发明授权
US5976239A Pigment with color dependent on viewing angle, method of making and use of same 失效
颜料颜色取决于视角,制作和使用方法

Pigment with color dependent on viewing angle, method of making and use
of same
摘要:
The invention relates to a pigment with color dependent on the viewing angle, which has been obtained by three-dimensional crosslinking of oriented substances of liquid-crystalline structure having a chiral phase. In order to stabilize the color of such a pigment at elevated temperatures, crosslinking is carried out in the presence of at least one additional, color-neutral compound comprising at least two crosslinkable double bonds.
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