US4053373A
Expired / Lapsed
US
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Electroplating of nickel, cobalt, nickel-cobalt, nickel-iron, cobalt-iron and nickel-iron-cobalt deposits
Assignee: M&T HARSHAW
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Filing: 1976-06-17
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Granted: 1977-10-11
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Expires: 1996-06-17
Abstract
Abstract In accordance with certain of its aspects this invention relates to a process and composition for the preparation of an electrodeposit which contains; at least one metal selected from the group consisting of nickel and cobalt or; binary or ternary alloys of the metals selected from nickel, iron and cobalt; which comprises passing current from an anode to a cathode through an aqueous acidic electroplating solution containing at least one member selected from the group consisting of nickel compounds and cobalt compounds and which may additionally contain iron compounds providing nickel, cobalt and iron ions for electrodepositing nickel, cobalt, nickel-cobalt alloys, nickel-iron alloys, cobalt-iron alloys or nickel-iron-cobalt alloys and containing an effective amount of at least one additive; the improvement comprising the presence of 2×10 -5 moles per liter to 0.1 moles per liter of an α-hydroxy sulfone having the formula: ##STR1## wherein R is selected from the group consisting of alkyl, aralkyl, aryl and alkaryl; R' is hydrogen or a mono or divalent alkyl, aralkyl, aryl, or alkaryl group, or the group ##STR2## where R is as previously defined; and n is an integer 1 or 2 corresponding to the valence of R'; additionally when n is 2, R' may be absent; for a time period sufficient to form a metal electroplate upon said cathode.
Inventors
- 👤 Warren H. McMullen
- 👤 Thomas J. Mooney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:18
CPC Classifications
C; C25; C25D; C25D3/00; C25D3/02; C25D3/56; C25D3/562
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
201 words
In a process for the preparation of an electrodeposit which contains; at least one metal selected from the group consisting of nickel and cobalt or; binary or ternary alloys of the metals selected from nickel, iron, and cobalt; which comprises passing current from an anode to a cathode through an aqueous acidic electroplating solution containing at least one member selected from the group consisting of nickel compounds and cobalt compounds and which may additionally contain iron compounds providing nickel, cobalt and iron ions for electrodepositing nickel, cobalt, nickel-cobalt alloys, nickel-iron alloys, cobalt-iron alloys or nickel-iron-cobalt alloys and containing at least one additive; the improvement comprising the presence of 2×10 -5 moles per liter to 0.1 moles per liter of an α-hydroxy sulfone having the formula: ##STR10## wherein R is selected from the group consisting of alkyl, aralkyl, aryl and alkaryl; R' is hydrogen or a mono or divalent alkyl, aralkyl, aryl, or alkaryl group, or the group ##STR11## wherein R is as previously defined; and n is an integer 1 or 2corresponding to the valence of R'; provided that when n is 2, R' is present or absent; for a time period sufficient to form a metal electroplate upon said cathode.
Claim 2
Dependent Claim
201 words
In a process for the preparation of an electrodeposit which contains; at least one metal selected from the group consisting of nickel and cobalt or; binary or ternary alloys of the metals selected from nickel, iron, and cobalt; which comprises passing current from an anode to a cathode through an aqueous acidic electroplating solution containing at least one member selected from the group consisting of nickel compounds and cobalt compounds and which may additionally contain iron compounds providing nickel, cobalt and iron ions for electrodepositing nickel, cobalt, nickel-cobalt alloys, nickel-iron alloys, cobalt-iron alloys or nickel-iron-cobalt alloys and containing at least one additive; the improvement comprising the presence of 2×10 -5 moles per liter to 0.1 moles per liter of an α-hydroxy sulfone having the formula: ##STR10## wherein R is selected from the group consisting of alkyl, aralkyl, aryl and alkaryl; R' is hydrogen or a mono or divalent alkyl, aralkyl, aryl, or alkaryl group, or the group ##STR11## wherein R is as previously defined; and n is an integer 1 or 2corresponding to the valence of R'; provided that when n is 2, R' is present or absent; for a time period sufficient to form a metal electroplate upon said cathode.
Claim 3
Dependent Claim
13 words
The process of claim 1 wherein at least one α-hydroxysulfone is hydroxymethyl methylsulfone.
Claim 4
Dependent Claim
12 words
The process of claim 1 wherein at least one α-hydroxysulfone is α-hydroxymethylsulfone.
Claim 5
Dependent Claim
13 words
The process of claim 1 wherein at least one α-hydroxysulfone is α-hydroxybenzyl methylsulfone.
Claim 6
Dependent Claim
12 words
The process of claim 1 wherein at least one α-hydroxysulfone is α-hydroxybenzyl-p-tolylsulfone.
Claim 7
Dependent Claim
13 words
The process of claim 1 wherein at least one α-hydroxysulfone is α-hydroxybenzyl ethylsulfone.
Claim 8
Dependent Claim
12 words
The process of claim 1 wherein at least one α-hydroxysulfone is hydroxymethyl-p-tolylsulfone.
Claim 9
Dependent Claim
13 words
The process of claim 1 wherein at least one α-hydroxysulfone is hydroxymethyl phenylsulfone.
Claim 10
Dependent Claim
12 words
The process of claim 1 wherein at least one α-hydroxysulfone is α-hydroxyethyl-p-tolylsulfone.
Claim 11
Dependent Claim
12 words
The process of claim 1 wherein at least one α-hydroxysulfone is 1,2-dihydroxy-1,2-di(methylsulfonyl)ethane.
Claim 12
Dependent Claim
13 words
The process of claim 1 wherein at least one α-hydroxysulfone is p-xylene-α,α'-di(methyl sulfone).
Claim 13
Dependent Claim
175 words
In a composition for the preparation of an electrodeposit which contains; at least one metal selected from the group consisting of nickel and cobalt or; binary or ternary alloys of the metals selected from nickel, iron, and cobalt; which comprises an aqueous acidic electroplating solution containing at least one member selected from the group consisting of nickel compounds and cobalt compounds and iron compounds providing nickel, cobalt and iron ions for electrodepositing nickel, cobalt, nickel-cobalt alloys, nickel-iron alloys, cobalt-iron alloys or nickel-iron-cobalt alloys and containing at least one additive; the improvement comprising the presence of 2×10 -5 moles per liter to 0.1 moles per liter of an α-hydroxy sulfone having the formula: ##STR12## wherein R is selected from the group consisting of alkyl, aralkyl, aryl and alkaryl; R' is hydrogen or a mono or divalent alkyl, aralkyl, aryl, or alkaryl group, or the group ##STR13## where R is as previously defined; and n is an integer 1 or 2 corresponding to the valence of R'; provided that when n is 2, R' present or absent.
Claim 14
Dependent Claim
175 words
In a composition for the preparation of an electrodeposit which contains; at least one metal selected from the group consisting of nickel and cobalt or; binary or ternary alloys of the metals selected from nickel, iron, and cobalt; which comprises an aqueous acidic electroplating solution containing at least one member selected from the group consisting of nickel compounds and cobalt compounds and iron compounds providing nickel, cobalt and iron ions for electrodepositing nickel, cobalt, nickel-cobalt alloys, nickel-iron alloys, cobalt-iron alloys or nickel-iron-cobalt alloys and containing at least one additive; the improvement comprising the presence of 2×10 -5 moles per liter to 0.1 moles per liter of an α-hydroxy sulfone having the formula: ##STR12## wherein R is selected from the group consisting of alkyl, aralkyl, aryl and alkaryl; R' is hydrogen or a mono or divalent alkyl, aralkyl, aryl, or alkaryl group, or the group ##STR13## where R is as previously defined; and n is an integer 1 or 2 corresponding to the valence of R'; provided that when n is 2, R' present or absent.
Claim 15
Dependent Claim
13 words
The composition of claim 12 wherein at least one α-hydroxysulfone is hydroxymethyl methylsulfone.
Claim 16
Dependent Claim
15 words
The composition as claimed in claim 12 wherein at least one α-hydroxysulfone is α-hydroxyethyl methylsulfone.
Claim 17
Dependent Claim
15 words
The composition as claimed in claim 12 wherein at least one α-hydroxysulfone is α-hydroxybenzyl methylsulfone.
Claim 18
Dependent Claim
14 words
The composition as claimed in claim 12 wherein at least one α-hydroxysulfone is α-hydroxybenzyl-p-tolylsulfone.
Claim 19
Dependent Claim
13 words
The composition of claim 12 wherein at least one α-hydroxysulfone is α-hydroxybenzyl ethylsulfone.
Claim 20
Dependent Claim
14 words
The composition as claimed in claim 12 wherein at least one α-hydroxysulfone is hydroxymethyl-p-tolylsulfone.
Claim 21
Dependent Claim
15 words
The composition as claimed in claim 12 wherein at least one α-hydroxysulfone is hydroxymethyl phenylsulfone.
Claim 22
Dependent Claim
14 words
The composition as claimed in claim 12 wherein at least one α-hydroxysulfone is α-hydroxyethyl-p-tolylsulfone.
Claim 23
Dependent Claim
15 words
THe composition as claimed in claim 12 wherein at least one α-hydroxysulfone is 1,2-dihydroxy-1,2-di(methyl sulfonyl)ethane.
Claim 24
Dependent Claim
14 words
The composition of claim 12 wherein at least one α-hydroxylsulfone is p-xylene-α,α'-diol-α,α'-di (methyl sulfone)
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) | 1980-10-10 | 1981-04-11 | 1981-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-10-10 | 1985-04-11 | 1985-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-10-10 | 1989-04-11 | 1989-10-11 | $7700.00 | Window Closed / Lapsed |