Fluidity modifier, composition containing same, and cured product of said composition

An inorganic composition comprising:

• an inorganic filler;
• and
• an inorganic filler fluidity modifier, wherein
• the inorganic filler fluidity modifier is an ester resin represented by the following general formula (I)
• wherein, in the general formula (I),
• Y represents a hydrogen atom or a monocarboxylic acid residue having 1 to 9 carbon atoms,
• G represents an aliphatic diol residue having 2 to 9 carbon atoms and the aliphatic diol is one or more selected from ethylene glycol, 1,2-propylene glycol, 1,3-propanediol, 1,2-butanediol, 1,3-butanediol, 2-methyl-1,3-propanediol, 1,4-butanediol, 1,5-pentanediol, 2,2-dimethyl-1,3-propanediol, 2,2-diethyl-1,3-propanediol, 2-n-butyl-2-ethyl-1,3-propanediol, 3-methyl-1,5-pentanediol, 1,6-hexanediol, 2,2,4-trimethyl-1,3-pentanediol, 2-ethyl-1,3-hexanediol, 2-methyl-1,8-octanediol, 1,9-nonanediol, triethylene glycol, tetraethylene glycol, and tripropylene glycol,
• A represents an aliphatic dicarboxylic acid residue having 2 to 10 carbon atoms,
• X represents a dicarboxylic acid residue having 1 to 8 carbon atoms, and
• m represents the number of repeating units and is an integer of 3 to 30;
• G and A may be the same or different from each repeating unit, and a plurality of G may be the same as or different from each other,
• or represented by the following general formula (II)
• wherein, in the general formula (II),
• Z represents a monoalcohol residue having 2 to 10 carbon atoms,
• G, A, X are the same as defined above, and
• n represents the number of repeating units and is an integer of 3 to 30,
• G and A may be the same or different for each repeating unit,
• wherein the inorganic filler fluidity modifier has an acid value is in a range of 3 to 50, and a number average molecular weight is in a range of 300 to 3000, and
• wherein the inorganic filler fluidity modifier is contained in an amount of 0.1 to 30 parts by mass with respect to 100 parts by mass of the inorganic filler.