To provide a polyester resin particularly useful in application to optical films, etc. A polyester resin which is an alicyclic polyester comprising dicarboxylic acid units and diol units, characterized by the following (1) to (4):

    • (1) the dicarboxylic acid units are composed mainly of 1,4-cyclohexanedicarboxylic acid units,
    • (2) the diol units are composed mainly of 1,4-cyclohexanedimethanol units,
    • (3) the ratio of alkyl ester terminals to all terminals of the polyester is at most 5 mol %, and
    • (4) the light transmittance of a molded plate of the resin having a thickness of 2 mm is at least 87%.
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    > Polyester resin, molded product made thereof and process for production of polyester resin

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

    ~ 00264