Chromium-free insulation coating composition, method for making same, and grain oriented silicon steel sheet
US10301480B2 · kind B2 · utility
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10Claims
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Key dates
| Filing date | May 15, 2018 |
| Grant date | May 28, 2019 |
| Priority date | — |
| Expiry date | May 15, 2038 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K3/22
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A chromium-free insulation coating composition includes 100 parts by weight of a phosphate solution, 1-5 parts by weight of molybdate, 50-150 parts by weight of silica sol, 3-13 parts by weight of selenium dioxide, 1-10 parts by weight of metal oxide and/or metal hydroxide, 5-15 parts by weight of organic acid, 1-6 parts by weight of boric acid, and 100-300 parts by weight of water.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.