| Kojima Chemicals Co., Ltd. Patent applications |
| Patent application number | Title | Published |
|---|
| 20120118196 | ELECTROLESS PALLADIUM PLATING SOLUTION - Disclosed is an electroless palladium plating solution which can form a plating layer having excellent soldering properties onto electronic components and the like and excellent wire bonding properties. The electroless palladium plating solution comprises a palladium compound, an amine compound, an inorganic sulfur compound and a reducing agent, wherein a combination of hypophosphorous acid or a hypophosphorous acid compound and formic acid or a formic acid compound is used as the reducing agent, and wherein the palladium compound, the amine compound, the inorganic sulfur compound, the hypophosphorous acid compound, and formic acid or the formic acid compound are contained in amounts of 0.001 to 0.1 mole/l, 0.05 to 5 mole/l, 0.01 to 0.1 mole/l, 0.05 to 1.0 mole/l and 0.001 to 0.1 mole/l, respectively. The electroless palladium plating solution is characterized by having excellent soldering properties and excellent wire bonding properties. | 05-17-2012 |
| 20100199882 | Electroless Pure Palladium Plating Solution - An electroless pure palladium plating solution capable of forming pure palladium plating films having less plating film variations is provided. The electroless pure palladium plating solution comprises an aqueous solution containing (a) 0.001 to 0.5 mol/liter of a water-soluble palladium compound, (b) 0.005 to 10 mol/liter of at least two members selected from the group consisting of aliphatic carboxylic acids and water-soluble salts thereof, (c) 0.005 to 10 mol/liter of phosphoric acid and/or a phosphate, and (d) 0.005 to 10 mol/liter of sulfuric acid and/or a sulfate. | 08-12-2010 |
| 20090044720 | ELECTROLESS PALLADIUM PLATING SOLUTION - [Object] To provide, an electroless palladium plating solution capable of forming a pure palladium plating film directly on an electroless nickel plating film without (pre)treatment such as substituted palladium plating treatment or the like, which pure palladium plating film has good adhesion and small variations in plating film thickness. | 02-19-2009 |
