US4181759A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for metal deposition of a non-conductor substrate
Assignee: Individual
•
Filing: 1977-07-20
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Granted: 1980-01-01
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Expires: 1997-07-20
Abstract
Abstract A process for the preparation of non-conductors prior to electroless metal plating with a catalyst composition. The catalyst formulation comprises the product resulting from the admixture of an acid, a nucleophilic reactant, stannous ions, an hydrolyzable stannic compound, and precious metal ions. The stannous ions are in a molar excess relative to either the stannic compound or the precious metal ions.
Inventors
- 👤 Nathan Feldstein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 16:56
CPC Classifications
C; C23; C23C; C23C18/00; C23C18/16; C23C18/18; C23C18/20; C23C18/28
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
131 words
A process for the catalytic preparation of non-conductor substrate prior to electroless metal deposition comprised of the step of contacting said substrate with a catalytic colloidal composition prepared by (a) admixing 1. stannous ions in a molar concentration excess to precious metal ions and in a molar concentration excess to readily hydrolyzable stannic ions, with 2. precious metal ions, and 3. a readily hydrolyzable stannic compound which upon heating results in the conversion of the stannic ions to colloidal aged tin(IV) which imparts a colloidal nature to said composition and further wherein the readily hydrolyzable stannic compound is derived from an extraneous source, and 4. an acid, and (b) exposing said admixture to thermal energy whereby converting the stannic ions in said readily hydrolyzable stannic compound to said colloidal aged tin(IV).
Claim 2
Dependent Claim
131 words
A process for the catalytic preparation of non-conductor substrate prior to electroless metal deposition comprised of the step of contacting said substrate with a catalytic colloidal composition prepared by (a) admixing 1. stannous ions in a molar concentration excess to precious metal ions and in a molar concentration excess to readily hydrolyzable stannic ions, with 2. precious metal ions, and 3. a readily hydrolyzable stannic compound which upon heating results in the conversion of the stannic ions to colloidal aged tin(IV) which imparts a colloidal nature to said composition and further wherein the readily hydrolyzable stannic compound is derived from an extraneous source, and 4. an acid, and (b) exposing said admixture to thermal energy whereby converting the stannic ions in said readily hydrolyzable stannic compound to said colloidal aged tin(IV).
Claim 3
Dependent Claim
15 words
The process according to claim 1 wherein said catalytic composition further contains a nucleophilic reactant.
Claim 4
Dependent Claim
19 words
The process according to claim 2 wherein said nucleophilic reactant is selected from the group comprising chlorides and bromides.
Claim 5
Dependent Claim
14 words
The process according to claim 1 wherein said electroless metal deposition is of copper.
Claim 6
Dependent Claim
15 words
The process according to claim 1 wherein said said electroless metal deposition is of nickel.
Claim 7
Dependent Claim
16 words
The process according to claim 1 wherein said readily hydrolyzable stannic compound is hydrated stannic chloride.
Claim 8
Dependent Claim
11 words
The process according to claim 1 wherein said non-conductor is ABS.
Claim 9
Dependent Claim
19 words
The process according to claim 1 wherein said catalytic composition further contains a reducing agent in an inactive state.
Claim 10
Dependent Claim
15 words
The process according to claim 1 wherein said catalytic composition further contains an anionic surfactant.
Claim 11
Dependent Claim
130 words
A process for the catalytic preparation of non-conductor substrates prior to electroless metal deposition comprised of the step contacting said substrate with a colloidal catalytic composition prepared by a. admixing 1. stannous ions in a molar excess to a catalystic metal's ions and also in a molar excess to readily hydrolyzable stannic ions, with 2. catalytic metal ions wherein said metal ions are of metals capable of electroless plating initiation, and 3. a readily hydrolyzable stannic compound is derived from an extraneous source which is capable of forming a colloidal composition resulting from the conversion of tin(IV) to aged tin(IV), and 4. an acid, and then b. exposing said mixture to thermal energy, thereby converting the readily hydrolyzable stannic ions of the stannic compound to a colloid bearing stannic ions.
Claim 12
Dependent Claim
130 words
A process for the catalytic preparation of non-conductor substrates prior to electroless metal deposition comprised of the step contacting said substrate with a colloidal catalytic composition prepared by a. admixing 1. stannous ions in a molar excess to a catalystic metal's ions and also in a molar excess to readily hydrolyzable stannic ions, with 2. catalytic metal ions wherein said metal ions are of metals capable of electroless plating initiation, and 3. a readily hydrolyzable stannic compound is derived from an extraneous source which is capable of forming a colloidal composition resulting from the conversion of tin(IV) to aged tin(IV), and 4. an acid, and then b. exposing said mixture to thermal energy, thereby converting the readily hydrolyzable stannic ions of the stannic compound to a colloid bearing stannic ions.
Claim 13
Dependent Claim
16 words
The process according to claim 10 wherein said readily hydrolyzable stannic compound is hydrated stannic chloride.
Claim 14
Dependent Claim
14 words
The process according to claim 10 wherein said electroless metal deposition is of copper.
Claim 15
Dependent Claim
14 words
The process according to claim 10 wherein said electroless metal deposition is of nickel.
Claim 16
Dependent Claim
11 words
The process according to claim 10 wherein said non-conductor is ABS.
Claim 17
Dependent Claim
12 words
The process according to claim 10 wherein said catalytic metal is copper.
Claim 18
Dependent Claim
19 words
The process according to claim 10 wherein said catalytic composition further contains a reducing agent in an inactive state.
Claim 19
Dependent Claim
15 words
The process according to claim 10 wherein said catalytic composition further contains an anionic 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) | 1982-12-31 | 1983-07-02 | 1984-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-12-31 | 1987-07-02 | 1988-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-12-31 | 1991-07-02 | 1992-01-01 | $7700.00 | Window Closed / Lapsed |