US4522850A
Expired / Lapsed
US
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Polymeric substrates for electroless metal deposition
Assignee: MECHATRONICS LLC
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Filing: 1982-04-05
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Granted: 1985-06-11
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Expires: 2002-04-05
Abstract
Abstract New polymeric substrates for the electroless deposition of metal thereon. The substrates of the invention result from the polymerization of liquid mixtures comprising a liquid precursor of a polymer that is relatively susceptible to oxidative attack and a liquid precursor of a polymer that resists oxidation.
Inventors
- 👤 Edward J. Leech
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:28
CPC Classifications
H; H05; H05K; H05K1/00; H05K1/02; H05K1/03; B; B05; B05D; B05D5/00; B05D5/12; C; C08; C08L; C08L13/00; C08L63/00; C23; C23C; C23C18/00; C23C18/16; C23C18/18; C23C18/20; C23C18/2006; C23C18/2046; C23C18/2053; C23C18/2066; C23C18/2073; C23C18/2086; C23C18/22; C23C18/24; C23C18/28; C23C18/285; C23C18/30; H05K2201/00; H05K2201/01; H05K2201/0104; H05K2201/0133; H05K2203/00; H05K2203/07; H05K2203/0756; H05K2203/0759; H05K3/00; H05K3/10; H05K3/18; H05K3/181
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
168 words
A process for electrolessly metal plating an article comprising the steps: (a) providing on the surface or portions of the surface of an article to be plated an polymeric layer which is a diphase polymerization product of a liquid mixture comprising (i) from about 45 to about 65 weight percent of a liquid precursor of a solid polymer having ethylenic unsaturation which upon polymerization yields an unsaturated substituted acrylonitrile butadiene rubber susceptible to oxidative degradation and (ii) from about 20 to about 40 weight percent of a highly functional aromatic liquid epoxy resin having substantially no ethylenic unsaturation which upon polymerization yields a thermosetting resin which is relatively impervious to oxidation, said diphase polymerization product having a dispersed phase rich in the polymer having ethylenic unsaturation and a continuous phase rich in the polymer having substantially no ethylenic unsaturation; (b) oxidizing said polymeric layer to render said layer microporous; and (c) contacting said microporous layer with an electroless metal deposition bath to form a layer of metal thereon.
Claim 2
Dependent Claim
168 words
A process for electrolessly metal plating an article comprising the steps: (a) providing on the surface or portions of the surface of an article to be plated an polymeric layer which is a diphase polymerization product of a liquid mixture comprising (i) from about 45 to about 65 weight percent of a liquid precursor of a solid polymer having ethylenic unsaturation which upon polymerization yields an unsaturated substituted acrylonitrile butadiene rubber susceptible to oxidative degradation and (ii) from about 20 to about 40 weight percent of a highly functional aromatic liquid epoxy resin having substantially no ethylenic unsaturation which upon polymerization yields a thermosetting resin which is relatively impervious to oxidation, said diphase polymerization product having a dispersed phase rich in the polymer having ethylenic unsaturation and a continuous phase rich in the polymer having substantially no ethylenic unsaturation; (b) oxidizing said polymeric layer to render said layer microporous; and (c) contacting said microporous layer with an electroless metal deposition bath to form a layer of metal thereon.
Claim 3
Dependent Claim
28 words
A process as defined in claim 1 wherein after step (b) and before step (c), said microporous layer is seeded to render it catalytic to electroless metal deposition.
Claim 4
Dependent Claim
32 words
A process as defined in claim 1 wherein step (a) is carried out by applying the liquid mixture to the surface of said article and then polymerizing said liquid mixture in situ.
Claim 5
Dependent Claim
34 words
A process as defined in claim 1 wherein step (a) is carried out by forming a thin, precured sheet of said polymerization product and then laminating said sheet to the surface of said article.
Claim 6
Dependent Claim
17 words
A process as defined in claim 1 wherein component (i) is a liquid precursor of a rubber.
Claim 7
Dependent Claim
14 words
A process as defined in claim 5 wherein component (i) includes conjugated double bonds.
Claim 8
Dependent Claim
15 words
A process as defined in claim 6 wherein component (i) is a liquid carboxyl-terminated acrylonitrile-butadiene.
Claim 9
Dependent Claim
21 words
A process as defined in claim 7 wherein said carboxyl-terminated acrylonitrile-butadiene also has carboxyl groups randomly dispersed along the molecular chain.
Claim 10
Dependent Claim
21 words
A process as defined in claim 1 wherein prior to electroless metal deposition, said polymeric layer also includes a catalytic filler.
Claim 11
Dependent Claim
100 words
A process for electrolessly plating an article comprising the steps: (a) providing on the surface or portions of the surface of an article to be plated a polymeric layer which is a diphase polymerization product of a liquid mixture comprising (i) from about 45 to about 65 weight percent of a liquid carboxyl-terminated acrylonitrile-butadiene and (ii) from about 20 to about 40 weight percent of a highly functional liquid epoxylated novolac; (b) oxidizing said layer to render said polymeric layer microporous; and (c) contacting said microporous layer with an electroless metal deposition bath to form a layer of metal thereon.
Claim 12
Dependent Claim
100 words
A process for electrolessly plating an article comprising the steps: (a) providing on the surface or portions of the surface of an article to be plated a polymeric layer which is a diphase polymerization product of a liquid mixture comprising (i) from about 45 to about 65 weight percent of a liquid carboxyl-terminated acrylonitrile-butadiene and (ii) from about 20 to about 40 weight percent of a highly functional liquid epoxylated novolac; (b) oxidizing said layer to render said polymeric layer microporous; and (c) contacting said microporous layer with an electroless metal deposition bath to form a layer of metal thereon.
Claim 13
Dependent Claim
22 words
A process as defined in claim 10 wherein in step (a), said liquid mixture further includes (iii) a liquid phenolic non-epoxylated novolac.
Claim 14
Dependent Claim
16 words
A process as defined in claim 10 wherein said polymeric layer also includes a catalytic filler.
Claim 15
Dependent Claim
21 words
A process as defined in claim 10 wherein said carboxyl-terminated acrylonitrile-butadiene also has carboxyl groups randomly dispersed along the molecular chain.
Claim 16
Dependent Claim
119 words
A process for electrolessly metal plating an article, including the steps: (a) providing a surface comprising the polymerization product of a totally liquid mixture comprising (1) from about 45 to about 65 weight percent liquid carboxyl-terminated acrylonitrile butadiene, said compound also having carboxyl groups dispersed along the chain length; (2) from about 20 to about 40 weight percent of an epoxylated novolac; and (3) from zero to about 35 weight percent of a liquid phenolic non-epoxylated novolac, on at least the portion of the article to be electrolessly metal plated; (b) oxidizing the surface of step (a) to render said surface microporous; and (c) metallizing at least one area of said microporous surface in an electroless metal deposition bath.
Claim 17
Dependent Claim
119 words
A process for electrolessly metal plating an article, including the steps: (a) providing a surface comprising the polymerization product of a totally liquid mixture comprising (1) from about 45 to about 65 weight percent liquid carboxyl-terminated acrylonitrile butadiene, said compound also having carboxyl groups dispersed along the chain length; (2) from about 20 to about 40 weight percent of an epoxylated novolac; and (3) from zero to about 35 weight percent of a liquid phenolic non-epoxylated novolac, on at least the portion of the article to be electrolessly metal plated; (b) oxidizing the surface of step (a) to render said surface microporous; and (c) metallizing at least one area of said microporous surface in an electroless metal deposition bath.
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) | 1988-06-10 | 1988-12-10 | 1989-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-06-10 | 1992-12-10 | 1993-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-06-10 | 1996-12-10 | 1997-06-11 | $7700.00 | Window Closed / Lapsed |