US4517254A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adhesive metallization of polyimide
Assignee: Atotech Deutschland GmbH and Co KG
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Filing: 1982-12-13
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Granted: 1985-05-14
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Expires: 2002-12-13
Abstract
Abstract A process for the adhesive metallization of polyimide through pretreating of the polyimide and subsequent activation, as well as chemical metallization, if necessary, followed by galvanic metal deposition, characterized in that the polyimide is pretreated with an aqueous solution of alkali hydroxide and an organic nitrogen compound such as one selected from the group consisting of N,N,N', N'-tetra-(2-hydroxypropyl)-ethylenediamine, ethylenediaminetetraacetic acid and nitrilotriacetic acid. The plastics metallized according to the present invention find use as shaped parts, preferably in the fields of electrical engineering and electronics.
Inventors
- 👤 Joachim Grapentin
- 👤 Hartmut Mahlkow
- 👤 Jurgen Skupsch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:20
CPC Classifications
C; C23; C23C; C23C18/00; C23C18/16; C23C18/18; C23C18/20; C23C18/22; H; H05; H05K; H05K3/00; H05K3/38; H05K3/381; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9335; Y10S428/936; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12535; Y10T428/12556; Y10T428/12569; Y10T428/12771; Y10T428/12861; Y10T428/12903; Y10T428/1291; Y10T428/31504; Y10T428/31721
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
59 words
In a process for the adhesive metallization of polyimide through pretreatment of the polyimide and subsequent activation as well as chemical metallizing followed, if necessary, by galvanic metal deposition, the improvement comprising pretreating the polyimide with an aqueous solution of alkali hydroxide and an organic nitrogen compound selected from the group consisting of N,N,N',N'-tetra-(2-hydroxypropyl)-ethylenediamine, ethylenediaminetetraacetic acid and nitrilotriacetic acid.
Claim 2
Dependent Claim
59 words
In a process for the adhesive metallization of polyimide through pretreatment of the polyimide and subsequent activation as well as chemical metallizing followed, if necessary, by galvanic metal deposition, the improvement comprising pretreating the polyimide with an aqueous solution of alkali hydroxide and an organic nitrogen compound selected from the group consisting of N,N,N',N'-tetra-(2-hydroxypropyl)-ethylenediamine, ethylenediaminetetraacetic acid and nitrilotriacetic acid.
Claim 3
Dependent Claim
20 words
Process according to claim 1, wherein said solution contains as the alkali hydroxide, lithium hydroxide, sodium hydroxide and/or potassium hydroxide.
Claim 4
Dependent Claim
15 words
Process according to claim 1, wherein said solution contains 5 to 600 g/liter alkali hydroxide.
Claim 5
Dependent Claim
13 words
Process according to claim 1, wherein said solution contains 50 g/liter alkali hydroxide.
Claim 6
Dependent Claim
18 words
Process according to claim 1, wherein said solution contains 5 to 30 g/liter of the organic nitrogen compound.
Claim 7
Dependent Claim
16 words
Process according to claim 1, wherein said solution contains 20 g/liter of the organic nitrogen compound.
Claim 8
Dependent Claim
17 words
Process according to claim 1, wherein said pretreating is performed at temperatures from 15° to 30° C.
Claim 9
Dependent Claim
13 words
Process according to claim 1, wherein said pretreating is performed at 20° C.
Claim 10
Dependent Claim
16 words
Process according to claim 1, wherein said activation is performed by means of a palladium-containing activator.
Claim 11
Dependent Claim
18 words
Process according to claim 1, wherein said polyimide, after said pretreating and activation, is chemically coppered or nickelled.
Claim 12
Dependent Claim
21 words
Process according to claim 1, wherein said polyimide, after said pretreating and chemical metallizing, is heated to 70° to 140° C.
Claim 13
Dependent Claim
20 words
Process according to claim 1, wherein said polyimide, after said pretreating and said chemical metallizing, is heated to 130° C.
Claim 14
Dependent Claim
11 words
Polyimide-metal composite material, produced according to the process of claim 1.
Claim 15
Dependent Claim
11 words
Polyimide-copper composite material, produced according to the process 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) | 1988-05-13 | 1988-11-12 | 1989-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-05-13 | 1992-11-12 | 1993-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-05-13 | 1996-11-12 | 1997-05-14 | $7700.00 | Window Closed / Lapsed |