Carbon Nanotube Composition, Composite Having a Coated Film Composed of the Same, and Their Production Methods

Abstract

The object of the present invention is to provide a carbon nanotube composition that does not impair the characteristics of the carbon nanotubes itself, allows the carbon nanotubes to be dispersed or solubilized in a solvent, does not cause separation or aggregation of the carbon nanotubes even during long-term storage, has superior electrical conductivity, film formability and moldability, can be easily coated or covered onto a base material, and the resulting coated film has superior moisture resistance, weather resistance and hardness; a composite having a coated film composed thereof; and, their production methods. In order to achieve this object, the present invention provides a carbon nanotube composition that contains a conducting polymer (a) or heterocyclic compound trimer (i), a solvent (b) and carbon nanotubes (c), and may additionally contain a high molecular weight compound (d), a basic compound (e), a surfactant (f), a silane coupling agent (g) and colloidal silica (h) as necessary; a composite having a coated film composed of the composition; and, their production methods.

1 . A carbon nanotube composition that contains a conducting polymer (a), a solvent (b) and carbon nanotubes (c). 
     
     
         2 . A carbon nanotube composition that contains a heterocyclic compound trimer (i), a solvent (b) and carbon nanotubes (c). 
     
     
         3 . A carbon nanotube composition according to  claim 1 , wherein the carbon nanotube composition additionally contains a high molecular weight compound (d). 
     
     
         4 . A carbon nanotube composition according to  claim 1 , wherein the carbon nanotube composition additionally contains a basic compound (e). 
     
     
         5 . A carbon nanotube composition according to  claim 1 , wherein the carbon nanotube composition additionally contains a surfactant (f). 
     
     
         6 . (canceled) 
     
     
         7 . A carbon nanotube composition according to  claim 1 , wherein the carbon nanotube composition additionally contains a colloidal silica (h). 
     
     
         8 . A carbon nanotube composition according to  claim 1 , wherein the conducting polymer (a) is a water soluble conducting polymer. 
     
     
         9 . A carbon nanotube composition according to  claim 8 , wherein the water soluble conducting polymer has at least one of a sulfonic acid group and a carboxyl group. 
     
     
         10 . A carbon nanotube composition according to  claim 9 , wherein the water soluble conducting polymer having at least one of a sulfonic acid group and a carboxyl group is a water soluble conducting polymer that contains 20 to 100% of at least one type of the repeating units selected from the following formulas (2) to (10) relative to the total number of repeating units throughout the entire polymer: 
       
         
           
           
               
               
           
         
       
       wherein in the formula (2) R 1  and R 2  are respectively and independently selected from the group consisting of H, —SO 3   − , —SO 3 H, —R 35 SO 3   − , —R 35 SO 3 H, —OCH 3 , —CH 3 , —C 2 H 5 , —F, —Cl, —Br, —I, —N(R 35 ) 2 , —NHCOR 35 , —OH, —O − , —SR 35 , —OR 3 , —OCOR 35 , —NO 2 , —COOH, R 35 COOH, —COOR 35 , —COR 35 , —CHO and —CN, where R 35  represents an alkyl, aryl or aralkyl group having 1 to 24 carbon atoms or an alkylene, arylene or aralkylene group having 1 to 24 carbon atoms, and at least one of R 1  and R 2  is a group selected from the group consisting of —SO 3   − , —SO 3 H, —R 35 SO 3   − , —R 35 SO 3 H, —COOH and —R 35 COOH; 
       
         
           
           
               
               
           
         
       
       wherein in the formula (3) R 3  and R 4  are respectively and independently selected from the group consisting of H, —SO 3   − , —SO 3 H, —R 35 SO 3   − , —R 35 SO 3 H, —OCH 3 , —CH 3 , —C 2 H 5 , —F, —Cl, —Br, —I, —N(R 35 ) 2 , —NHCOR 35 , —OH, —O − , —SR 35 , —OR 35 , —OCOR 35 , —NO 2 , —COOH, —R 35 COOH, —COOR 35 , —COR 35 , —CHO and —CN, where R 35  represents an alkyl, aryl or aralkyl group having 1 to 24 carbon atoms or an alkylene, arylene or aralkylene group having 1 to 24 carbon atoms, and at least one of R 3  and R 4  is a group selected from the group consisting of —SO 3   − , —SO 3 H, —R 35 SO 3   − , —R 35 SO 3 H, —COOH and —R 35 COOH; 
       
         
           
           
               
               
           
         
       
       wherein in the formula (4) R 5  to R 8  are respectively and independently selected from the group consisting of H, —SO 3   − , —SO 3 H, —R 35 SO 3   − , —R 35 SO 3 H, —OCH 3 , —CH 3 , —C 2 H 5 , —F, —Cl, —Br, —I, —N(R 35 ) 2 , —NHCOR 35 , —OH, —O − , —SR 35 , —OR 35 , —OCOR 35 , —NO 2 , —COOH R 35 COOH, —COOR 35 , —COR 35 , —CHO and —CN, where R 35  represents an alkyl, aryl or aralkyl group having 1 to 24 carbon atoms or an alkylene, arylene or aralkylene group having 1 to 24 carbon atoms, and at least one of R 5  to R 8  is a group selected from the group consisting of —SO 3   − , —SO 3 H, —R 35 SO 3   − , —R 35 SO 3 H, —COOH and —R 35 COOH; 
       
         
           
           
               
               
           
         
       
       wherein in the formula (5) R 9  to R 13  are respectively and independently selected from the group consisting of H, —SO 3   − , —SO 3 H, —R 35 SO 3   − , —R 35 SO 3 H, —OCH 3 , —CH 3 , —C 2 H 5 , —F, —Cl, —Br, —I, —N(R 35 ) 2 , —NHCOR 35 , —OH, —O − , —SR 35 , —OR 35 , —OCOR 35 , —NO 2 , —COOH, R 35 COOH, —COOR 35 , —COR 35 , —CHO and —CN, where R 35  represents an alkyl, aryl or aralkyl group having 1 to 24 carbon atoms or an alkylene, arylene or aralkylene group having 1 to 24 carbon atoms, and at least one of R 9  to R 13  is a group selected from the group consisting of —SO 3   − , —SO 3 H, —R 35 SO 3   − , —R 35 SO 3 H, —COOH and —R 35 COOH; 
       
         
           
           
               
               
           
         
       
       wherein in the formula (6) R 14  is selected from the group consisting of —SO 3   − , —SO 3 H, —R 42 SO 3   − , —R 42 SO 3 H, —COOH and —R 42 COOH, where R 42  represents an alkylene, arylene or aralkylene group having 1 to 24 carbon atoms; 
       
         
           
           
               
               
           
         
       
       wherein in the formula (7) R 52  to R 57  are respectively and independently selected from the group consisting of H, —SO 3   − , —SO 3 H, —R 35 SO 3   − , —R 35 SO 3 H, —OCH 3 , —CH 3 , —C 2 H 5 , —F, —Cl, —Br, —I, —N(R 35 ) 2 , —NHCOR 35 , —OH, —O − , —SR 35 , —OR 35 , —OCOR 35 , —NO 2 , —COOH, R 35 COOH, —COOR 35 , —COR 35 , —CHO and —CN, where R 35  represents an alkyl, aryl or aralkyl group having 1 to 24 carbon atoms or an alkylene, arylene or aralkylene group having 1 to 24 carbon atoms, at least one of R 52  to R 57  is a group selected from the group consisting of —SO 3   − , —SO 3 H, —R 35 SO 3   − , —R 35 SO 3 H, —COOH and —R 35 COOH, Ht represents a heteroatom group selected from the group consisting of NR 82 , S, O, Se and Te, where R 82  represents hydrogen, a linear or branched alkyl group having 1 to 24 carbon atoms, or a substituted or non-substituted aryl group having 1 to 24 carbon atoms, the hydrocarbon chains of R 52  to R 57  mutually bond at arbitrary locations and may form a bivalent chain that forms at least one cyclic structure of saturated or unsaturated hydrocarbons of a 3 to 7-member ring together with the carbon atoms substituted by the groups, the cyclic bonded chain formed in this manner may contain a carbonyl ether, ester, amide, sulfide, sulfinyl, sulfonyl or imino bond at arbitrary locations, and n represents the number of condensed rings sandwiched between a hetero ring and a benzene ring having substituents R 53  to R 56 , and is 0 or an integer of 1 to 3; 
       
         
           
           
               
               
           
         
       
       wherein in the formula (8) R 58  to R 66  are respectively and independently selected from the group consisting of H, —SO 3   − , —SO 3 H, —R 35 SO 3   − , —R 35 SO 3 H, —OCH 3 , —CH 3 , —C 2 H 5 , —F, —Cl, —Br, —I, —N(R 35 ) 2 , —NHCOR 35 , —OH, —O − , —SR 35 , —OR 35 , —OCOR 35 , —NO 2 , —COOH, —R 35 COOH, —COOR 35 , —COR 35 , —CHO and —CN, where R 35  represents an alkyl, aryl or aralkyl group having 1 to 24 carbon atoms or an alkylene, arylene or aralkylene group having 1 to 24 carbon atoms, at least one of R 58  to R 66  is a group selected from the group consisting of —SO 3   − , —SO 3 H, —R 35 SO 3   − , —R 35 SO 3 H, —COOH and —R 35 COOH, and n represents the number of condensed rings sandwiched between a benzene ring having substituents R 58  and R 59  and a benzene ring having substituents R 61  to R 64 , and is 0 or an integer of 1 to 3; 
       
         
           
           
               
               
           
         
       
       wherein in the formula (9) R 67  to R 76  are respectively and independently selected from the group consisting of H, —SO 3   − , —SO 3 H, —R 35 SO 3   − , —R 35 SO 3 H, —OCH 3 , —CH 3 , —C 2 H 5 , —F, —Cl, —Br, —I, —N(R 35 ) 2 , —NHCOR 35 , —OH, —O − , —SR 35 , —OR 35 , —OCOR 35 , —NO 2 , —COOH R 35 COOH, —COOR 35 , —COR 35 , —CHO and —CN, where R 35  represents an alkyl, aryl or aralkyl group having 1 to 24 carbon atoms or an alkylene, arylene or aralkylene group having 1 to 24 carbon atoms, at least one of R 67  to R 76  is a group selected from the group consisting of —SO 3   − , —SO 3 H, —R 35 SO 3   − , —R 35 SO 3 H, —COOH and —R 35 COOH, and n represents the number of condensed rings sandwiched between a benzene ring having substituents R 67  to R 69  and a benzoquinone ring, and is 0 or an integer of 1 to 3; and, 
       
         
           
           
               
               
           
         
       
       wherein in the formula (10) R 77  to R 81  are respectively and independently selected from the group consisting of H, —SO 3   − , —SO 3 H, —R 35 SO 3   − , —R 35 SO 3 H, —OCH 3 , —CH 3 , —C 2 H 5 , —F, —Cl, —Br, —I, —N(R 35 ) 2 , —NHCOR 35 , —OH, —O − , —SR 35 , —OR 35 , —OCOR 35 , —NO 2 , —COOH, R 35 COOH, —COOR 35 , —COR 35 , —CHO and —CN, where R 35  represents an alkyl, aryl or aralkyl group or alkylene, arylene having 1 to 24 carbon atoms or an aralkylene group having 1 to 24 carbon atoms, at least one of R 77  to R 81  is a group selected from the group consisting of —SO 3   − , —SO 3 H, —R 35 SO 3   − , —R 35 SO 3 H, —COOH and —R 35 COOH, Xa −  is at least one type of anion selected from the group of anions having a valence of 1 to 3 consisting of a chlorine ion, bromine ion, iodine ion, fluorine ion, nitrate ion, sulfate ion, hydrogensulfate ion, phosphate ion, borofluoride ion, perchlorate ion, thiocyanate ion, acetate ion, propionate ion, methane sulfonate ion, p-toluene sulfonate ion, trifluoroacetate ion and trifluoromethane sulfonate ion, a represents the ion valence of X and is an integer of 1 to 3, and p represents the doping ratio and has a value of 0.001 to 1. 
     
     
         11 . A carbon nanotube composition according to  claim 9 , wherein the water soluble conducting polymer having at least one of a sulfonic acid group and a carboxyl group is a water soluble conducting polymer that contains 20 to 100% of the repeating unit represented by the following formula (11) relative to the total number of repeating units throughout the entire polymer: 
       
         
           
           
               
               
           
         
       
       wherein in the formula (1) y represents an arbitrary number such that 0<y<1, R 15  to R 32  are respectively and independently selected from the group consisting of H, —SO 3   − , —SO 3 H, —R 35 SO 3   − , —R 35 SO 3 H, —OCH 3 , —CH 3 , —C 2 H 5 , —F, —Cl, —Br, —I, —N(R 35 ) 2 , —NHCOR 35 , —OH, —O − , —SR 35 , —OR 35 , —OCOR 35 , —NO 2 , —COOH, —R 35 COOH, —COOR 35 , —COR 35 , —CHO and —CN, where R 35  represents an alkyl, aryl or aralkyl group having 1 to 24 carbon atoms or an alkylene, arylene or aralkylene group having 1 to 24 carbon atoms, and at least one of R 15  to R 32  is a group selected from the group consisting of —SO 3   − , —SO 3 H, —R 35 SO 3   − , —R 35 SO 3 H, —COOH and —R 35 COOH. 
     
     
         12 . A carbon nanotube composition according to  claim 9 , wherein the water soluble conducting polymer having at least one of a sulfonic acid group and a carboxyl group is represented by the following formula (12): 
       
         
           
           
               
               
           
         
       
       wherein in the formula (12) R 33  represents one group selected from the group consisting of a sulfonic acid group, carboxyl group, their alkaline metal salts, ammonium salts and substituted ammonium salts, R 34  represents one group selected from the group consisting of a methyl group, ethyl group, n-propyl group, iso-propyl group, n-butyl group, iso-butyl group, sec-butyl group, tert-butyl group, dodecyl group, tetracosyl group, methoxy group, ethoxy group, n-propoxy group, iso-butoxy group, sec-butoxy group, tert-butoxy group, heptoxy group, hexoxy group, octoxy group, dodecoxy group, tetracoxy group, fluoro group, chloro group and bromo group, X represents an arbitrary number such that 0<X<1, and n represents the degree of polymerization and has a value of 3 or more. 
     
     
         13 . A carbon nanotube composition according to  claim 9 , wherein the water soluble conducting polymer having at least one of a sulfonic acid group and a carboxyl group is a water soluble conducting polymer obtained by polymerizing at least one of type of acidic group-substituted aniline represented by the following formula (13), its alkaline metal salt, ammonium salt and substituted ammonium salt, with an oxidizing agent in a solution containing a basic compound: 
       
         
           
           
               
               
           
         
       
       wherein in the formula (13) R 36  to R 41  are respectively and independently selected from the group consisting of H, —SO 3   − , —SO 3 H, —R 35 SO 3   − , —R 35 SO 3 H, —OCH 3 , —CH 3 , —C 2 H 5 , —F, —Cl, —Br, —I, —N(R 35 ) 2 , —NHCOR 35 , —OH, —O − , —SR 3 , —OR 3 , —OCOR 35 , —NO 2 , —COOH, —R 35 COOH, —COOR 35 , —COR 35 , —CHO and —CN, where R 35  represents an alkyl, aryl or aralkyl group having 1 to 24 carbon atoms or an alkylene, arylene or aralkylene group having 1 to 24 carbon atoms, and at least one of R 36  to R 41  is a group selected from the group consisting of —SO 3   − , —SO 3 H, —R 35 SO 3   − , —R 35 SO 3 H, —COOH and —R 35 COOH. 
     
     
         14 . A carbon nanotube composition according to  claim 9 , wherein the water soluble conducting polymer having at least one of a sulfonic acid group and a carboxyl group is a water soluble conducting polymer obtained by polymerizing at least one type of alkoxy group-substituted aminobenzene sulfonic acid, its alkaline metal salt, ammonium salt and substituted ammonium salt, with an oxidizing agent in a solution containing a basic compound. 
     
     
         15 . A carbon nanotube composition according to  claim 9 , wherein the water soluble conducting polymer having at least one of a sulfonic acid group and a carboxyl group is polyethylene dioxythiophene polystyrene sulfate. 
     
     
         16 . A carbon nanotube composition according to  claim 2 , wherein the composition contains a heterocyclic compound trimer (i) that is a heterocyclic compound trimer represented by the following formula (16): 
       
         
           
           
               
               
           
         
       
       wherein in the formula (16) R 101  to R 112  are substituents respectively and independently selected from the group consisting of hydrogen, a linear or branched alkyl group having 1 to 24 carbon atoms, a linear or branched alkoxy group having 1 to 24 carbon atoms, linear or branched acyl group having 2 to 24 carbon atoms, aldehyde group, carboxyl group, linear or branched carboxylic ester group having 2 to 24 carbon atoms, sulfonic acid group, linear or branched sulfonic ester group having 1 to 24 carbon atoms, cyano group, hydroxyl group, nitro group, amino group, amido group, dicyanovinyl group, alkyl (linear or branched alkyl group having 1 to 8 carbon atoms) oxycarbonylcyanovinyl group, nitrophenylcyanovinyl group and halogen group;
 Ht represents a heteroatom group selected from the group consisting of NR 154 , S, O, Se and Te, and R 154  represents a substituent selected from the group consisting of hydrogen and a linear or branched alkyl group having 1 to 24 carbon atoms; 
 X a−  represents at least one type of anion selected from the group consisting of anions having a valence of 1 to 3 consisting of a chlorine ion, bromine ion, iodine ion, fluorine ion, nitrate ion, sulfate ion, hydrogensulfate ion, phosphate ion, borofluoride ion, perchlorate ion, thiocyanate ion, acetate ion, propionate ion, methane sulfonate ion, p-toluene sulfonate ion, trifluoroacetate ion and trifluoromethane sulfonate ion; a represents the ion valence of X and is an integer of 1 to 3; and, m represents the doping ratio and has a value of 0 to 3.0. 
 
     
     
         17 . A carbon nanotube composition according to  claim 2 , wherein the composition contains a heterocyclic compound trimer (i) that is a heterocyclic compound trimer represented by the following general formula (17): 
       
         
           
           
               
               
           
         
       
       wherein in the formula (17) R 113  to R 124  represent substituents respectively and independently selected from the group consisting of hydrogen, a linear or branched alkyl group having 1 to 24 carbon atoms, linear or branched alkoxy group having 1 to 24 carbon atoms, linear or branched acyl group having 2 to 24 carbon atoms, aldehyde group, carboxyl group, linear or branched carboxylic ester group having 2 to 24 carbon atoms, sulfonic acid group, linear or branched sulfonic ester group having 1 to 24 carbon atoms, cyano group, hydroxyl group, nitro group, amino group, amido group, dicyanovinyl group, alkyl (linear or branched alkyl group having 1 to 8 carbon atoms) oxycarbonylcyanovinyl group, nitrophenylcyanovinyl group and halogen group; at least one of R 113  to R 124  is a cyano group, nitro group, amide group, halogen group, sulfonic acid group, and carboxyl group;
 Ht represents a heteroatom group selected from the group consisting of NR 154 , S, O, Se and Te, and R 154  represents a substituent selected from the group consisting of hydrogen and a linear or branched alkyl group having 1 to 24 carbon atoms; 
 X a−  represents at least one type of anion selected from the group consisting of anions having a valence of 1 to 3 consisting of a chlorine ion, bromine ion, iodine ion, fluorine ion, nitrate ion, sulfate ion, hydrogen sulfate ion, phosphate ion, borofluoride ion, perchlorate ion, thiocyanate ion, acetate ion, propionate ion, methane sulfonate ion, p-toluene sulfonate ion, trifluoroacetate ion and trifluoromethane sulfonate ion; a represents the ion valence of X and is an integer of 1 to 3; and, m represents the doping ratio and has a value of 0 to 3.0. 
 
     
     
         18 . A carbon nanotube composition according to  claim 2 , wherein the composition contains a heterocyclic compound trimer (i) that is a heterocyclic compound trimer represented by the following general formula (18): 
       
         
           
           
               
               
           
         
       
       wherein in the formula (18) R 125  to R 136  are substituents respectively and independently selected from the group consisting of hydrogen, a linear or branched alkyl group having 1 to 24 carbon atoms, linear or branched alkoxy group having 1 to 24 carbon atoms, linear or branched acyl group having 2 to 24 carbon atoms, aldehyde group, carboxylic acid group and its alkaline metal salt, ammonium salt and substituted ammonium salt, linear or branched carboxylic ester group having 2 to 24 carbon atoms, sulfonic acid group and its alkaline metal salt, ammonium salt and substituted ammonium salt, linear or branched sulfonic ester group having 1 to 24 carbon atoms, cyano group, hydroxyl group, nitro group, amino group, amido group, dicyanovinyl group, alkyl (linear or branched alkyl group having 1 to 8 carbon atoms)oxycarbonylcyanovinyl group, nitrophenylcyanovinyl group and halogen group;
 X a−  represents at least one type of anion selected from the group consisting of anions having a valence of 1 to 3 consisting of a chlorine ion, bromine ion, iodine ion, fluorine ion, nitrate ion, sulfate ion, hydrogen sulfate ion, phosphate ion, borofluoride ion, perchlorate ion, thiocyanate ion, acetate ion, propionate ion, methane sulfonate ion, p-toluene sulfonate ion, trifluoroacetate ion and trifluoromethane sulfonate ion; a represents the ion valence of X and is an integer of 1 to 3; and, m represents the doping ratio and has a value of 0 to 3.0. 
 
     
     
         19 . A carbon nanotube composition according to  claim 2 , wherein the composition contains a heterocyclic compound trimer (i) that is a heterocyclic compound trimer represented by the following general formula (19): 
       
         
           
           
               
               
           
         
       
       wherein in the formula (19) R 137  to R 148  are substituents respectively and independently selected from the group consisting of hydrogen, a linear or branched alkyl group having 1 to 24 carbon atoms, linear or branched alkoxy group having 1 to 24 carbon atoms, linear or branched acyl group having 2 to 24 carbon atoms, aldehyde group, carboxyl group, linear or branched carboxylic ester group having 2 to 24 carbon atoms, sulfonic acid group, linear or branched sulfonic ester group having 1 to 24 carbon atoms, cyano group, hydroxyl group, nitro group, amino group, amido group, dicyanovinyl group, alkyl (linear or branched alkyl group having 1 to 8 carbon atoms)oxycarbonylcyanovinyl group, nitrophenylcyanovinyl group and halogen group;
 Ht represents a heteroatom group selected from the group consisting of NR 154 , S, O, Se and Te, and R 154  represents a substituent selected from the group consisting of hydrogen and a linear or branched alkyl group having 1 to 24 carbon atoms; 
 X a−  represents at least one type of anion selected from the group consisting of anions having a valence of 1 to 3 consisting of a chlorine ion, bromine ion, iodine ion, fluorine ion, nitrate ion, sulfate ion, hydrogen sulfate ion, phosphate ion, borofluoride ion, perchlorate ion, thiocyanate ion, acetate ion, propionate ion, methane sulfonate ion, p-toluene sulfonate ion, trifluoroacetate ion and trifluoromethane sulfonate ion; a represents the ion valence of X and is an integer of 1 to 3; and, m represents the doping ratio and has a value of 0 to 3.0. 
 
     
     
         20 . A carbon nanotube composition according to  claim 2 , wherein the composition contains a heterocyclic compound trimer (i) that is a heterocyclic compound trimer obtained by reacting at least one type of heterocyclic compound represented by the following general formula (20) in a reaction mixture containing at least one type of oxidizing agent and at least one type of solvent: 
       
         
           
           
               
               
           
         
       
       wherein in the formula (20) R 150  to R 153  are substituents respectively and independently selected from the group consisting of hydrogen, a linear or branched alkyl group having 1 to 24 carbon atoms, linear or branched alkoxy group having 1 to 24 carbon atoms, linear or branched acyl group having 2 to 24 carbon atoms, aldehyde group, carboxyl group, linear or branched carboxylic ester group having 2 to 24 carbon atoms, sulfonic acid group, linear or branched sulfonic ester group having 1 to 24 carbon atoms, cyano group, hydroxyl group, nitro group, amino group, amido group, dicyanovinyl group, alkyl (linear or branched alkyl group having 1 to 8 carbon atoms)oxycarbonylcyanovinyl group, nitrophenylcyanovinyl group and halogen group; and,
 Ht represents a heteroatom group selected from the group consisting of NR 154 , S, O, Se and Te, and R 154  represents a substituent selected from the group consisting of hydrogen and a linear or branched alkyl group having 1 to 24 carbon atoms. 
 
     
     
         21 . A carbon nanotube composition according to  claim 2 , wherein said carbon nanotube composition includes a the heterocyclic compound trimer (i) having a layered structure. 
     
     
         22 . A production method of a carbon nanotube composition comprising: irradiating a carbon nanotube composition according to  claim 1  with ultrasonic waves and mixing. 
     
     
         23 . A composite comprising a base material, and a coated film composed of the carbon nanotube composition according to  claim 1  on at least one surface of the base material. 
     
     
         24 . A method of producing a composite comprising: coating the carbon nanotube composition according to  claim 1  onto at least one surface of a base material, and forming a coated film by allowing the coated carbon nanotube to stand at room temperature or subjecting it to heat treatment. 
     
     
         25 . A production method of a composite according to  claim 24 , wherein the heat treatment is carried out within a temperature range of normal temperature to 250° C.