| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an epoxy-modified polysiloxane having excellent light resistance and excellent adhesion and useful for sealing a light-emitting element. <P>SOLUTION: A thermosetting composition for sealing the light-emitting element contains the modified polysiloxane which has two or more organic groups having an epoxy unit in a molecule thereof, wherein the modified polysiloxane simultaneously satisfies requisites (A) and (B) as follows: (A) a molecular weight peak value Mp of the modified polysiloxane is not less than 1,000 and less than 4,500; and (B) a content of low molecular weight fraction having a molecular weight of not more than 1,000 is not more than 15% in the the modified polysiloxane. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
