US4248632A
Expired / Lapsed
US
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Solution and process for the activation of surfaces for metallization
Assignee: Bayer Pharma AG
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Filing: 1979-02-13
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Granted: 1981-02-03
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Expires: 1999-02-13
Abstract
Abstract An activating agent for application to the unactivated surface of an organic polymer to prepare the surface for chemical metallization comprises an aqueous solution of (a) a water soluble metal salt of an inorganic acid, the metal being silver, gold, or a platinum group metal, and (b) an amount of a ligand-forming organic nitrogen compound sufficient to form a water soluble coordination complex with the metal salt, the solution having a pH between 2.2 and 7, the metal concentration being between about 0.1 and about 1 gram per liter.
Inventors
- 👤 Hans J. Ehrich
- 👤 Wolfgang Clauss
- 👤 Hartmut Mahlkow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:40
CPC Classifications
C; C23; C23C; C23C18/00; C23C18/16; C23C18/18; C23C18/20; C23C18/28; C07; C07F; C07F17/00; C23C18/2006; C23C18/2046; C23C18/2073; C23C18/208; C23C18/30
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
61 words
An activating composition for preparing unactivated surfaces having a base of acrylonitrile-butadiene-styene-polymers, polypropylene, epoxide or glass-fiber-reinforced epoxide for chemical metallization, comprising an aqueous solution having a pH of between about 2.2 and 7 of a compound selected from the group consisting of dichloro-bis-(2-aminopyridine)-palladium-(II) and dichloro-tetrakis-(2-aminopyridine)-palladium-(II), wherein the concentration of palladium metal in said solution is between about 0.05 and 1 g/l.
Claim 2
Dependent Claim
61 words
An activating composition for preparing unactivated surfaces having a base of acrylonitrile-butadiene-styene-polymers, polypropylene, epoxide or glass-fiber-reinforced epoxide for chemical metallization, comprising an aqueous solution having a pH of between about 2.2 and 7 of a compound selected from the group consisting of dichloro-bis-(2-aminopyridine)-palladium-(II) and dichloro-tetrakis-(2-aminopyridine)-palladium-(II), wherein the concentration of palladium metal in said solution is between about 0.05 and 1 g/l.
Claim 3
Dependent Claim
38 words
A method for activating the unactivated surface of a synthetic organic polymer for chemical metallization, comprising applying to said surface which has not been chemically pretreated or previously activated an effective amount of the composition of claim 1.
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) | 1984-02-03 | 1984-08-04 | 1985-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-02-03 | 1988-08-04 | 1989-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-02-03 | 1992-08-04 | 1993-02-03 | $7700.00 | Window Closed / Lapsed |