公开(公告)号：US20020061809A1

公开(公告)日：2002-05-23

申请号：US09932472

申请日：2001-08-17

申请人： Ferro France S.A.R.L.

发明人： Alain Aronica ,  Emmanuel Marinho ,  David Coutouly ,  Luc Allemeersch ,  Christophe Reb

IPC分类号： C03C008/14 ,  C03C008/20 ,  C03C008/08 ,  C03C003/16 ,  C03C003/21 ,  C03C003/19

CPC分类号： C03C8/14 ,  C03C8/08 ,  C03C8/20 ,  C03C2205/02 ,  C03C2207/08

摘要： The present invention provides a composition for use in forming a white porcelain enamel coating on aluminized or galvanized steel. The composition according to the present invention includes a solids portion including a glass component and a white pigment. The glass component includes one or more glass frits including by weight from about 30% to 50% P2O5, from about 15% to about 30% Al2O3, from about 8% to about 40% X2O where XnullNa and/or K, up to about 30% TiO2, up to about 12% B2O3, up to about 10% K2O, up to about 10% ZnO, up to about 8% SiO2, up to about 7% La2O3, up to about 5% Li2O, and up to about 15% F. The white pigment include TiO2. The present invention also provides a method of forming a white porcelain enamel coating on an aluminized or galvanized steel substrate that includes providing a steel substrate having an aluminized or galvanized surface, providing a composition for use in forming a white porcelain enamel coating as previously described, applying the composition to the aluminized or galvanized surface, and firing the composition to form a white porcelain enamel coating. And, the present invention also provides a section of aluminized or galvanized steel having a white porcelain enamel coating disposed thereon, with the white porcelain enamel coating exhibiting an acid resistance of AA or better according to ISO 2722, a class 1 bond adherence rating according to EN 12209, and an opacity of Lnull94 according to the CIE L*a*b* uniform color space, where L* null116 (Y/Y0)nullnull16 for Y/Y0 ) 0.008856.

摘要翻译： 本发明提供一种用于在镀铝或镀锌钢上形成白色瓷釉涂层的组合物。 根据本发明的组合物包括包含玻璃成分和白色颜料的固体部分。 玻璃组分包括一种或多种玻璃料，其包含重量约30％至50％的P 2 O 5，约15％至约30％的Al 2 O 3，约8％至约40％的X 2 O，其中X = Na和/或K， 至约30％的TiO 2，至多约12％的B 2 O 3，至多约10％的K 2 O，至多约10％的ZnO，至多约8％的SiO 2，至多约7％的La 2 O 3，至多约5％的Li 2 O 至约15％F.白色颜料包括TiO 2。 本发明还提供了一种在镀铝或镀锌钢基材上形成白色瓷釉涂层的方法，其包括提供具有镀铝或镀锌表面的钢基材，提供用于形成如前所述的白瓷搪瓷涂层的组合物， 将组合物施用于镀铝或镀锌表面，并烧成组合物以形成白色瓷搪瓷涂层。 并且，本发明还提供了一种镀铝或镀锌钢，其上设置有白色瓷釉涂层，根据ISO 2722，白色瓷搪瓷涂层具有AA或更好的耐酸性，根据 EN 12209，并且根据CIE L * a * b *均匀色彩空间，L> = 94的不透明度，其中对于Y / Y0，L * = 116（Y / Y0）1/2 -16）0.008856。