发明授权
US5693135A Interference pigments containing reduced titanium oxide layers for preparing forgeryproof documents and packaging 失效
含有还原氧化钛层的干涉颜料用于制备防伪文件和包装

Interference pigments containing reduced titanium oxide layers for
preparing forgeryproof documents and packaging
摘要:
Interference pigments based on titanium dioxide-coated silicatic platelets which have been heated in a reducing atmosphere are useful for producing forgeryproof documents and packaging.
信息查询
0/0