EP0005890A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Process for depositing composite coatings containing inorganic particles from an electroplating bath
Assignee: Akzo NV
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Filing: 1979-06-05
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Granted: —
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Expires: 1999-06-05
Abstract
Abstract Solid inorganic particles and metals are codeposited from electroplating baths to form a coating of a very homogeneous structure, said positively charged resin particles, which have a particle size of less than 300 µm, being kept dispersed in said baths in the presence of a cationic fluorocarbon surfactant in at least the same weight ratio to the particles in the bath liquid as in an 0,005 N KN0 3 -solution In which the particles assume a zeta-potential of at least +40 mV with the exclusive use of said cationic fluorocarbon compound.
Inventors
- 👤 Eduard Zuurdeeg
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-03 10:56
CPC Classifications
C; C25; C25D; C25D15/00; C25D15/02
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
119 words
A process for the codeposition from an electroplating bath of a metal and solid inorganic particles on an object acting as cathode, which particles are kept suspended in the bath liquid in the presence of a surfactant and have an average size of less than 300 µm and are used in a concentration of 10 to 150 grammes per litre of bath liquid, characterized in that as surfactant there is used a cationic fluorocarbon compound in at least the same weight ratio to the particles in the bath liquid as in an 0,005 N KNO 3 - solution in which the particles assume a zeta-potential of at least +40 mV with the exclusive use of said cationic fluorocarbon compound.
Claim 2
Dependent Claim
119 words
A process for the codeposition from an electroplating bath of a metal and solid inorganic particles on an object acting as cathode, which particles are kept suspended in the bath liquid in the presence of a surfactant and have an average size of less than 300 µm and are used in a concentration of 10 to 150 grammes per litre of bath liquid, characterized in that as surfactant there is used a cationic fluorocarbon compound in at least the same weight ratio to the particles in the bath liquid as in an 0,005 N KNO 3 - solution in which the particles assume a zeta-potential of at least +40 mV with the exclusive use of said cationic fluorocarbon compound.
Claim 3
Dependent Claim
47 words
. 2. A process according to claim 1, characterized in that the amount of cationic fluorocarbon compound is so chosen that in an 0,005 N KN03 solution the particles assume a zeta-potential of at least + 60 mV with the exclusive use of said cationic fluorocarbon compound
Claim 4
Dependent Claim
27 words
A process according to claim 1 or 2, characterized in that as cationic fluorocarbon compound there is used a compound having one of the following structural formulae:
Claim 5
Dependent Claim
27 words
4 A process according to any one of the preceding claims, characterized in that besides solid inorganic particles simultaneously solid particles of a different kind are deposited.
Claim 6
Dependent Claim
19 words
A process according to claim 4, characterized in that the different kind of solid particles are inorganic particles, too.
Claim 7
Dependent Claim
18 words
A process according to claim 4, characterized in that the different .kind of solid particles are organic particles.
References Cited (Backward Citations)
No citation records indexed.
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