Surface modifier for polyimide resin and surface-modifying method for polyimide resin

Abstract

The present invention relates to a polyimide resin surface modifier which modifies the surface of a polyimide resin to permit easy absorption of metal ions, and a surface-modifying method for polyimide resins using the same. The surface modifier contains an alkali component, an organic solvent having hydroxy groups and a boiling point of 120° C. or higher, and a water content of 0-10% by weight. The surface-modifying method includes a printing process wherein a predetermined pattern is printed on the surface of a polyimide resin substrate using the polyimide resin surface modifier, an organic solvent-removing process wherein an organic solvent in the polyimide resin surface modifier pattern-printed on the surface of said polyimide resin substrate is removed and a water-treatment process wherein said polyimide resin surface modifier after removing the organic solvent is brought into contact with water.

1 . A polyimide resin surface modifier which contains an alkali component and an organic solvent having hydroxy groups and a boiling point of 120° C. or higher, wherein the water content is 0-10% by weight. 
     
     
         2 . The polyimide resin surface modifier according to  claim 1 , which further contains a water-soluble polymer compound. 
     
     
         3 . The polyimide resin surface modifier according to  claim 1 , wherein said alkali component is selected from the group consisting of an alkali metal hydroxide and a quaternary ammonium hydroxide. 
     
     
         4 . The polyimide resin surface modifier according to  claim 1 , wherein said organic solvent is an alcoholic compound. 
     
     
         5 . The polyimide resin surface modifier according to  claim 4 , wherein said alcoholic compound is selected from the group consisting of hydrocarbon-type alcohols, alkylene glycols and glycol ethers. 
     
     
         6 . The polyimide resin surface modifier according to  claim 2 , wherein said water-soluble polymer compound is selected from the group consisting of polyvinyl pyrrolidone, polyvinyl alcohol and carboxy methylcellulose. 
     
     
         7 . A surface-modifying method for a polyimide resin which comprises
 a printing process wherein a predetermined pattern is printed on the surface of a polyimide resin substrate using a polyimide resin surface modifier containing an alkali component and an organic solvent having hydroxy groups and a boiling point of 120° C. or higher wherein the water content is 0-10% by weight,   an organic solvent-removing process wherein an organic solvent in the polyimide resin surface modifier pattern-printed on the surface of said polyimide resin substrate is removed and   a water-treatment process wherein said polyimide resin surface modifier after removing the organic solvent is brought into contact with water.   
     
     
         8 . The surface-modifying method for a polyimide resin according to  claim 7 , wherein said polyimide resin surface modifier further contains a water-soluble polymer compound. 
     
     
         9 . The surface-modifying method for a polyimide resin according to  claim 7 , wherein said printing is carried out by a screen printing method. 
     
     
         10 . The surface-modifying method for a polyimide resin according to  claim 7 , wherein said printing is carried out by an inkjet printing method. 
     
     
         11 . The polyimide resin surface modifier according to  claim 2 , wherein said alkali component is selected from the group consisting of an alkali metal hydroxide and a quaternary ammonium hydroxide. 
     
     
         12 . The polyimide resin surface modifier according to  claim 2 , wherein said organic solvent is an alcoholic compound. 
     
     
         13 . The polyimide resin surface modifier according to  claim 12 , wherein said alcoholic compound is selected from the group consisting of hydrocarbon-type alcohols, alkylene glycols and glycol ethers. 
     
     
         14 . The surface-modifying method for a polyimide resin according to  claim 8 , wherein said printing is carried out by a screen printing method. 
     
     
         15 . The surface-modifying method for a polyimide resin according to  claim 8 , wherein said printing is carried out by an inkjet printing method.