US3963590A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for electroplating polyoxymethylene
Assignee: EIDP Inc
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Filing: 1975-02-25
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Granted: 1976-06-15
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Expires: 1995-02-25
Abstract
Abstract An improved process for electroplating polyoxymethylene is provided wherein a shaped article of polyoxymethylene is treated with quinoline or gamma -butyrolactone preferably by immersion techniques prior to subjecting the shaped article to surface treatment with an acid etching agent.
Inventors
- 👤 Edward Johnson Deyrup
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:39
CPC Classifications
C; C23; C23C; C23C18/00; C23C18/16; C23C18/18; C23C18/20; C23C18/2006; C23C18/2026; C23C18/2033; C23C18/2046; C23C18/2073; C23C18/208; H; H05; H05K; H05K1/00; H05K1/02; H05K1/03; H05K1/0313; H05K1/032; H05K1/0326; H05K3/00; H05K3/10; H05K3/18; H05K3/181; H05K3/38; H05K3/381; Y; Y10; Y10S; Y10S205/00; Y10S205/917; Y10S205/924; Y10S428/00; Y10S428/922; Y10S428/9335; Y10S428/934; Y10S428/935; Y10S428/936; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678; Y10T428/31688; Y10T428/31692; Y10T428/31696
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
86 words
In a process for electroplating a shaped article of polyoxymethylene by the sequential steps of etching the surface of said article with an acid etchant, neutralizing the etched surface of said article with a base solution, treating said article with a catalyst for electroless deposition, depositing by electroless plating a metal coating on said article, and depositing by electroplating a metal coating on said article, the improvement which comprises contacting said article with a liquid comprising quinoline or γ-butyrolactone before etching the surface of said article.
Claim 2
Dependent Claim
86 words
In a process for electroplating a shaped article of polyoxymethylene by the sequential steps of etching the surface of said article with an acid etchant, neutralizing the etched surface of said article with a base solution, treating said article with a catalyst for electroless deposition, depositing by electroless plating a metal coating on said article, and depositing by electroplating a metal coating on said article, the improvement which comprises contacting said article with a liquid comprising quinoline or γ-butyrolactone before etching the surface of said article.
Claim 3
Dependent Claim
21 words
The process of claim 1 wherein said liquid comprises quinoline or γ-butyrolactone and up to about 75% by volume of water.
References Cited (Backward Citations)
US3554880A
Cited
US3533828A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-06-15 | 1979-12-15 | 1980-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-15 | 1983-12-15 | 1984-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-15 | 1987-12-15 | 1988-06-15 | $7700.00 | Window Closed / Lapsed |