US3715289A
Expired / Lapsed
US
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Brightener composition for acid copper electroplating baths
Assignee: Stauffer Chemical Co
•
Filing: 1971-02-08
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Granted: 1973-02-06
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Expires: 1991-02-08
Abstract
Abstract There is disclosed a novel brightener composition for aqueous, acid copper electroplating baths comprising a combination of an ethylene oxide adduct of 2,4,7,9-tetramethyl-5-decyne-4,7-diol; disodium 2,7-dihydroxy-4,5-dithiaoctane-1,8-disulfonate monohydrate; and, 2-mercaptopyridine. The use of this brightener composition if found to provide bright, leveled ductile copper deposits from an acid copper electrolyte.
Inventors
- 👤 R Cope
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 14:06
CPC Classifications
C; C25; C25D; C25D3/00; C25D3/02; C25D3/38
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
24 words
In an aqueous acid copper bath for the electrodeposition of copper, the improvement which comprises having dissolved in said bath an additive mixture comprising:
Claim 2
Dependent Claim
24 words
In an aqueous acid copper bath for the electrodeposition of copper, the improvement which comprises having dissolved in said bath an additive mixture comprising:
Claim 3
Dependent Claim
17 words
from about 0.03 to 1.66 grams/liter of an ethylene oxide adduct of 2,4,7,9-tetramethyl-5-decyne-4,7-diol corresponding to the formula:
Claim 4
Dependent Claim
17 words
from about 0.03 to 1.66 grams/liter of an ethylene oxide adduct of 2,4,7,9-tetramethyl-5-decyne-4,7-diol corresponding to the formula:
Claim 5
Dependent Claim
16 words
from about 0.03 to 1.66 grams/liter of ethylene oxide adduct of 2,4,7,9-tetramethyl-5-decyne-4,7-diol corresponding to the formula:
Claim 6
Dependent Claim
16 words
from about 0.03 to 1.66 grams/liter of ethylene oxide adduct of 2,4,7,9-tetramethyl-5-decyne-4,7-diol corresponding to the formula:
Claim 7
Dependent Claim
11 words
from about 0.005 to 0.0266 grams/liter of disodium 2,7-dihydroxy-4,5-dithiaoctane-1,8-disulfonate monohydrate; and,
Claim 8
Dependent Claim
11 words
from about 0.005 to 0.0266 grams/liter of disodium 2,7-dihydroxy-4,5-dithiaoctane-1,8-disulfonate monohydrate; and,
Claim 9
Dependent Claim
46 words
The bath of claim 1, wherein said ethylene oxide adduct is present in a concentration of about 0.16 grams/liter, said disodium 2,7-dihydroxy-4,5-dithiaoctane-1,8-disulfonate monohydrate is present in a concentration of about 0.018 grams/liter and said 2-mercaptopyridine is present in a concentration of about 0.006 grams per liter.
Claim 10
Dependent Claim
10 words
from about 0.005 to 0.0266 grams/liter of disodium 2,7-dihydroxy-4,5dithiaoctane-1,8-disulfonate, monohydrate;
Claim 11
Dependent Claim
10 words
from about 0.005 to 0.0266 grams/liter of disodium 2,7-dihydroxy-4,5dithiaoctane-1,8-disulfonate, monohydrate;
Claim 12
Dependent Claim
8 words
from about 0.005 to 0.14 grams/liter of 2-mercaptopyridine.
Claim 13
Dependent Claim
8 words
from about 0.005 to 0.14 grams/liter of 2-mercaptopyridine.
Claim 14
Dependent Claim
27 words
In the process of electrodepositing copper from an aqueous, acid copper plating bath, the improvement which comprises the dissolution in said bath of an additive mixture comprising
Claim 15
Dependent Claim
27 words
In the process of electrodepositing copper from an aqueous, acid copper plating bath, the improvement which comprises the dissolution in said bath of an additive mixture comprising
Claim 16
Dependent Claim
8 words
from about 0.005 to 0.14 grams/liter of 2-mercaptopyridine.
Claim 17
Dependent Claim
8 words
from about 0.005 to 0.14 grams/liter of 2-mercaptopyridine.
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) | 1976-02-06 | 1976-08-07 | 1977-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-06 | 1980-08-07 | 1981-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-06 | 1984-08-07 | 1985-02-06 | $7700.00 | Window Closed / Lapsed |