Polyimide precursor composition, polyimide-molded product, and image forming apparatus

1. A polyimide precursor composition comprising:

a solvent;

acidic carbon black having a pH of 5.0 or less, and

a polyimide precursor having a repeating unit represented by the following Formula (I),

wherein R 1 represents a tetravalent organic group, R 2 represents a divalent organic group, each of R 3 and R 4 independently represents a 1-alkoxyethyl group or hydrogen, wherein at least one of R 3 and R 4 represents hydrogen and R 3 and R 4 are not hydrogen at the same time.

2. The polyimide precursor composition according to claim 1 ,

wherein R 1 is a residue obtained by removing four carbonyl groups from a tetracarboxylic dianhydride, and

the tetracarboxylic dianhydride is at least one selected from the group consisting of 3,3′,4,4′-biphenyl tetracarboxylic acid, 2,3,3′,4′-biphenyl tetracarboxylic acid pyromellitic acid, and 3,3′,4,4′-diphenylether tetracarboxylic acid.

3. The polyimide precursor composition according to claim 1 ,

wherein R 1 is a residue obtained by removing four carbonyl groups from 3,3′,4,4′-biphenyl tetracarboxylic acid.

4. The polyimide precursor composition according to claim 1 ,

wherein R 2 is a residue obtained by removing two amino groups from a diamine compound, and

the diamine compound is at least one selected from the group consisting of 4,4′-diaminodiphenylether, 3,4′-diaminodiphenylether, p-phenylenediamine, and m-phenylenediamine.

5. The polyimide precursor composition according to claim 1 ,

wherein R 2 is a residue obtained by removing two amino groups from a diamine compound, and

the diamine compound is 4,4′-diaminodiphenylether or p-phenylenediamine.

6. The polyimide precursor composition according to claim 1 ,

wherein R 3 represents at least one selected from the group consisting of a 1-methyl alkoxyethyl group, a 1-ethyl alkoxyethyl group, a 1-propyl alkoxyethyl group, a 1-butyl alkoxyethyl group, a 1-pentyl alkoxyethyl group, and a 1-cyclohexyl alkoxyethyl group.

7. The polyimide precursor composition according to claim 1 ,

wherein R 3 represents at least one selected from the group consisting of a 1-methyl alkoxyethyl group, a 1-ethyl alkoxyethyl group, and a 1-cyclohexyl alkoxyethyl group.

8. The polyimide precursor composition according to claim 1 , comprising at least an amino group on a terminal of the polyimide precursor.

9. The polyimide precursor composition according to claim 1 , further comprising a vinyl ether compound.

10. The polyimide precursor composition according to claim 9 ,

wherein the vinyl ether compound is at least one selected from the group consisting of a vinyl ether compound having a linear or branched saturated or unsaturated hydrocarbon skeleton, a vinyl ether compound containing an alicyclic saturated hydrocarbon skeleton, and vinyl ethers containing an ether bond in a linear or branched saturated or unsaturated hydrocarbon skeleton.

11. A polyimide-molded product formed by performing a heating treatment on a coating film that is formed by coating the polyimide precursor composition according to claim 1 onto a material to be coated.

12. An image forming apparatus comprising:

an image holding member;

a charging unit that charges a surface of the image holding member;

an electrostatic latent image-forming unit that forms an electrostatic latent image on a charged surface of the image holding member;

a developing unit that forms a toner image by developing the electrostatic latent image formed on the surface of the image holding member by using a toner;

an intermediate transfer member that has the polyimide-molded product according to claim 11 as an endless belt;

a primary transfer unit that transfers the toner image formed on a surface of the image holding member to the intermediate transfer member; and

a secondary transfer device that transfers the toner image on the intermediate transfer member to a recording medium.