Patent US2836245A successfully refreshed from Google Patents.
Patent US3770598A successfully refreshed from Google Patents.
US3770598A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrodeposition of copper from acid baths
Assignee: Oxy Metal Finishing Corp
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Filing: 1972-01-21
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Granted: 1973-11-06
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Expires: 1992-01-21
Abstract
Abstract A bath for electrodepositing ductile, lustrous copper which comprises an aqueous acidic copper plating bath containing dissolved therein a brightening amount of the reaction product of polyethyleneimine and an alkylating agent which will alkylate the nitrogen of the polyethyleneimine to produce a quaternary nitrogen, wherein the reaction temperature for the imine and alkylating agent ranges from about room temperature to about 120*C and the reaction product is present in the bath in an amount from about 0.1 to 1,000 milligrams per liter.
Inventors
- 👤 H Creutz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:14
CPC Classifications
C; C25; C25D; C25D3/00; C25D3/02; C25D3/38
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
35 words
The bath as claimed in claim 1, wherein there is also present a bath soluble polyether compound and an organic sulfide compound selected from aliphatic polysulfides and organic sulfides carrying at least one sulfonic group.
Claim 2
Dependent Claim
68 words
The bath as claimed in claim 2, wherein the polyethyleneimine reaction product is present in an amount within the range of about 0.1 to 1,000 milligrams per liter, the polyether compound is present in an amount within the range of about 0.01 to 5 grams per liter and the organic sulfide compound is present in an amount within the range of about 0.0005 to 0.1 grams per liter.
Claim 3
Dependent Claim
32 words
The bath as claimed in claim 3, wherein the reaction product is formed by the reaction of polyethyleneimine and benzyl chloride, the polyether is polypropylene glycol and the organic sulfide is HO3S(CH2)3-S-S-(CH2)3-SO3H.
Claim 4
Dependent Claim
12 words
The bath of claim 1, wherein the alkylating agent is benzyl chloride.
Claim 5
Dependent Claim
12 words
The bath of claim 1, wherein the alkylating agent is allyl bromide.
Claim 6
Independent Claim
100 words
A method for electrodepositing a ductile, lustrous copper which comprises the step of electrodepositing copper from an aqueous copper plating bath containing dissolved therein a brightening amount of the reaction product of polyethyleneimine and an alkylating agent which will alkylate the nitrogen, said alkylating agent being selected from the groUp consisting of benzyl chloride, allyl bromide, propane sultone, and dimethyl sulfate, and wherein the reaction temperature for the imine and alkylating agent ranges from about room temperature to about 120*C and the reaction product is present in the bath in an amount from about 0.1 to 1,000 milligrams per liter.
Claim 7
Dependent Claim
36 words
The method as claimed in claim 7, wherein the plating bath also contains a bath-soluble polyether compound and an organic sulfide compound selected from aliphatic polysulfides and organic sulfide compounds carrying at least one sulfonic group.
Claim 8
Dependent Claim
77 words
The method as claimed in claim 8, wherein the polyethyleneimine reaction product is present in the bath in an amount within the range of about 0.1 to 1,000 milligrams per liter, the polyether compound is present in the bath in an amount within the range of about 0.01 to 5 grams per liter and the organic sulfide compound is present in the bath in an amount within the range of about 0.0005 to 1.0 grams per liter.
Claim 9
Dependent Claim
34 words
The method as claimed in claim 9, wherein the reaction product is formed by the reaction of polyethyleneimine and benzyl chloride, the polyether compound is polypropylene glycol, and the organic sulfide compound is HO3S-(CH2)3-S-S-(CH2)3SO3H.
Claim 10
Dependent Claim
12 words
The method of claim 7, wherein the alkylating agent is benzyl chloride.
Claim 11
Dependent Claim
12 words
The method of claim 7, wherein the alkylating agent is allyl bromide.
References Cited (Backward Citations)
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Cited
US3267010A
Cited
US3393135A
Cited
FR1515363A
Cited
US3328273A
Cited
US3502551A
Cited
US3542655A
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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) | 1976-11-05 | 1977-05-07 | 1977-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-05 | 1981-05-07 | 1981-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-05 | 1985-05-07 | 1985-11-06 | $7700.00 | Window Closed / Lapsed |