发明名称 |
Optically variable marking |
摘要 |
The invention relates to an optically variable marking comprising a semiopaque substrate with a first surface that is covered with an optically variable layer that is for example a liquid crystal polymer layer or a layer comprising pearlescent pigments, and a second surface that is partially covered with a metal layer in the shape of a pattern, to methods of its preparation and to its use for decorative or security applications. |
申请公布号 |
EP1281538(A3) |
申请公布日期 |
2004.01.28 |
申请号 |
EP20020012684 |
申请日期 |
2002.06.07 |
申请人 |
MERCK PATENT GMBH |
发明人 |
KUNTZ, MATTHIAS, DR.;DELP, REINER;RIDDLE, RODNEY;PATRICK, JOHN;HAMMOND-SMITH, ROBERT |
分类号 |
B42D15/10 |
主分类号 |
B42D15/10 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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