Polychromic ink composition depending on viewing angle
US6730154B2 · kind B2 · utility
11Cited by
7References
37Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 13, 2001 |
| Grant date | May 4, 2004 |
| Priority date | — |
| Expiry date | Apr 13, 2021 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09C2200/1054
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A polychromic ink composition depending on viewing angle comprises 0.5 to 40% by weight of cholesteric liquid crystal polymer particles whose maximum particle diameter is 1 to 200 &mgr;m, 1.0 to 30.0% by weight of binder resins, 0.05 to 20% by weight of pigments with a deep-colored coloring matter whose average particle diameter is 0.01 to 0.5 &mgr;m, 0.01 to 5.0% by weight of a shear-thinning property imparting agent, and water with respect to the total amount of the ink composition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.