Patent US4728398A successfully refreshed from Google Patents.
US4728398A
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Electroplating bath for simultaneous deposition of metal and a permanent solid lubricant
Assignee: WERNER FLUHMANN AG A CORP OF SWITZERLAND
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Filing: 1986-04-18
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Granted: 1988-03-01
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Expires: 2006-04-18
Abstract
Abstract The disadvantages of difficulty in operation of the bath and unfavorable physical properties obtained with the simultaneous deposition of metal and a permanent solid lubricant in electroplating baths of conventional composition and containing solid lubricant particles and a perfluorized compound acting as a cationic tenside are avoided if, instead of the perfluorized compound, the bath contains ##STR1## where A 1 -A 9 is H or an alkyl radical with low C number, R 1 -R 9 is H, OH or an alkyl radical with low C number, X is a halogen or SO 4 and n is the valency of X. Preferred solid lubricants are polytetrafluoroethylene, graphite, graphite fluoride or molybdenumdisulfide.
Inventors
- 👤 Jean-Francois Paulet
- 👤 Jean-Claude Puippe
- 👤 Heinz Steup
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 11:59
CPC Classifications
C; C25; C25D; C25D15/00; C25D15/02
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
87 words
An aqueous electroplating bath containing solid lubricant particles and a water soluble surfactant which, at the pH of the electroplating bath, exhibits cationic properties, for simultaneous deposition of at least one metal and a permanently lubricating solid lubricant, in which, the water-soluble, cationic surfactant is a compound consisting essentially of ##STR7## where A 1 -A 9 is H or an alkyl radical, R 1 -R 9 is H, OH or an alkyl radical, X is a halogen or SO 4 and n is the valency of X.
Claim 2
Dependent Claim
87 words
An aqueous electroplating bath containing solid lubricant particles and a water soluble surfactant which, at the pH of the electroplating bath, exhibits cationic properties, for simultaneous deposition of at least one metal and a permanently lubricating solid lubricant, in which, the water-soluble, cationic surfactant is a compound consisting essentially of ##STR7## where A 1 -A 9 is H or an alkyl radical, R 1 -R 9 is H, OH or an alkyl radical, X is a halogen or SO 4 and n is the valency of X.
Claim 3
Dependent Claim
19 words
Electroplating bath according to claim 1, in which the water-soluble, cationic surfactant is a compound consisting essentially of ##STR8##
Claim 4
Dependent Claim
20 words
Electroplating bath according to claim 1, in which the water soluble, cationic surfactant is a compound consisting essentially of ##STR9##
Claim 5
Dependent Claim
11 words
Electroplating bath according to claim 1, in which X is Br.
Claim 6
Dependent Claim
11 words
Electroplating bath according to claim 1, in which X is Cl.
Claim 7
Dependent Claim
24 words
Electroplating bath according to claim 1, in which the solid lubricant is selected from the group consisting of polytetrafluorethylene, graphite, graphite fluoride and molybdenumdisulfide.
Claim 8
Dependent Claim
17 words
Electroplating bath according to claim 6, in which the solid lubricant particles are 3-6 μm in size.
Claim 9
Dependent Claim
24 words
Electroplating bath according to claim 1, in which the bath additionally contains at least one of phosphoric acid and a salt of phosphoric acid.
Claim 10
Dependent Claim
24 words
Electroplating bath according to claim 1, in which the bath additionally contains at least one of hypophosphoric acid and a salt of hypophosphoric acid.
Claim 11
Dependent Claim
21 words
Electroplating bath according to claim 1, wherein said bath is used to manufacture cobalt-nickel-phosphorus coatings having solid lubricant particles incorporated therein.
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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) | 1991-03-01 | 1991-08-31 | 1992-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-03-01 | 1995-08-31 | 1996-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-03-01 | 1999-08-31 | 2000-03-01 | $7700.00 | Window Closed / Lapsed |