A polyester resin produced by polycondensing a dicarboxylic acid component containing an aromatic dicarboxylic acid or its ester-forming derivative as the main component and a diol component containing ethylene glycol as the main component in the presence of at least an antimony compound and a phosphorus compound, via an esterification reaction or an ester exchange reaction, which is characterized in that the amount of antimony eluted when immersed in hot water of 95 C. for 60 minutes in the form of particles having a number average particle weight of 24 mg, is not more than 1 g per 1 g of the polyester resin, as antimony atoms (Sb).

 
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> Photosensitive resin composition, photosensitive element using the same, method for producing resist pattern, resist pattern and substrate having the resist pattern laminated thereon

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~ 00264