| 摘要 |
PROBLEM TO BE SOLVED: To provide a hydrolyzable polyester resin well preventing pollution of various structures, such as ships, marine structures and sea water uptake pipes, and various tools such as fishing nets by aquatic adhering animals and plants such as microorganism and algae adhering to submarine or underwater surfaces of the structures and tools. SOLUTION: The method for manufacturing the polyester resin comprises ring-opening polymerization of a cyclic monomer selected from glycolides, lactides and caprolactones in the presence of a hydroxycarboxylic acid metal salt of formula (1) (wherein R is a 1-20C alkyl or a 2-20C alkylene group; and M is Mg or Ca). COPYRIGHT: (C)2005,JPO&NCIPI
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