US3940320A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrodeposition of copper
Assignee: M&T HARSHAW
•
Filing: 1974-11-21
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Granted: 1976-02-24
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Expires: 1994-11-21
Abstract
Abstract This invention relates to novel compositions and to a process for electrodepositing copper from an aqueous acidic copper plating bath containing at least one member independently selected from each of the following two groups: A. an aryl quaternary N-heteroaromatic or N-heteroaliphatic ring compound or salt exhibiting the structure: ##EQU1## WHEREIN R is selected from the group consisting of phenyl, benzyl and p-xylyl and the N-Ring is selected from the group consisting of substituted and unsubstituted N-heteroaliphatic rings and substituted and unsubstituted N-heteroaromatic rings; Y is present or absent; Y, when present, represents an anionic moiety, n is 1 save when R is p-xylyl n is 2; B. sulfoalkyl sulfide compounds containing the grouping --S--Alk--SO 3 M where M is one gram-equivalent of a cation and --Alk-- is a divalent aliphatic hydrocarbon group of 1 to 8 carbon atoms.
Inventors
- 👤 Otto Kardos
- 👤 Donald A. Arcilesi
- 👤 Silvester P. Valayil
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:40
CPC Classifications
C; C25; C25D; C25D3/00; C25D3/02; C25D3/38
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
149 words
A process for electrodepositing copper from an aqueous acidic copper plating bath containing at least one member independently selected from each of the following two groups; A. 0.005 to 40 grams per liter of an aryl N-heteroaromatic or N-heteroaliphatic ring compound or salt exhibiting the structure ##EQU17## wherein R is selected from the group consisting of phenyl, benzyl and p-xylyl and the N-Ring is selected from the group consisting of substituted and unsubstituted N-heteroaliphatic rings and substituted and unsubstituted N-heteroaromatic rings; Y is present or absent; Y, when present, represents an anionic moiety, n is save when R is p-xylyl n is 2; and B. sulfoalkyl sulfide compounds containing the grouping --S--Alk--SO 3 M where M is one gram-equivalent of a cation and --Alk-- is a divalent aliphatic hydrocarbon group of 1 to 8 carbon atoms in an amount of 0.01 milligrams per liter to 1000 milligrams per liter.
Claim 2
Dependent Claim
149 words
A process for electrodepositing copper from an aqueous acidic copper plating bath containing at least one member independently selected from each of the following two groups; A. 0.005 to 40 grams per liter of an aryl N-heteroaromatic or N-heteroaliphatic ring compound or salt exhibiting the structure ##EQU17## wherein R is selected from the group consisting of phenyl, benzyl and p-xylyl and the N-Ring is selected from the group consisting of substituted and unsubstituted N-heteroaliphatic rings and substituted and unsubstituted N-heteroaromatic rings; Y is present or absent; Y, when present, represents an anionic moiety, n is save when R is p-xylyl n is 2; and B. sulfoalkyl sulfide compounds containing the grouping --S--Alk--SO 3 M where M is one gram-equivalent of a cation and --Alk-- is a divalent aliphatic hydrocarbon group of 1 to 8 carbon atoms in an amount of 0.01 milligrams per liter to 1000 milligrams per liter.
Claim 3
Dependent Claim
16 words
The process as claimed in claim 1 wherein the cooperating amine is of the formula: ##SPC3##
Claim 4
Dependent Claim
16 words
The process as claimed in claim 1 wherein the cooperating amine is of the formula: ##SPC4##
Claim 5
Dependent Claim
16 words
The process as claimed in claim 1 wherein the cooperating amine is of the formula: ##SPC5##
Claim 6
Dependent Claim
16 words
The process as claimed in claim 1 wherein the cooperating amine is of the formula: ##SPC6##
Claim 7
Dependent Claim
16 words
The process as claimed in claim 1 wherein the cooperating amine is of the formula: ##SPC7##
Claim 8
Dependent Claim
16 words
The process as claimed in claim 1 wherein the cooperating amine is of the formula: ##SPC8##
Claim 9
Dependent Claim
16 words
The process as claimed in claim 1 wherein the cooperating amine is of the formula: ##SPC9##
Claim 10
Dependent Claim
16 words
The process as claimed in claim 1 wherein the cooperating amine is of the formula: ##SPC10##
Claim 11
Dependent Claim
16 words
The process as claimed in claim 1 wherein the cooperating amine is of the formula: ##SPC11##
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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) | 1979-02-23 | 1979-08-25 | 1980-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-02-23 | 1983-08-25 | 1984-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-02-23 | 1987-08-25 | 1988-02-24 | $7700.00 | Window Closed / Lapsed |