Patent US4066804A successfully refreshed from Google Patents.
US4066804A
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Metal deposition process
Assignee: Imperial Chemical Industries Ltd
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Filing: 1974-10-01
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Granted: 1978-01-03
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Expires: 1994-10-01
Abstract
Abstract Metal is deposited on a substrate containing neutral radicals, radical cations or neutral molecules (the latter being derived from a dication normally stable in aqueous media), by contacting the substrate with an electroless plating solution, optionally after sensitization with a salt of a platinum group metal silver or gold. The use of the process for data recording, particularly for the production of magnetic information carriers e.g. tapes or discs, metallizing plastic foam and for producing printed circuits is described.
Inventors
- 👤 Timothy Douglas Andrews
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:59
CPC Classifications
H; H01; H01F; H01F41/00; H01F41/32; H01F41/34; C; C23; C23C; C23C18/00; C23C18/16; C23C18/1601; C23C18/1603; C23C18/1607; C23C18/1612; C23C18/1633; C23C18/1635; C23C18/1639; C23C18/1641; C23C18/18; C23C18/20; C23C18/2006; C23C18/2046; C23C18/2053; C23C18/206; C23C18/28; C23C18/30; G; G03; G03C; G03C1/00; G03C1/72; G03C1/73; G03C5/00; G03C5/58; H05; H05K; H05K1/00; H05K1/02; H05K1/03; H05K1/0313; H05K1/0353; H05K1/0373; H05K3/00; H05K3/10; H05K3/18; H05K3/181; H05K3/38; H05K3/381
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
62 words
A process for the deposition of metal in or on substrate characterized in that the substrate contains or consists of, as active component, a polymeric compound comprising units derived from a cation of the general formula ##STR14## where R 1-12 are hydrogen, halogen or organic substituents and n = 0 or an integer, comprising contacting the substrate with an electroless plating solution.
Claim 2
Dependent Claim
62 words
A process for the deposition of metal in or on substrate characterized in that the substrate contains or consists of, as active component, a polymeric compound comprising units derived from a cation of the general formula ##STR14## where R 1-12 are hydrogen, halogen or organic substituents and n = 0 or an integer, comprising contacting the substrate with an electroless plating solution.
Claim 3
Dependent Claim
39 words
A process according to claim 1 in which the substrate is contacted first with a sensitiser comprising a solution of a compound of a metal of the platinum group, silver or gold and subsequently with the electroless plating solution.
Claim 4
Dependent Claim
38 words
A process according to claim 2 wherein said polymeric compound consists of units having the structure ##STR15## where R is a bipyridilium group selected from the group consisting of 4,4'-bipyridylium; 4,4'-biquinolinium; 1,2-bis(4-pyridyl) ethylene; 2,7-diazapyrinium; 2,2'-bipyridyl and 4-(4'-pyridyl) pyridinium.
Claim 5
Dependent Claim
20 words
A process according to claim 1 in which the active component is supported in a water soluble or swellable polymer.
Claim 6
Dependent Claim
23 words
A process according to claim 1 in which the active component is formed in situ from the cation by radiation or by heat.
Claim 7
Dependent Claim
70 words
A data recording process which comprises preparing a substrate, containing or consisting of, as active component, a polymeric compound comprising units derived from a cation of the general formula ##STR16## where R 1-12 are hydrogen, halogen or organic substituents and n = 0 or an integer, comprising contacting the substrate with an electroless plating solution, exposing said substrate to radiation or heat, and subsequently contacting with an electroless plating solution.
Claim 8
Dependent Claim
70 words
A data recording process which comprises preparing a substrate, containing or consisting of, as active component, a polymeric compound comprising units derived from a cation of the general formula ##STR16## where R 1-12 are hydrogen, halogen or organic substituents and n = 0 or an integer, comprising contacting the substrate with an electroless plating solution, exposing said substrate to radiation or heat, and subsequently contacting with an electroless plating solution.
Claim 9
Dependent Claim
36 words
A data recording process according to claim 6 in which the exposed material is contacted with a sensitising solution of a metal of the platinum group, silver or gold before contact with the electroless plating solution.
Claim 10
Dependent Claim
19 words
A data recording process according to claim 6 in which the plating solution is a ferromagnetic material plating solution.
Claim 11
Dependent Claim
22 words
A data recording process according to claim 8 in which the plating solution is selected from cobalt/phosphorus, nickel/phosphorus and cobalt/nickel/phosphorus plating solutions.
Claim 12
Dependent Claim
24 words
A data recording process according to claim 8 wherein the imagewise distribution of polymeric compound is a series of discrete tracks on the support.
Claim 13
Dependent Claim
22 words
A data recording process according to claim 6 in which the support is a non-magnetic disc bearing a coating containing said salt.
Claim 14
Dependent Claim
22 words
A data recording process according to claim 6 in which the support is a polymeric film bearing a coating containing said salt.
Claim 15
Dependent Claim
20 words
A data recording process according to claim 12 in which the support is a tape formed from a linear polyester.
Claim 16
Dependent Claim
40 words
A data recording process according to claim 6 wherein said polymeric compound consists of units having the structure ##STR17## where R is a bipyridilium group selected from the group consisting of 4,4'-bipyridylium; 4,4'-biquinolinium; 1,2-bis(4-pyridyl) ethylene; 2,7-diazapyrinium; 2,2'-bipyridyl and 4-(4'-pyridyl) pyridinium.
Claim 17
Independent Claim
62 words
A method of producing metallised foam which includes the steps of introducing an active polymeric compound comprising units derived from a cation of the general formula ##STR18## wherein R 1-12 ae hydrogen, halogen, or organic substituents and n = 0 or an integer into a plastics foam and electroless plating, consolidating the deposited metal by electroplating and optionally removing the plastics material.
Claim 18
Independent Claim
62 words
A method of producing metallised foam which includes the steps of introducing an active polymeric compound comprising units derived from a cation of the general formula ##STR18## wherein R 1-12 ae hydrogen, halogen, or organic substituents and n = 0 or an integer into a plastics foam and electroless plating, consolidating the deposited metal by electroplating and optionally removing the plastics material.
Claim 19
Dependent Claim
42 words
A method of producing metallised foam according to claim 15 wherein said polymeric compound consists of units having the structure ##STR19## where R is a bipyridilium group selected from the group consisting of 4,4'-bipyridylium; 4,4'-biquinolinium; 1,2-bis(4-pyridyl) ethylene; 2,7-diazapyrinium; 2,2'-bipyridyl and 4-(4'-pyridyl) pyridinium.
Claim 20
Independent Claim
68 words
A method of producing printed circuits for electrical or electronic devices in which a circuitwise distribution of a polymer compound comprising of units of an active component derived from a cation of the general formula ##STR20## where R 1-12 are hydrogen, halogen or organic substituents and n=0 or an integer is formed on a base support material, electroless plating, and building up the metallic layer by further plating.
Claim 21
Independent Claim
68 words
A method of producing printed circuits for electrical or electronic devices in which a circuitwise distribution of a polymer compound comprising of units of an active component derived from a cation of the general formula ##STR20## where R 1-12 are hydrogen, halogen or organic substituents and n=0 or an integer is formed on a base support material, electroless plating, and building up the metallic layer by further plating.
Claim 22
Dependent Claim
42 words
A method of producing printed circuits according to claim 17 wherein said polymeric compound consists of units having the structure ##STR21## where R is a bipyridilium group selected from the group consisting of 4,4'-bipyridylium; 4,4'-biquinolinium; 1,2-bis(4-pyridyl) ethylene; 2,7-diazapyrinium; 2,2'-bipyridyl and 4-(4'-pyridyl) pyridinium.
Claim 23
Dependent Claim
52 words
A method according to claim 17 for the production of circuits having regions of differing resistivity in which a first circuitwise distribution of active components is plated with a first metal and then a second circuitwise distribution of active component is plated with a second metal of higher resistivity than the first.
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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) | 1981-01-02 | 1981-07-04 | 1982-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-01-02 | 1985-07-04 | 1986-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-01-02 | 1989-07-04 | 1990-01-03 | $7700.00 | Window Closed / Lapsed |