| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a polyester resin in which flexibility in a normal temperature is excellent, brittleness is improved, and also wet heat durability is excellent, and more precisely, to provide a copolyester resin suitable to a molding application or a potting processing application of electric and electronic parts or the like. <P>SOLUTION: The copolyester resin includes: an aromatic dicarboxylic acid and dodecanedioic acid as an acid component; and 1,4-butanediol and polybutadiene glycols as a glycol component, wherein the content the dodecanedioic acid in the acid component is 20-50 mole%, the content of the 1,4-butanediol in the glycol component is at least 80 mole%, and the content of the polybutadiene glycols in the glycol component is 0.5-20 mole%. <P>COPYRIGHT: (C)2013,JPO&INPIT |
