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US 12,291,616 B2Granted
Insulating varnish composition, rotating machine coil and rotating machine
AssigneeMitsubishi Electric Corporation
InventorsTakahiro Mabuchi, Xiaohong Yin
Life of this patent
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Abstract
Provided is an insulating varnish composition, including: two or more kinds of epoxy resins; and a filler having an average primary particle diameter of 500 nm or less, wherein the two or more kinds of epoxy resins contain 80 mass % or more of an epoxy resin having a number of repetitions of 0 in a molecular structural formula thereof with respect to a total mass of the two or more kinds of epoxy resins.
Claims20
An insulating varnish composition, comprising:
- two or more epoxy resins having different skeletons or different numbers of repetitions in a molecular structural formulae;
- and
- a filler having an average primary particle diameter of 500 nm or less,
- wherein the two or more epoxy resins contain 80 mass % or more of an epoxy resin having a number of repetitions of 0 in a molecular structural formula thereof with respect to a total mass of the two or more epoxy resins,
- wherein the two or more epoxy resins contain an epoxy resin having a bisphenol A skeleton, an epoxy resin having a bisphenol F skeleton, and an epoxy resin having a tetramethylbiphenol skeleton.
2 more elements
Dependencies are inferred from the claim text.