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US5696207A
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Fluroropolymeric substrates with metallized surfaces and methods for producing the same
Assignee: NAVY GOVERNMENT OF UNITED STATES REPRESENTED BY SECRETARY OF
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Filing: 1996-09-03
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Granted: 1997-12-09
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Expires: 2016-09-03
Abstract
Abstract Fluoropolymeric substrates with metallized surfaces may be prepared by self-assembly of a chemisorbed layer of a metal ion-chelating organosilane onto a fluoropolymer surface after radio-frequency glow discharge plasma surface hydroxylation. The silane covalently binds an aqueous palladium catalyst and subsequent electroless deposition yields homogeneous or patterned metal deposits that exhibit excellent adhesion to the fluoropolymer.
Inventors
- 👤 Terrence G. Vargo
- 👤 Jeffrey M. Calvert
- 👤 Joseph A. Gardella, Jr.
- 👤 Mu-San Chen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:44
CPC Classifications
C; C08; C08F; C08F8/00; C08F8/42; B; B82; B82Y; B82Y30/00; C23; C23C; C23C18/00; C23C18/16; C23C18/1601; C23C18/1603; C23C18/1605; C23C18/18; C23C18/20; C23C18/2006; C23C18/2046; C23C18/2073; C23C18/2086; C23C18/28; C23C18/30; H; H05; H05K; H05K3/00; H05K3/38; H05K3/381; H05K3/389
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
114 words
A fluoropolymer substrate having a metallized surface, prepared by a process comprising: (a) contacting (i) a fluoropolymer substrate having a surface with ligands which will bind an electroless metallization catalyst with (ii) an electroless metallization catalyst, to obtain a catalytic surface; and (b) contacting said catalytic surface with an electroless metallization solution, to obtain a metallized surface; wherein said ligands which will bind an electroless metallization catalyst are selected from the group consisting of C 1-4 -alkylamino, di-C 1-4 -alkylamino, 2-aminoethylamino, diethylenetriamino, pyridyl, bipyridyl, diphenylphosphino, mercapto, isonitrilo, nitrilo, imidazoyl, pyrrolyl, cyclopentadienyl, glycidoxy, and vinyl; and said electroless metallization catalystis selected from the group consisting of palladium, platinum, rhodium, iridium, nickel, copper, silver, and gold.
Claim 2
Dependent Claim
114 words
A fluoropolymer substrate having a metallized surface, prepared by a process comprising: (a) contacting (i) a fluoropolymer substrate having a surface with ligands which will bind an electroless metallization catalyst with (ii) an electroless metallization catalyst, to obtain a catalytic surface; and (b) contacting said catalytic surface with an electroless metallization solution, to obtain a metallized surface; wherein said ligands which will bind an electroless metallization catalyst are selected from the group consisting of C 1-4 -alkylamino, di-C 1-4 -alkylamino, 2-aminoethylamino, diethylenetriamino, pyridyl, bipyridyl, diphenylphosphino, mercapto, isonitrilo, nitrilo, imidazoyl, pyrrolyl, cyclopentadienyl, glycidoxy, and vinyl; and said electroless metallization catalystis selected from the group consisting of palladium, platinum, rhodium, iridium, nickel, copper, silver, and gold.
Claim 3
Dependent Claim
29 words
The fluoropolymer substrate having a metallized surface of claim 1, wherein said metallized surface comprises a conductive layer of nickel, copper, gold, platinum, palladium, cobalt, or an alloy thereof.
Claim 4
Dependent Claim
29 words
The fluoropolymer substrate having a metallized surface of claim 1 wherein said metallized surface comprises an intermediate layer of nickel metal and an outer layer of a conductive metal.
Claim 5
Dependent Claim
23 words
The fluoropolymer substrate having a metallized surface of claim 3 wherein said conductive metal is platinum, gold, copper, alloys of nickel, or palladium.
Claim 6
Dependent Claim
21 words
The floropolymer substrate having a metallized surface of claim 1 wherein said metallized surface is in the form of a pattern.
Claim 7
Independent Claim
115 words
A method for preparing a fluoropolymer substrate having a metallized surface comprising: (a) contacting (i) a fluoropolymer substrate having a surface with ligands which will bind an electroless metallization catalyst with (ii) an electroless metallization catalyst, to obtain a catalytic surface; and (b) contacting said catalytic surface with an electroless metallization solution, to obtain a metallized surface; wherein said ligands which will bind an electroless metallization catalyst are selected from the group consisting of C 1-4 -alkylamino, di-C 1-4 -alkylamino, 2-aminoethylamino, diethylenetriamino, pyridyl, bipyridyl, diphenylphosphino, mercapto, isonitrilo, nitrilo, imidazoyl, pyrrolyl, cyclopentadienyl, glycidoxy, and vinyl; and said electroless metallization catalyst is selected from the group consisting of palladium, platinum, rhodium, iridium, nickel, copper, silver, and gold.
Claim 8
Independent Claim
115 words
A method for preparing a fluoropolymer substrate having a metallized surface comprising: (a) contacting (i) a fluoropolymer substrate having a surface with ligands which will bind an electroless metallization catalyst with (ii) an electroless metallization catalyst, to obtain a catalytic surface; and (b) contacting said catalytic surface with an electroless metallization solution, to obtain a metallized surface; wherein said ligands which will bind an electroless metallization catalyst are selected from the group consisting of C 1-4 -alkylamino, di-C 1-4 -alkylamino, 2-aminoethylamino, diethylenetriamino, pyridyl, bipyridyl, diphenylphosphino, mercapto, isonitrilo, nitrilo, imidazoyl, pyrrolyl, cyclopentadienyl, glycidoxy, and vinyl; and said electroless metallization catalyst is selected from the group consisting of palladium, platinum, rhodium, iridium, nickel, copper, silver, and gold.
Claim 9
Dependent Claim
99 words
The method of claim 6, wherein said fluoropolymer substrate having a surface with ligands which will bind an electroless metallization catalyst is prepared by a process comprising: (a') contacting a fluoropolymer substrate having a surface with hydroxyl groups with a compound of formula (I) Y.paren open-st.CH.sub.2 .paren close-st..sub.n Si.paren open-st.X).sub.3(I) wherein Y is any group which contains a ligand which will bind an electroless metallization catalyst, X is chlorine, bromine, fluorine, alkyl having 1 to 4 carbon atoms, chloromethyl, monoethylamino, dimethylamino, methoxy, ethoxy, propoxy, isopropoxy, butoxy, trimethylsilyl, or trimethylsilylamino; and n is an integer of from 1 to 17.
Claim 10
Dependent Claim
33 words
The method of claim 7, further comprising: (b') irradiating said surface having ligands which will bind an electroless metallization catalyst through a mask to remove a portion of said ligands from said surface.
Claim 11
Dependent Claim
61 words
The method of claim 7, wherein said fluoropolymer substrate having a surface with hydroxyl groups is prepared by a process comprising: (a") contacting a fluoropolymer with a gas/vapor plasma mixture comprising hydrogen and at least one member selected from the group consisting of water, methanol, and formaldehyde, while exposing said fluoropolymer to at least one radio frequency glow discharge under vacuum.
Claim 12
Dependent Claim
41 words
The method of claim 9, wherein said contacting of said fluoropolymer with said gas/vapor mixture while exposing to a radio frequency glow discharge is carried out through a mask to obtain a surface which has hydroxyl groups arranged in a pattern.
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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) | 2000-12-08 | 2001-06-09 | 2001-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-12-08 | 2005-06-09 | 2005-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-12-08 | 2009-06-09 | 2009-12-09 | $7700.00 | Window Closed / Lapsed |