US4916016A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal or plastic-clad polyvinyl resin laminates
Assignee: Zeneca Inc
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Filing: 1987-02-18
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Granted: 1990-04-10
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Expires: 2007-02-18
Abstract
Abstract A metal foil or plastic film clad reinforced resin susbstrate which is made by the process of injection molding a polymerizing resin solution under pressure in a closed heated mold cavity having at least one surface covered by a metal foil or plastic film. These laminates are useful as electrical circuit board and EMI/RFI shielding components.
Inventors
- 👤 William W. Bristowe
- 👤 Hong C. Kim
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:53
CPC Classifications
H; H05; H05K; H05K9/00; H05K9/0073; H05K9/0081; H05K9/0084; B; B29; B29C; B29C67/00; B29C67/24; B29C67/246; B29C70/00; B29C70/04; B29C70/06; B29C70/08; B29C70/086; B29C70/088; B29C70/68; B29C70/78; H05K1/00; H05K1/02; H05K1/03; H05K1/0313; H05K1/032; H05K1/0326; H05K3/00; H05K3/02; H05K3/022; B29K; B29K2105/00; B29K2105/0002; B29K2105/0058; B29K2105/0073; B29L; B29L2031/00; B29L2031/30; B29L2031/3055; B29L2031/3061; B29L2031/34; B29L2031/3425; H05K1/0353; H05K1/0366; H05K2201/00; H05K2201/09; H05K2201/09009; H05K2201/09118; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31507; Y10T428/31511; Y10T428/31529; Y10T428/31551; Y10T428/31562; Y10T428/31565; Y10T428/31573; Y10T428/3158; Y10T428/31594; Y10T428/31678; Y10T428/31681; Y10T428/31692; Y10T428/31699; Y10T428/31721; Y10T428/31725; Y10T428/31736; Y10T428/3175; Y10T428/31786; Y10T428/31797; Y10T428/31855; Y10T428/31909; Y10T428/31913; Y10T428/3192; Y10T428/31928; Y10T428/31935; Y10T428/31942
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
141 words
A metal foil or plastic film-clad laminate having at least one sheet or foil or film directly bonded to a shaped resin when made by the steps comprising: (a) forming an ethylenically unsaturated monomer solution of resins selected from the group consisting of ethylenically unsaturated polyesters, vinylesters, polyesterurethanes, methylmethacrylates, methacrylates, vinylisocyanurates, polyurethanes, polyepoxies, and polymer initiator catalysts to start polymerization, free of internal mold release agents which promote nonadhesion to mold surfaces. (b) immediately injecting said polymerizing solution under pressure into a closed heated mold cavity wherein said mold cavity has at least one surface covered by a metal foil or plastic film, free of agents which promote nonadhesion, (c) permitting said polymerizing solution to cure in said mold against said metal foil or plastic film under pressure, and removing a cured metal foil or plastic film-clad article from said mold.
Claim 2
Dependent Claim
141 words
A metal foil or plastic film-clad laminate having at least one sheet or foil or film directly bonded to a shaped resin when made by the steps comprising: (a) forming an ethylenically unsaturated monomer solution of resins selected from the group consisting of ethylenically unsaturated polyesters, vinylesters, polyesterurethanes, methylmethacrylates, methacrylates, vinylisocyanurates, polyurethanes, polyepoxies, and polymer initiator catalysts to start polymerization, free of internal mold release agents which promote nonadhesion to mold surfaces. (b) immediately injecting said polymerizing solution under pressure into a closed heated mold cavity wherein said mold cavity has at least one surface covered by a metal foil or plastic film, free of agents which promote nonadhesion, (c) permitting said polymerizing solution to cure in said mold against said metal foil or plastic film under pressure, and removing a cured metal foil or plastic film-clad article from said mold.
Claim 3
Dependent Claim
24 words
A product of claim 1 wherein said metal foil is selected from the group consisting of copper, silver, gold, aluminum, magnesium, titanium, and steel.
Claim 4
Dependent Claim
25 words
A product of claim 1 wherein said plastic film is selected from the group consisting of polyethersulphone, polyetheretherketone, nylon, polyester, polyimide, polycarbonate, and polyvinylidine fluorides.
Claim 5
Dependent Claim
93 words
A product of claim 1 when made by the steps which comprises: (a) mixing a vinyl isocyanurate/ethylenically unsaturated polymer solution with a free radical catalyst to initiate addition polymerization, (b) immediately injecting said polymerizing solution under pressure into a closed heated mold cavity wherein said mold cavity has at least one surface covered by a metal foil or a plastic film, (c) permitting said polymerizing solution to cure in said mold against said metal foil or plastic film under pressure, and removing a cured metal foil or plastic film clad article from said
Claim 6
Dependent Claim
67 words
A product of claim 4 wherein said polyvinylisocyanurate resin is made by trimerizing a reaction product of a polyisocyanate selected from the group consisting of toluene diisocyanate, diphenylmethane diisocyanate, and polyphenylene polymethylene polyisocyanate, with stoichiometric quantities of at least one ethylenically unsaturated monomer selected from the group consisting of hydroxypropylmethacrylate, hydroxymethylacrylate, hydroxypropylacrylate, hydroxyethylacrylate, pentaaerythritoltrimethacrylate and mixtures thereof and co-polymers of said vinyl isocyanurate with ethylenically unsaturated solvents.
Claim 7
Dependent Claim
14 words
A product of claim 1 wherein said polymerizing solution contains a reinforcing fiberous material.
Claim 8
Dependent Claim
18 words
A product of claim 6 wherein said fiber reinforced material is fiberglass and said metal foil is copper.
Claim 9
Dependent Claim
27 words
A product of claim 6 wherein said fiberous material is selected from the group consisting of glass, aramid fiber, graphite, metal, boron, aluminum, polyamide, polyimide, and polyester.
Claim 10
Dependent Claim
17 words
A product of claim 8 wherein said fiberous material is fiberglass and said metal foil is copper.
Claim 11
Dependent Claim
12 words
A product of claim 9 wherein said ethylenically unsaturated solvent is styrene.
Claim 12
Dependent Claim
21 words
A product of claim 1 wherein said mold cavity contains a reinforcing fiberous material which is impregnated by said polymerizing solution.
Claim 13
Dependent Claim
27 words
A product of claim 11 wherein said fiberous material is selected from the group consisting of glass, aramid, fiber, graphite, metal, boron, aluminum, polyamide, polyimide, and polyester.
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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) | 1993-04-09 | 1993-10-09 | 1994-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-04-09 | 1997-10-09 | 1998-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-04-09 | 2001-10-09 | 2002-04-10 | $7700.00 | Window Closed / Lapsed |