Soluble polymer compound, method for producing soluble polymer compound, resin composition, resin composition film, cured film, and electronic component

A soluble polymer compound containing a structure having a repeating unit represented by chemical formula (1) and further containing a structure derived from an acid anhydride silane residue,

• wherein the soluble polymer compound contains a structure represented by chemical formula (2), and in the chemical formula (2), the acid anhydride silane residue is derived from a structure represented by chemical formula (4):
• in which A represents a tetravalent tetracarboxylic acid residue having two or more carbon atoms, and B represents a divalent diamine residue having two or more carbon atoms,
• in which A represents a tetravalent tetracarboxylic acid residue having 2 or more carbon atoms, B represents a divalent diamine residue having 2 or more carbon atoms, and n represents an integer of 0 to 3, X represents a structure represented by chemical formula (3), and Y represents a hydrocarbon group having 1 to 10 carbon atoms, and Z represents a silane residue having 1 to 10 carbon atoms,
• in which an oxygen atom in chemical formula (3) is bonded to a Si atom in chemical formula (2), and