactivator is a colloid stabilizer capable of encapsulating the colloid present in said catalytic composition and further whenever said catalytic composition is a solution, said deactivator is a chelating agent capable of complexing metal ions.
Claim 2
Dependent Claim
117 words
An improved process for the preparation of non-conductor substrates prior to electroless plating comprising the steps of: 1. contacting said substrate with a catalytic composition comprising a non-precious catalytic metal capable of electroless plating initiation, and 2. contacting the treated substrate with a reducing composition comprising a reducing agent and a deactivator capable of deactivating contamination derived from the catalytic composition thereby preventing undesired bulk decomposition of the reducing composition and further whenever said catalytic composition is of a colloidal nature said deactivator is a colloid stabilizer capable of encapsulating the colloid present in said catalytic composition and further whenever said catalytic composition is a solution, said deactivator is a chelating agent capable of complexing metal ions.
Claim 3
Dependent Claim
29 words
The process according to claim 1 wherein the catalytic compositions are based upon colloidal dispersion of metals preferably selected from the group consisting of copper, cobalt, iron and nickel.
Claim 4
Dependent Claim
13 words
The process according to claim 1 wheren the deactivator is a colloid stabilizer.
Claim 5
Dependent Claim
13 words
The process according to claim 1 wherein said deactivator is a chelating agent.
Claim 6
Dependent Claim
13 words
The process according to claim 1 wherein said electroless plating is of copper.
Claim 7
Dependent Claim
12 words
The process according to claim 1 wherein said nonconductor substrate is ABS.
Claim 8
Dependent Claim
12 words
The process according to claim 1 wherein said electroless plating is nickel.
Claim 9
Dependent Claim
34 words
The process according to claim 1 wherein said catalytic metal is part of a colloidal state and further may exist in the elemental state, as a compound, or as an alloy and mixtures thereof.
Claim 10
Dependent Claim
15 words
The process according to claim 1 wherein said catalytic composition comprises of a copper compound.
Claim 11
Dependent Claim
16 words
The process according to claim 9 wherein said copper compound is a compound of copper(II) ions.
Claim 12
Dependent Claim
27 words
The process according to claim 1 wherein said non-precious catalytic metal is a metal which in one of its oxidation states is catalytic for electroless plating initiation.
Claim 13
Dependent Claim
36 words
The process according to claim 1 wherein said reducing agent is capable of reducing said catalytic metal and wherein said metal is selected from the group consisting of copper, nickel, cobalt, and iron and mixtures thereof.
Claim 14
Dependent Claim
15 words
The process according to claim 12 wherein said metal of said metal compound is copper.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-09-10 | 1983-03-12 | 1983-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-09-10 | 1987-03-12 | 1987-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-09-10 | 1991-03-12 | 1991-09-11 | $7700.00 | Window Closed / Lapsed |