Material for printed circuit board, metal laminate, methods for producing them, and method for producing printed circuit board

Abstract

A material for a printed circuit board, which is a film composed of a fluorinated resin layer, where the fluorinated resin layer contains a composition containing a fluorinated copolymer having at least one functional group selected from a carbonyl group-containing group, a hydroxy group, an epoxy group and an isocyanate group, has a melt flow rate of at most 15 g/10 min measured at 372° C. under a load of 49N, and has a storage elastic modulus of at least 650 MPa.

1 . A material for a printed circuit board, which is a film consisting of a fluorinated resin layer, wherein the fluorinated resin layer comprises a composition comprising a fluorinated copolymer having at least one functional group selected from the group consisting of a carbonyl group-containing group, a hydroxy group, an epoxy group and an isocyanate group, has a melt flow rate of at most 15 g/10 min measured at 372° C. under a load of 49N, and has a storage elastic modulus of at least 650 MPa. 
     
     
         2 . The material according to  claim 1 , wherein the fluorinated copolymer has at least a carbonyl group-containing group as the functional group, and the carbonyl group-containing group is at least one selected from the group consisting of a group having a carbonyl group between carbon atoms in a hydrocarbon group, a carbonate group, a carboxy group, a haloformyl group, an alkoxycarbonyl group and an acid anhydride residue. 
     
     
         3 . The material according to  claim 1 , wherein the content of the functional group is from 10 to 60,000 groups per 1×10 6  carbon atoms in the main chain of the fluorinated copolymer. 
     
     
         4 . A material for a printed circuit board, which is an adhesive film having a fluorinated resin layer directly laminated on at least one side of a heat resistant resin film, wherein
 the fluorinated resin layer comprises a composition comprising a fluorinated copolymer having at least one functional group selected from the group consisting of a carbonyl group-containing group, a hydroxy group, an epoxy group and an isocyanate group, and has a melt flow rate of at most 15 g/10 min measured at 372° C. under a load of 49N, and   the linear expansion coefficient of the material for a printed circuit board at from 150 to 200° C. is within a range of from 0 to 25 ppm/° C.   
     
     
         5 . The material according to  claim 4 , wherein the fluorinated copolymer has at least a carbonyl group-containing group as the functional group, and the carbonyl group-containing group is at least one selected from the group consisting of a group having a carbonyl group between carbon atoms in a hydrocarbon group, a carbonate group, a carboxy group, a haloformyl group, an alkoxycarbonyl group and an acid anhydride residue. 
     
     
         6 . The material according to  claim 4 , wherein the content of the functional group is from 10 to 60,000 groups per 1×10 6  carbon atoms in the main chain of the fluorinated copolymer. 
     
     
         7 . A metal laminate comprising an adhesive film having a fluorinated resin layer directly laminated on at least one side of a heat resistant resin film, and a metal layer directly laminated on the at least one fluorinated resin layer, wherein
 the fluorinated resin layer comprises a composition comprising a fluorinated copolymer having at least one functional group selected from the group consisting of a carbonyl group-containing group, a hydroxy group, an epoxy group and an isocyanate group, and has a melt flow rate of at most 15 g/10 min. measured at 372° C. under a load of 49 N, and   the linear expansion coefficient of the adhesive film at from 150 to 200° C. is within a range of from 0 to 25 ppm/° C.   
     
     
         8 . The material according to  claim 7 , wherein the fluorinated copolymer has at least a carbonyl group-containing group as the functional group, and the carbonyl group-containing group is at least one selected from the group consisting of a group having a carbonyl group between carbon atoms in a hydrocarbon group, a carbonate group, a carboxy group, a haloformyl group, an alkoxycarbonyl group and an acid anhydride residue. 
     
     
         9 . The material according to  claim 7 , wherein the content of the functional group is from 10 to 60,000 groups per 1×10 6  carbon atoms in the main chain of the fluorinated copolymer.