US4525422A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adhesion primers for encapsulating epoxies
Assignee: Olin Corp
•
Filing: 1982-11-22
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Granted: 1985-06-25
•
Expires: 2002-11-22
Abstract
Abstract A copper plastic laminate is provided having a high bond strength. The copper is selected from the group consisting of copper and copper alloys and has on its surface a uniform glassy-like, substantially pore-free coating of copper phosphate. A plastic encapsulating material containing a mold release agent is adhesively bonded to the copper.
Inventors
- 👤 Sheldon H. Butt
- 👤 Edward F. Smith, III
- 👤 F. Dennis Gyurina
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:38
CPC Classifications
H; H10; H10W; H10W74/00; H10W74/40; H10W74/47; H05; H05K; H05K3/00; H05K3/38; H05K3/382; H05K3/385; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31511; Y10T428/31529; Y10T428/31678; Y10T428/31692
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
76 words
A metal plastic composite having improved bond strength, said metal being selected from the group consisting essentially of copper and copper alloys; an adhesion primer on the surface of the copper or copper alloy, said adhesion primer comprising a glass-like, substantially pore-free phosphate coating; and the plastic of said composite comprising an epoxy resin adhesively bonded to the surface of said copper or copper alloy having said adhesion primer, said epoxy containing a mold release agent.
Claim 2
Dependent Claim
76 words
A metal plastic composite having improved bond strength, said metal being selected from the group consisting essentially of copper and copper alloys; an adhesion primer on the surface of the copper or copper alloy, said adhesion primer comprising a glass-like, substantially pore-free phosphate coating; and the plastic of said composite comprising an epoxy resin adhesively bonded to the surface of said copper or copper alloy having said adhesion primer, said epoxy containing a mold release agent.
Claim 3
Dependent Claim
21 words
The composite as in claim 1 wherein said plastic comprises an epoxy resin further containing inert fillers to provide dimensional stability.
Claim 4
Dependent Claim
16 words
The composite as in claim 2 wherein said mold release agent comprises low melting temperature organics.
Claim 5
Dependent Claim
23 words
The composite as in claim 3 wherein said mold release agent is selected from the group consisting of silicones, stearates, and fatty acids.
Claim 6
Dependent Claim
19 words
The composite as in claim 4 wherein said plastic comprises an epoxy resin formulated as a thermosetting encapsulating epoxy.
Claim 7
Dependent Claim
19 words
The composite as in claim 1 wherein said plastic comprises an epoxy resin formulated as a thermosetting encapsulating epoxy.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-06-24 | 1988-12-24 | 1989-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-06-24 | 1992-12-24 | 1993-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-06-24 | 1996-12-24 | 1997-06-25 | $7700.00 | Window Closed / Lapsed |