Polyimide precursor, polyimide, and coating solution for under layer film for image formation
AssigneeNissan Chemical Industries, Ltd.
InventorsShinichi MAEDA, Yosuke IINUMA
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Abstract
There is provided a polyimide precursor which can alter the hydrophilicity/hydrophobicity of the surface of a cured film formed readily even by a low level of ultraviolet ray irradiation; and a polyimide produced from the polyimide precursor. The polyimide precursor having a structure represented by the following formula (1): where A represents a tetravalent organic group; B represents a bivalent organic group having a thiol ester bond in its main chain; R1 and R2 independently represent a hydrogen atom or a univalent organic group; and n represents a natural number.
Claims6
A coating solution for an under layer film for image formation comprising:
- at least one type of a compound selected from a group consisting of:
- (i) a polyimide precursor having a structure represented by the following formula (1):
- where A represents a tetravalent organic group;
- B represents a bivalent organic group having a thiol ester bond in its main chain;
- R1 and R2 independently represent a hydrogen atom or a univalent organic group;
- and n represents a natural number, and
- (ii) a polyimide produced by dehydrating and ring closing the polyimide precursor.
Dependencies are inferred from the claim text.