Molding material for sealing

Abstract

Abstract PURPOSE:To obtain a resin-sealing molding material which can be readily identified after marking by using one of azo, nigrosine and anthraquinone dyes which contain 0.1wt% or less of Cl ions. CONSTITUTION:One of azo, nigrosine and anthraquinone dyes is used in a range of 0.01-20wt% of the entirety in the known sealing material such as phenol resin or epoxy resin. Marking is unclear if the dye is 0.01% or less, and moisture resistance is deteriorated if the dye is 20% or more. The content of Cl ions in the dye is 0.1wt% or less to prevent the moisture resistance from decreasing. When this sealing material is used, a resin-sealed part which can be readily identified after marking can be obtained.

Inventors

• 👤 Yasuhiro Kyotani
• 👤 京谷　靖宏

Bibliographic Details