| 摘要 |
PROBLEM TO BE SOLVED: To provide a hardening agent useful for lowering a solidifying temperature, reducing a hardening time and stabilizing a pot life of an epoxy resin for a sealing material or an encapsulating material for electronic parts such as a liquid crystal display and the like. SOLUTION: The mixed crystal compound of hydrazide compounds comprises at least two crystalline hydrazide compounds bearing at least one hydrazide group in one molecule. The production method of the mixed crystal compound of hydrazide compounds comprises heat-melting and mixing at least two crystalline hydrazide compounds bearing at least one hydrazide group in one molecule at their melting points or higher, and cooling it. COPYRIGHT: (C)2010,JPO&INPIT |
