Electroplating method
First Claim
1. In the method of electrolytically depositing on the surface of a substrate metal a layer of a metal having a plurality of discrete particles of a finely divided solid non-metallic material uniformly dispersed throughout said layer, said metal layer and said particles being co-deposited from an aqueous electrolyte solution containing said metal in solution and said particles in suspension therein, said electrolyte solution containing a surface active agent deposition promoter for the non-metallic material and being agitated to maintain the particles uniformly in suspension therein, the improvement which comprises employing as said deposition promoter a surface active agent selected from the group having the chemical structure:
- ##STR4## Where R1 is an alkyl, alkene or alkyne radical having from 6 to 22 carbon atoms,R2 is an alkyl or hydroxyalkyl radical having from 1 to 4 carbon atoms, andR3 is an alkyl or hydroxyalkyl radical having from 1 to 4 carbon atoms.
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Accused Products
Abstract
A layer of metal having a plurality of discrete particles of a finely divided solid non-metallic material uniformly dispersed throughout the metal layer is electrodeposited onto the surface of a substrate metal by first applying a tertiary amine oxide surfactant to the surface of the particles of finely divided non-metallic solid material, or by first introducing the said tertiary amine oxide surfactant into the electrolyte solution. The said particles and the said metal are then co-deposited onto the said substrate from an aqueous electrolyte solution containing metaliferous cations of the said metal in solution and the said particles in suspension therein. Specifically, the tertiary amine oxide surfactant employed is selected from the group having the chemical structure: ##STR1## Where R1 is an alkyl, alkene or alkyne radical having from 6 to 22 carbon atoms,
R2 is an alkyl or hydroxyalkyl radical having from 1 to 4 carbon atoms, and
R3 is alkyl or hydroxyalkyl radical having from 1 to 4 carbon atoms.
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Citations
11 Claims
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1. In the method of electrolytically depositing on the surface of a substrate metal a layer of a metal having a plurality of discrete particles of a finely divided solid non-metallic material uniformly dispersed throughout said layer, said metal layer and said particles being co-deposited from an aqueous electrolyte solution containing said metal in solution and said particles in suspension therein, said electrolyte solution containing a surface active agent deposition promoter for the non-metallic material and being agitated to maintain the particles uniformly in suspension therein, the improvement which comprises employing as said deposition promoter a surface active agent selected from the group having the chemical structure:
- ##STR4## Where R1 is an alkyl, alkene or alkyne radical having from 6 to 22 carbon atoms,
R2 is an alkyl or hydroxyalkyl radical having from 1 to 4 carbon atoms, and R3 is an alkyl or hydroxyalkyl radical having from 1 to 4 carbon atoms. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
- ##STR4## Where R1 is an alkyl, alkene or alkyne radical having from 6 to 22 carbon atoms,
Specification