US3650911A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metallizing substrates
Assignee: Hooker Chemical Corp
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Filing: 1968-08-06
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Granted: 1972-03-21
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Expires: 1988-08-06
Abstract
Abstract Substrates particularly thermoplastic resins and polymers, are plated with metals by pre-treatment of the substrate with a metallic coating by contacting said substrate with a basic solution of a metal salt to which is being introduced continuously or portionwise a phosphorus compound wherein the phosphorus has an oxidation number of less than 5. The resulting treated surface is conductive. Such conductive surfaces are readily electroplated by conventional techniques.
Inventors
- 👤 Kingso Chingtsung Lin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:07
CPC Classifications
C; C23; C23C; C23C18/00; C23C18/16; C23C18/31; C23C18/32; C23C18/34; C23C18/18; C23C18/20; C23C18/28
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
70 words
A process which comprises forming a metallic coating at the surface of a substantially non-metallic substrate by intimately contacting the substrate with a basic, aqueous solution of a metal salt or complex thereof, which solution also contains a phosphorus compound wherein the phosphorus has an oxidation number of less than 5, wherein the metal is selected from groups IB, IIB, IVB, VB, VIB, VIIB and VIII of the periodic table.
Claim 2
Dependent Claim
123 words
A process which comprises forming a metallic coating at the surface of a substantially non-metallic substrate by contacting the substrate with a basic, aqueous solution of a metal salt or complex thereof, and simultaneously agitating the solution and introducing therein continuously or portionwise a phosphorus component, wherein the metal is selected from groups IB, IIB, IVB, VB, VIB, VIIB and VIII of the periodic table, and wherein the phosphorus component is selected from the group consisting of elemental phosphorus, phosphine, diphosphine, hypophosphorous acid and the salts thereof of the metals of groups I, II and IIIA, phosphorous acid and the salts thereof of the metals of groups I, II and IIIA, and the phosphides of the metals of groups IA, IIA and IIIA.
Claim 3
Dependent Claim
11 words
The process of claim 3 wherein the phosphorus component is phosphine.
Claim 4
Dependent Claim
12 words
The process of claim 3 wherein the phosphorus component is sodium hypophosphite.
Claim 5
Dependent Claim
18 words
The process of claim 3 wherein the metal salt complex is an ammoniacal complex of a nickel salt.
Claim 6
Dependent Claim
12 words
The precess of claim 6 wherein the nickel salt is nickel chloride.
Claim 7
Dependent Claim
29 words
The precess wherein the treated substrate resulting from the process of claim 1 is subjected to electroless metal plating to deposit an electroless conductive coating on the treated substrate.
Claim 8
Dependent Claim
25 words
A process wherein the substrate resulting from the process of claim 8 is electroplated to deposit an adherent metal coating on the electroless conductive coating.
Claim 9
Dependent Claim
25 words
A process wherein the treated substrate resulting from the process of claim 1 is electroplated to deposit an adherent metal coating on the treated substrate.
Claim 10
Dependent Claim
11 words
The precess of claim 1 wherein the substrate is a plastic.
Claim 11
Dependent Claim
10 words
The process of claim 3 wherein the substrate is polypropylene.
Claim 12
Dependent Claim
17 words
The process of claim 3 wherein the substrate is a graft copolymer of polybutadiene, styrene and acrylonitrile.
Claim 13
Dependent Claim
11 words
The process of claim 3 wherein the substrate is a polycarbonate.
Claim 14
Dependent Claim
10 words
The process of claim 3 wherein the substrate is polytetrafluoroethylene.
Claim 15
Dependent Claim
10 words
The process of claim 3 wherein the substrate is glass.
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) | 1975-03-21 | 1975-09-20 | 1976-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-03-21 | 1979-09-20 | 1980-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-03-21 | 1983-09-20 | 1984-03-21 | $7700.00 | Window Closed / Lapsed |