	US 12,258,666 B2
	Aqueous composition for coating grain-oriented steel
Marek Machno, Vienna (AT); Johann Schellenberg, Baden (AT); Gerhard Typpelt, Vienna (AT); Karl Rametsteiner, Linz (AT); and Christian Breitwieser, Vienna (AT)
Assigned to KANSAI HELIOS AUSTRIA GMBH, Vienna (AT)
Appl. No. 17/428,720
Filed by KANSAI HELIOS AUSTRIA GMBH, Vienna (AT)
PCT Filed Feb. 4, 2020, PCT No. PCT/EP2020/052666 § 371(c)(1), (2) Date Aug. 5, 2021, PCT Pub. No. WO2020/161094, PCT Pub. Date Aug. 13, 2020.
Claims priority of application No. 19155700 (EP), filed on Feb. 6, 2019.
Prior Publication US 2022/0112605 A1, Apr. 14, 2022
Int. Cl. C23C 22/18 (2006.01); C23C 22/20 (2006.01); H01F 1/147 (2006.01)

CPC C23C 22/20 (2013.01) [C23C 22/18 (2013.01); H01F 1/14783 (2013.01)]

20 Claims

1. An aqueous composition for coating grain oriented steel, comprising

aluminium cations,

manganese cations,

dihydrogen phosphate, hydrogen phosphate and/or phosphate anions,

colloidal silica, and

optionally iron cations,

wherein the aluminium cations, expressed as Al₂O₃, manganese cations, expressed as MnO, dihydrogen phosphate, hydrogen phosphate and/or phosphate anions, expressed as P₂O₅, colloidal silica, expressed as SiO₂, and optionally iron cations, expressed as FeO, which are present in the composition, give a chemical formula of (Al₂O₃)₂(MnO)_1.8-2.4(FeO)_0-0.2(P₂O₅)_5-7(SiO₂)_≥30.