Electrical steel sheet and method of manufacturing the same
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United States of America Patent
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Jun 2, 2020
Grant Date -
Aug 15, 2013
app pub date -
Oct 25, 2011
filing date -
Oct 29, 2010
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Abstract
An insulating coating film obtained by mixing 0.5 parts by mass to 10 parts by mass of a copolymer of a fluoroolefin and an ethylenically unsaturated compound when converted into a solid content with 100 parts by mass in solid content of a mixture composed of a metal phosphate and a specific organic resin or a mixture composed of colloidal silica and a specific organic resin is designed to be provided on a surface of an electrical steel sheet, and in this manner, it is possible to obtain an electrical steel sheet having good corrosion resistance under a wet environment and having good properties related to the insulating coating film such as a space factor and adhesiveness.
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