| abstract |
[PROBLEMS] To provide a paint for a fixed resistor which can be cured at a relatively low temperature in a short time, has excellent heat resistance and moisture resistance, and can form a protective film having appropriate flexibility. (A) a bisphenol type epoxy resin having an epoxy equivalent of 150 to 500, and (B) at least two hydroxyl groups in one molecule per 100 parts by weight of the bisphenol type epoxy resin; And 10 to 60 parts by weight of a novolak type phenol resin having a hydroxyl equivalent of 90 to 300, and (C) at least one of 50 to 50 selected from silica, alumina and hydrated alumina. 200 parts by weight, and (D) 2 to 20 parts by weight of a polyamine having two or more primary amino groups and / or secondary amino groups in one molecule and having an active hydrogen equivalent of 50 to 200. It is a paint for fixed resistors. |