Invention Grant
- Patent Title: Low V2O5—content and V2O5—free porcelain enamels
- Patent Title (中): 低V2O5含量和无V2O5的瓷搪瓷
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Application No.: US12993113Application Date: 2009-08-12
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Publication No.: US08945715B2Publication Date: 2015-02-03
- Inventor: Efimenko Svetlana , Nancy Crevits , Christian Schlegel
- Applicant: Efimenko Svetlana , Nancy Crevits , Christian Schlegel
- Applicant Address: BE Brugge
- Assignee: Pemco Brugge BVBA
- Current Assignee: Pemco Brugge BVBA
- Current Assignee Address: BE Brugge
- Agency: Clements Bernard PLLC
- Agent Gregory N. Clements
- Priority: EP08162814 20080822
- International Application: PCT/EP2009/060439 WO 20090812
- International Announcement: WO2010/020570 WO 20100225
- Main IPC: C03C8/08
- IPC: C03C8/08 ; C03C8/14 ; B32B15/04 ; C03C8/12 ; C03C3/064 ; C23D5/02

Abstract:
The present invention relates to a low-V2O5-content and even V2O5-free porcelain enamel with improved dish-washer resistance, very good acid resistance and good adherence on various substrates. The invention moreover relates to a transparent low-V2O5-content and even V2O5-free porcelain enamel frit for application of enamel coatings with infinite color range on a substrate made of aluminum, cast aluminum, aluminum alloy, aluminum-magnesium alloy, cast aluminum alloy, copper, austenitic stainless steel and mild steel, presenting improved dish-washer resistance, good acid resistance and good adherence on the substrate.The composition of the porcelain enamel in question comprises about 30 wt-% to about 50 wt-% SiO2, about 30 wt-% to about 40 wt-% R2O, about 15 wt-% to about 25 wt-% TiO2, about 0 wt-% to about 5 wt-% RO, about 0 wt-% to about 4 wt-% V2O5, about 0.3 wt-% to about 7 wt-% Fe2O3, about 0 wt-% to about 3 wt-% Sb2O3, about 0 wt-% to about 3 wt-% SnO2, about 0 wt-% to about 2 wt-% B2O3, about 0 wt-% to about 3 wt-% Al2O3, about 0 wt-% to about 4 wt-% P2O5, about 0 wt-% to about 1 wt-% MoO3, about 0 wt-% to about 2 wt-% F2, about 0 wt-% to about 4 wt-% ZrO2, about 0 wt-% to about 4 wt-% ZnO, about 0 wt-% to about 6 wt-% NOx, R2O is a combination of alkaline oxides selected from the group of: Na2O 10-23 mol %, K2O 7-20 mol % and Li2O 1-6.5 mol %, wherein RO represent at least one earth alkali oxide and wherein the molar ratio of (Li2O+B2O3) to TiO2 amounts to 0.2 to 0.6.
Public/Granted literature
- US20110129679A1 LOW V2O5 - CONTENT AND V2O5 - FREE PORCELAIN ENAMELS Public/Granted day:2011-06-02
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