Patent ID: 6156385
Filing Date: 2000-12-05
Classification: C23C,H05K

Abstract:
A process for electroless plating including the steps of forming a coating film on which electroless plating is performed, activating said coating film, imparting a catalyst to said coating film, activating said catalyst, and performing electroless plating, characterized in that said coating film is formed from any one of the following four resin compositions:(1) a resin composition composed of a compound having a basic bond, an adhesive polymer which has a carbon--carbon double bond in the main chain, and a polybasic acid having a carbon--carbon double bond;(2) a resin composition composed of an adhesive polymer dense with basic bonds, and a polybasic acid compatible with said polymer or a monobasic acid having a carbon--carbon double bond;(3) a resin composition composed of a resin component which gives rise to a basic nitrogen--hydrogen bond upon curing reaction, and a polybasic acid having a carbon--carbon double bond; and(4) a resin composition composed of a resin component which gives rise to a basic nitrogen--hydrogen bond upon curing reaction, an adhesive polymer which has a carbon--carbon double bond in the main chain, and a polybasic acid having a carbon--carbon double bond,the said step of forming a coating film is consisted of preparing a solution of any one of the four resin compositions (1), (2), (3), and (4), applying the solution to a substrate, and drying or curing the coated solution, thereby forming a water-insoluble film of amphoteric resin composition,the said step of activating the coating film is consisted of treating the cured film with a weak alkaline solution containing a neutral detergent, thereby converting acid radical or acid anhydride in the coating film into an alkali metal salt, andthe said step of imparting a catalyst to the coating film consists of treating the activated coating film with an acidic solution containing Pd ions, thereby causing Pd ions to be absorbed to the coating film.