发明授权
- 专利标题： Bismuth-containing laser markable compositions and methods of making and using same
- 专利标题（中）： 含铋激光可标记组合物及其制造和使用方法
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申请号： US10322923申请日： 2002-12-18
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公开(公告)号： US06680121B2公开(公告)日： 2004-01-20
- 发明人: George Emil Sakoske , Joseph E. Sarver
- 申请人： George Emil Sakoske , Joseph E. Sarver
- 主分类号： B32B100
- IPC分类号： B32B100
摘要：
The present invention relates to additive, pigment or colorant materials which may be used for laser marking. The materials comprise oxides of bismuth and at least one additional metal. Preferred laser-markable bismuth-containing oxide compounds are of the formula BixMyOz, where M is at least one metal selected from Zn, Ti, Fe, Cu, Al, Zr, P, Sn, Sr, Si, Y, Nb, La, Ta, Pr, Ca, Mg, Mo, W, Sb, Cr, Ba and Ce, x is from about 0.3 to about 70, y is from about 0.05 to about 8, and z is from about 1 to about 100. The bismuth-containing material may be dispersed in a substrate which is subsequently irradiated by a laser to provide a contrasting mark in the irradiated region.
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