US4714653A
Expired / Lapsed
US
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Metallizable substrate composites and printed circuits produced therefrom
Assignee: BASF Corp
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Filing: 1987-02-02
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Granted: 1987-12-22
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Expires: 2007-02-02
Abstract
Abstract Substrate composites, well adopted for the production of metallized printed circuits and facilely prepared by, e.g., papermaking procedures, include a central core layer comprising fibrous cellulosic material or flaked mica within a matrix of a thermosetting resin binder, said central core element having coextensively laminated to at least one of the face surfaces thereof, a lamina of a thermosetting resin comprising non-conductive metal oxide filler material distributed therethrough, and said metal oxide being borohydride reduceable and reactive to form unstable metal hydride intermediates.
Inventors
- 👤 Robert Cassat
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:14
CPC Classifications
H; H05; H05K; H05K3/00; H05K3/10; H05K3/18; H05K3/188; H05K1/00; H05K1/02; H05K1/03; H05K1/0313; H05K1/0353; H05K1/0373; H05K3/38; H05K3/386; H05K3/387; H05K2201/00; H05K2201/02; H05K2201/0203; H05K2201/0206; H05K2201/0209; H05K2201/0236; H05K2201/0242; H05K2201/0245; H05K2201/0275; H05K2201/0284; H05K2201/0293; H05K2203/00; H05K2203/11; H05K2203/1157; H05K2203/12; H05K2203/125; H05K3/105; Y; Y10; Y10S; Y10S428/00; Y10S428/901; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/24917; Y10T428/25; Y10T428/256
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
80 words
A substrate composite, including a central core layer comprising fibrous cellulosic material or flaked mica within a matrix of a thermosetting resin binder, said central core element having coextensively laminated to at least one of the face surfaces thereof, a lamina of a thermosetting resin comprising a particulate array of non-conductive metal oxide filler material distributed therethrough, at least a portion of said metal oxide being borohydride reduced to form unstable metal hydride intermediates into the depth of said lamina.
Claim 2
Dependent Claim
80 words
A substrate composite, including a central core layer comprising fibrous cellulosic material or flaked mica within a matrix of a thermosetting resin binder, said central core element having coextensively laminated to at least one of the face surfaces thereof, a lamina of a thermosetting resin comprising a particulate array of non-conductive metal oxide filler material distributed therethrough, at least a portion of said metal oxide being borohydride reduced to form unstable metal hydride intermediates into the depth of said lamina.
Claim 3
Dependent Claim
26 words
The substrate composite as defined by claim 1, said central core layer essentially consisting of fibrous cellulosic material with a matrix of a thermosetting resin binder.
Claim 4
Dependent Claim
19 words
The substrate composite as defined by claim 2, said central core layer further comprising inert filler material distributed therethrough.
Claim 5
Dependent Claim
25 words
The substrate composite as defined by claim 1, said central core layer essentially consisting of flaked mica within a matrix of a thermosetting resin binder.
Claim 6
Dependent Claim
19 words
The substrate composite as defined by claim 4, said central core layer further comprising inert filler material distributed therethrough.
Claim 7
Dependent Claim
19 words
The substrate composite as defined by claim 1, said central core layer further comprising inert filler material distributed therethrough.
Claim 8
Dependent Claim
22 words
The substrate composite as defined by claim 1, wherein said thermosetting resin binder comprising said central core layer comprises a phenolic resin.
Claim 9
Dependent Claim
25 words
The substrate composite as defined by claim 1, wherein said at least one thermosetting resin lamina comprises a phenolic resin, epoxide resin, or imido resin.
Claim 10
Dependent Claim
23 words
The substrate composite as defined by claim 8, wherein said at least one thermosetting resin lamina comprises the polymer of an imido prepolymer.
Claim 11
Dependent Claim
21 words
The substrate composite as defined by claim 1, wherein said at least one thermosetting resin lamina comprises porous cellulosic reinforcing means.
Claim 12
Dependent Claim
15 words
The substrate composite as defined by claim 1, said non-conductive metal oxide comprising cuprous oxide.
Claim 13
Dependent Claim
22 words
The substrate composite as defined by claim 1, said central core layer comprising from 50 to 90% of the total weight thereof.
Claim 14
Dependent Claim
22 words
The substrate composite as defined by claim 12, said central core layer having a thickness ranging from about 1 to 3 mm.
Claim 15
Dependent Claim
27 words
The substrate composite as defined by claim 12, said central core layer comprising from 40 to 70% by weight of said fibrous cellulosic material or flaked mica.
Claim 16
Dependent Claim
27 words
The substrate composite as defined by claim 1, wherein said at least one thermosetting resin lamina comprises from 30 to 70% by weight of particulate metal oxide.
Claim 17
Dependent Claim
21 words
The substrate composite as defined by claim 1, said at least one thermosetting resin lamina further comprising a filler material therefor.
Claim 18
Dependent Claim
34 words
The substrate composite as defined by claim 1, wherein a fraction of the metal oxide filler material comprising said at least one thermosetting resin lamina is physically exposed at the outer face surface thereof.
Claim 19
Dependent Claim
26 words
The substrate composite as defined by claim 1, said at least a portion of said metal oxide filler material having been further reduced to free metal.
Claim 20
Dependent Claim
22 words
The substrate composite as defined by claim 18, further comprising an additive metallic overlayer confronting said at least one thermosetting resin lamina.
Claim 21
Dependent Claim
16 words
The substrate composite as defined by claim 19, wherein said thermosetting resins are in hardened state.
Claim 22
Dependent Claim
12 words
A printed circuit comprising the substrate composite as defined by claim 20.
Claim 23
Dependent Claim
16 words
The substrate composite as defined by claim 18, wherein said thermosetting resins are in hardened state.
Claim 24
Dependent Claim
12 words
A printed circuit comprising the substrate composite as defined by claim 22.
Claim 25
Dependent Claim
16 words
The substrate composite as defined by claim 1, wherein said thermosetting resins are in hardened state.
Claim 26
Dependent Claim
12 words
A printed circuit comprising the substrate composite as defined by claim 24.
Claim 27
Dependent Claim
15 words
A rigid or semi-rigid shaped article comprising the substrate composite as defined by claim 24.
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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) | 1990-12-21 | 1991-06-22 | 1991-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-12-21 | 1995-06-22 | 1995-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-12-21 | 1999-06-22 | 1999-12-22 | $7700.00 | Window Closed / Lapsed |