Catalytic metal of reduced particle size
First Claim
1. A functional catalytic adsorbate for electroless metal deposition consisting essentially of a reduced platinum family metal complexed with a water soluble or dispersible polymer where the reduced platinum family metal is characterized by an average maximum dimension not exceeding 500 Angstroms and the polymer is one that complexes with the ions of the catalytic metal prior to reduction and formation of the catalytic adsorbate, said catalytic adsorbate being suspended in an aqueous medium consisting essentially of water.
1 Assignment
0 Petitions
Accused Products
Abstract
A catalytic adsorbate suspended in an aqueous solution comprising reduced catalytic metal on an organic suspending agent where the reduced catalytic metal has a maximum dimension not exceeding 500 angstroms and the organic suspending agent is one capable of complexing with ions of the catalytic metal. The catalytic adsorbate is useful for the electroless metal deposition of substrates that are non-catalytic to electroless metal deposition.
69 Citations
24 Claims
- 1. A functional catalytic adsorbate for electroless metal deposition consisting essentially of a reduced platinum family metal complexed with a water soluble or dispersible polymer where the reduced platinum family metal is characterized by an average maximum dimension not exceeding 500 Angstroms and the polymer is one that complexes with the ions of the catalytic metal prior to reduction and formation of the catalytic adsorbate, said catalytic adsorbate being suspended in an aqueous medium consisting essentially of water.
- 17. A functional catalytic adsorbate for electroless metal deposition consisting essentially of reduced palladium complexed with polyvinyl pyrrolidone where the reduced palladium is characterized by an average maximum dimension not exceeding 500 Angstroms, the suspension has a pH not exceeding 5.5 and the concentration of palladium varies between 10 and 2,000 parts per million parts of solution, said catalytic adsorbate being suspended in an aqueous medium consisting essentially of water.
Specification