US4997686A
Expired / Lapsed
US
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Composite electroless plating-solutions, processes, and articles thereof
Assignee: Surface Technology Inc
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Filing: 1990-04-16
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Granted: 1991-03-05
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Expires: 2010-04-16
Abstract
Abstract A process of electrolessly metallizing a body on the surface thereof with a metal coating incorporating particulate matter therein, which process comprises contacting the surface of said body with a stable electroless metallizing bath comprising a metal salt, an electroless reducing agent, a complexing agent, an electroless plating stabilizer, a quantity of particulate matter which is essentially insoluble or sparingly soluble in the metallizing bath, and a particulate matter stabilizer (PMS), and maintaining said particulate matter in suspension in said metallizing bath during the metallizing of said body for a time sufficient to produce a metallic coating with said particulate matter dispersed therein.
Inventors
- 👤 Nathan Feldstein
- 👤 Deborah J. Lindsay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 02:27
CPC Classifications
C; C23; C23C; C23C18/00; C23C18/16; C23C18/31
Claims Analysis
Total Claims: 43
Claim 1
Independent Claim
73 words
A process for electrolessly metallizing a body to provide on the surface thereof a metal coating which process comprises contacting the surface of said body with an electroless metallizing bath comprising insoluble particulate matter dispersed therein and a quantity of particulate matter stabilizer, and wherein said particulate matter stabilizer is an admixture of a nonionic compound along with a member selected from the group consisting of anionics, cationics, and amphoterics, and mixtures thereof.
Claim 2
Dependent Claim
73 words
A process for electrolessly metallizing a body to provide on the surface thereof a metal coating which process comprises contacting the surface of said body with an electroless metallizing bath comprising insoluble particulate matter dispersed therein and a quantity of particulate matter stabilizer, and wherein said particulate matter stabilizer is an admixture of a nonionic compound along with a member selected from the group consisting of anionics, cationics, and amphoterics, and mixtures thereof.
Claim 3
Dependent Claim
18 words
The process according to claim 1 wherein said electroless metallizing bath is a composition capable of depositing nickel.
Claim 4
Dependent Claim
15 words
The process according to claim 1 wherein said particulate matter is a wear resistant particle.
Claim 5
Dependent Claim
14 words
The process according to claim 1 wherein said particulate matter is a lubricating particle.
Claim 6
Dependent Claim
85 words
A process of electrolessly metallizing a body to provide on the surface thereof a metal coating which process comprises contacting the surface of said body with an electroless metallizing bath comprising an aqueous solution of a metal salt, an electroless reducing agent therefor, insoluble particulate matter dispersed therein and a quantity of particulate matter stabilizer, and wherein said particulate matter stabilizer is an admixture of a nonionic compound along with a member selected from the group consisting of anionic compounds, amphoteric compounds, and mixtures thereof.
Claim 7
Dependent Claim
85 words
A process of electrolessly metallizing a body to provide on the surface thereof a metal coating which process comprises contacting the surface of said body with an electroless metallizing bath comprising an aqueous solution of a metal salt, an electroless reducing agent therefor, insoluble particulate matter dispersed therein and a quantity of particulate matter stabilizer, and wherein said particulate matter stabilizer is an admixture of a nonionic compound along with a member selected from the group consisting of anionic compounds, amphoteric compounds, and mixtures thereof.
Claim 8
Dependent Claim
18 words
The process according to claim 5 wherein said electroless metallizing bath is a composition capable of depositing nickel.
Claim 9
Dependent Claim
15 words
The process according to claim 5 wherein said particulate matter is a wear resistant particle.
Claim 10
Dependent Claim
14 words
The process according to claim 5 wherein said particulate matter is a lubricating particle.
Claim 11
Dependent Claim
86 words
A process of electrolessly metallizing a body to provide on the surface thereof a metal coating which process comprises the contacting of the surface of said body with an electroless metallizing bath comprising an aqueous solution of a metal salt, an electroless reducing agent therefor, wear-resistant particulate matter dispersed therein, and a quantity of particulate matter stabilizer, said particulate matter stabilizer being an admixture of a nonionic compound along with a member selected from the group consisting of anionic, cationic and amphoteric compounds and mixtures thereof.
Claim 12
Dependent Claim
86 words
A process of electrolessly metallizing a body to provide on the surface thereof a metal coating which process comprises the contacting of the surface of said body with an electroless metallizing bath comprising an aqueous solution of a metal salt, an electroless reducing agent therefor, wear-resistant particulate matter dispersed therein, and a quantity of particulate matter stabilizer, said particulate matter stabilizer being an admixture of a nonionic compound along with a member selected from the group consisting of anionic, cationic and amphoteric compounds and mixtures thereof.
Claim 13
Dependent Claim
18 words
The process according to claim 9 wherein said electroless metallizing bath is a composition capable of depositing nickel.
Claim 14
Dependent Claim
12 words
The process according to claim 9 wherein said stabilizer is a surfactant.
Claim 15
Dependent Claim
19 words
The process according to claim 9 wherein said stabilizer is a nonionic surfactant in combination with a cationic surfactant.
Claim 16
Dependent Claim
65 words
A process of electrolessly metallizing a body to provide on the surface thereof a metal coating which process comprises the contacting of the surface of said body with an electroless metallizing bath comprising an aqueous solution of a metal salt, an electroless reducing agent therefor, wear-resistant particulate matter dispersed therein, and a quantity of particulate matter stabilizer, said particulate matter stabilizer being an amphoteric compound.
Claim 17
Dependent Claim
65 words
A process of electrolessly metallizing a body to provide on the surface thereof a metal coating which process comprises the contacting of the surface of said body with an electroless metallizing bath comprising an aqueous solution of a metal salt, an electroless reducing agent therefor, wear-resistant particulate matter dispersed therein, and a quantity of particulate matter stabilizer, said particulate matter stabilizer being an amphoteric compound.
Claim 18
Dependent Claim
18 words
The process according to claim 13 wherein said electroless metallizing bath is a composition capable of depositing nickel.
Claim 19
Dependent Claim
12 words
The process according to claim 13 wherein said stabilizer is a surfactant.
Claim 20
Dependent Claim
13 words
The process according to claim 13 wherein said wearresistant particulate matter is diamond.
Claim 21
Dependent Claim
104 words
A process of electrolessly metallizing a body to provide on the surface thereof a metal coating which process comprises contacting the surface of said body with an electroless metallizing bath comprising an aqueous solution of metal salt, an electroless reducing agent therefor, insoluble particulate matter dispersed therein, and a quantity of particulate matter stabilizer, and wherein said particulate matter stabilizer is an admixture selected from the group consisting of a nonionic compound and a compound selected from the group consisting of anionic, cationic, and amphoteric compounds, and mixtures thereof, thereby increasing the tolerance of said electroless metallizing bath towards the addition of auxilliary palladium.
Claim 22
Dependent Claim
104 words
A process of electrolessly metallizing a body to provide on the surface thereof a metal coating which process comprises contacting the surface of said body with an electroless metallizing bath comprising an aqueous solution of metal salt, an electroless reducing agent therefor, insoluble particulate matter dispersed therein, and a quantity of particulate matter stabilizer, and wherein said particulate matter stabilizer is an admixture selected from the group consisting of a nonionic compound and a compound selected from the group consisting of anionic, cationic, and amphoteric compounds, and mixtures thereof, thereby increasing the tolerance of said electroless metallizing bath towards the addition of auxilliary palladium.
Claim 23
Dependent Claim
11 words
The process according to claim 17 wherein said metal is nickel.
Claim 24
Dependent Claim
19 words
The process according to claim 17 wherein said particulate matter stabilizer is the admixture of nonionic and cationic surfactants.
Claim 25
Dependent Claim
14 words
The process according to claim 17 wherein said electroless reducing agent is sodium hypophosphite.
Claim 26
Dependent Claim
14 words
The process according to claim 17 wherein said particulate matter is a wear-resistant particle.
Claim 27
Dependent Claim
14 words
The process according to claim 17 wherein said particulate matter is a lubricating particle.
Claim 28
Independent Claim
79 words
A method for improving the stability of an electroless plating bath comprising finely divided insoluble particulate matter comprising the step of adding a particulate matter stabilizer to said electroless plating bath wherein said particulate matter stabilizer comprises the admixture of a nonionic compound along with a compound selected from the group consisting of anionic, cationic, and amphoteric compounds and wherein said electroless plating bath further comprises an aqueous solution of a metal salt and an electroless reducing agent thereof.
Claim 29
Independent Claim
79 words
A method for improving the stability of an electroless plating bath comprising finely divided insoluble particulate matter comprising the step of adding a particulate matter stabilizer to said electroless plating bath wherein said particulate matter stabilizer comprises the admixture of a nonionic compound along with a compound selected from the group consisting of anionic, cationic, and amphoteric compounds and wherein said electroless plating bath further comprises an aqueous solution of a metal salt and an electroless reducing agent thereof.
Claim 30
Dependent Claim
18 words
The process according to claim 23 wherein said electroless metallizing bath is a composition capable of depositing nickel.
Claim 31
Dependent Claim
15 words
The process according to claim 23 wherein said particulate matter is a wear resistant particle.
Claim 32
Dependent Claim
14 words
The process according to claim 23 wherein said particulate matter is a lubricating particle.
Claim 33
Dependent Claim
12 words
The process according to claim 23 wherein said stabilizer is a surfactant.
Claim 34
Dependent Claim
12 words
The process according to claim 23 wherein said stabilizer is a dispersant.
Claim 35
Dependent Claim
14 words
The process according to claim 1 wherein said particulate matter stabilizer is a surfactant.
Claim 36
Dependent Claim
19 words
The process according to claim 1 wherein said stabilizer is a non-ionic surfactant in combination with a cationic surfactant.
Claim 37
Dependent Claim
12 words
The process according to claim 1 wherein said stabilizer is a dispersant.
Claim 38
Dependent Claim
12 words
The process according to claim 5 wherein said stabilizer is a surfactant.
Claim 39
Dependent Claim
18 words
The process according to claim 5 wherein said stabilizer is a non-ionic surfactant in combination with cationic surfactant.
Claim 40
Dependent Claim
12 words
The process according to claim 5 wherein said stabilizer is a dispersant.
Claim 41
Dependent Claim
12 words
The process according to claim 9 wherein said stabilizer is a surfactant.
Claim 42
Dependent Claim
12 words
The process according to claim 9 wherein said stabilizer is a disperant.
Claim 43
Dependent Claim
19 words
The process according to claim 13 wherein said stabilizer is a non-ionic surfactant in combination with a cationic surfactant.
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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) | 1994-03-04 | 1994-09-03 | 1995-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-03-04 | 1998-09-03 | 1999-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-03-04 | 2002-09-03 | 2003-03-05 | $7700.00 | Window Closed / Lapsed |