Fluorine-containing resin composition

Abstract

In 100 parts by weight of a composition, from 2 to 89 parts by weight of a fluorinated polymer having a fluorine content of at least 65 wt %, from 97 to 10 parts by weight of a non-fluorinated polymer and from 1 to 35 parts by weight of a dispersing agent having a carboxylic acid group or its derivative, or a sulfonic acid group or its derivative, are blended.

1 . A fluorine-containing resin composition which comprises, in 100 parts by weight of the composition, from 2 to 89 parts by weight of a fluorinated polymer (a) which has a fluorine content of at least 65 wt % in its polymer molecule, from 97 to 10 parts by weight of a polymer (b) containing no fluorine, and from 1 to 35 parts by weight of a functional group-containing fluorinated compound (c) having, as a functional group, a carboxylic acid group or its derivative, or a sulfonic acid group or its derivative, in its molecule.  
     
     
         2 . The fluorine-containing resin composition according to    claim 1   , wherein said fluorinated polymer (a) is any one of a homopolymer of a fluoroolefin selected from tetrafluoroethylene and chlorotrifluoroethylene, a copolymer of a fluoroolefin with a perfluoro(alkyl vinyl ether), and a copolymer of a fluoroolefin with hexafluoropropylene.  
     
     
         3 . The fluorine-containing resin composition according to    claim 1   , wherein said fluorinated polymer (a) is a copolymer of tetrafluoroethylene with a perfluoro(alkyl vinyl ether).  
     
     
         4 . The fluorine-containing resin composition according to any one of    claims 1    to    3   , wherein said polymer (b) containing no fluorine is any one of a polyetherimide, a polyamidoimide, a polybismaleimide, a thermoplastic polyimide and a polyetherslufone.  
     
     
         5 . The fluorine-containing resin composition according to any one of    claims 1    to    4   , wherein said functional group-containing fluorinated compound (c) is a functional group-containing fluorinated polymer containing polymer units based on an ethylene type monomer having, as a functional group, at least one type of a carboxylic acid group or its derivative, or a sulfonic acid group or its derivative, in its molecule.  
     
     
         6 . The fluorine-containing resin composition according to any one of    claims 1    to    5   , wherein said functional group-containing fluorinated compound (c) is a functional group-containing fluorinated polymer containing polymer units based on an ethylene type monomer having, as a functional group, at least one type of a carboxylic acid group or its derivative, or a sulfonic acid group or its derivative, in its molecule, and polymer units based on an ethylene type fluorinated monomer.  
     
     
         7 . A fluorine-containing resin composition which comprises, in 100 parts by weight of the composition, from 10 to 44 parts by weight of a copolymer (a′) of tetrafluoroethylene with a perfluoro(alkyl vinyl ether), from 55 to 89 parts by weight of a polyetherimide (b′), and from 1 to 35 parts by weight of a functional group-containing fluorinated polymer (c) containing polymer units based on an ethylene type monomer having, as a functional group, at least one type of a carboxylic acid group or its derivative, or a sulfonic acid group or its derivative, in its molecule.