US3629922A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal plating of plastics
Assignee: Hooker Chemical Corp
•
Filing: 1967-03-23
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Granted: 1971-12-28
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Expires: 1987-03-23
Abstract
Abstract Plastics, particularly nylon, poly(haloethylene), and phenolic resins are plated with metals by pretreatment of the plastic surface with a phosphorus compound such as trihydroxymethyl phosphine in a solvent, followed by contacting the treated surface with a metal salt or complex thereof. The resulting treated surface is either conductive or is capable of catalyzing the reduction of a metal salt to produce a conductive surface. Such conductive surfaces are readily electroplated by conventional techniques.
Inventors
- 👤 George T Miller
- 👤 Arabinda N Dey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:19
CPC Classifications
C; C23; C23C; C23C18/00; C23C18/16; C23C18/18; C23C18/20; C23C18/28; C23C18/30; C23C18/2006; C23C18/2046; C23C18/2053; C23C18/2066; C23C18/2073; C23C18/2086; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9335; Y10S428/934; Y10S428/935; Y10S428/936; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12535; Y10T428/12556; Y10T428/12569; Y10T428/12771; Y10T428/12778; Y10T428/31504; Y10T428/3154; Y10T428/31544; Y10T428/31678; Y10T428/31681; Y10T428/31688
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
19 words
The process of claim 1 wherein the trihydroxymethyl phosphine is dissolved in a mixture of polar and nonpolar solvents.
Claim 2
Dependent Claim
19 words
The process of claim 2 wherein the trihydroxymethyl phosphine is dissolved in a mixture of benzene and ethyl alcohol.
Claim 3
Dependent Claim
17 words
The process of claim 2 wherein the metal salt complex is an ammoniacal complex of silver nitrate.
Claim 4
Dependent Claim
31 words
The process wherein a treated polymer surface resulting from the process of claim 1 is subjected to electroless metal plating to deposit an electroless conductive coating on the treated polymer surface.
Claim 5
Dependent Claim
65 words
A process which comprises contacting a polymer with a solution of trihydroxymethyl phosphine, and thereafter subjecting the treated surface to an electroless metal plating process to deposit an electroless conductive coating on the treated polymer surface, wherein said polymer is a long chain synthetic polymeric amide containing recurring carbonamide groups as an integral part of the main polymer chain, a poly(haloethylene) or a phenolic resin.
Claim 6
Dependent Claim
19 words
The process of claim 6 wherein the trihydroxymethyl phosphine is dissolved in a mixture of polar and nonpolar solvents.
Claim 7
Dependent Claim
19 words
The process of claim 7 wherein the trihydroxymethyl phosphine is dissolved in a mixture of benzene and methyl alcohol.
Claim 8
Dependent Claim
26 words
The process of claim 1 wherein the polymer is contacted with nitric acid prior to the step of contacting the polymer surface with the phosphorus compound.
Claim 9
Dependent Claim
27 words
A process wherein a treated polymer surface resulting from the process of claim 1 is electroplated to deposit an adherent metal coating on the treated polymer surface.
Claim 10
Dependent Claim
27 words
A process wherein a coated polymer surface resulting from the process of claim 5 is electroplated to deposit an adherent metal coating on the coated polymer surface.
Claim 11
Dependent Claim
27 words
A process wherein a coated polymer surface resulting from the process of claim 6 is electroplated to deposit an adherent metal coating on the coated polymer surface.
Claim 12
Dependent Claim
87 words
A polymer article having a treated surface produced by a process which comprises contacting said article with a solution of trihydroxymethyl phosphine, and thereafter contacting the resulting treated article with a solution of a metal salt or complex thereof, wherein said metal is selected from Groups IB, IIB, IVB, VB, VIB, VIIB and VIII of the Periodic Table, wherein said polymer is a long chain synthetic polymeric amide containing recurring carbonamide groups as an integral part of the main polymer chain, a poly(haloethylene) or a phenolic resin.
Claim 13
Dependent Claim
20 words
The polymer article of claim 13 having an adherent electroless conductive coating deposited on the treated surface of the article.
Claim 14
Dependent Claim
28 words
The article of claim 13 wherein the polymer is a long chain synthetic polymeric amide containing recurring carbonamide groups as an integral part of the main polymer chain.
Claim 15
Dependent Claim
11 words
The article of claim 13 wherein the polymer is a poly(haloethylene).
Claim 16
Dependent Claim
10 words
The article of claim 16 wherein the poly(haloethylene) is poly(monochlorotrifluoroethylene).
Claim 17
Dependent Claim
12 words
The article of claim 13 wherein the polymer is a phenolic resin.
Claim 18
Dependent Claim
13 words
The article of claim 18 wherein the phenolic resin is a phenolformaldehyde resin.
Claim 19
Dependent Claim
76 words
A polymer article having an adherent metallic coating produced by a process which comprises contacting said article with a solution of trihydroxymethyl phosphine, and thereafter subjecting the treated polymer surface to an electroless metal plating process to deposit an electroless conductive coating on the treated polymer surface, wherein said polymer is a long chain synthetic polymeric amide containing recurring carbonamide groups as an integral part of the main polymer chain, a poly(haloethylene) or a phenolic resin.
Claim 20
Dependent Claim
28 words
The article of claim 20 wherein the polymer is a long chain synthetic polymeric amide containing recurring carbonamide groups as an integral part of the main polymer chain.
Claim 21
Dependent Claim
11 words
The article of claim 20 wherein the polymer is a poly(haloethylene).
Claim 22
Dependent Claim
10 words
The article of claim 22 wherein the poly(haloethylene) is poly(monochlorotrifluoroethylene).
Claim 23
Dependent Claim
12 words
The article of claim 20 wherein the polymer is a phenolic resin.
Claim 24
Dependent Claim
13 words
The article of claim 24 wherein the phenolic resin is a phenolformaldehyde resin.
Claim 25
Dependent Claim
16 words
The article of claim 13 having an adherent metal coating electrolytically deposited on the treated surface.
Claim 26
Dependent Claim
17 words
The article of claim 14 having an adherent metal coating electrolytically deposited on the electroless conductive coating.
Claim 27
Dependent Claim
17 words
The article of claim 20 having an adherent metal coating electrolytically deposited on the electroless conductive coating.
References Cited (Backward Citations)
US3035944A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-12-27 | 1975-06-28 | 1975-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-27 | 1979-06-28 | 1979-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-27 | 1983-06-28 | 1983-12-28 | $7700.00 | Window Closed / Lapsed |