|Cholesteric Liquid Crystals||Requirements for Pigment application|
|Periodic structure (facilitates color travel)||Temperature Insensitive (Color Fixed)|
|Thermochromic (change of color with temperature)||Fairly Durable Properties wrt temperature, chemical resistance needed|
|Alignment is needed||Good processing i.e. ease in manufacture is needed|
|Highly aromatic nature|
Optical Properties of CLC Pigments
A diagram can betterly describe the optical properties of CLC pigments.
It is to be understood here, that quite unlike the metal interference systems, CLCs can develop their color reflection through a single layer only.
Color travelling properties of CLC Pigments
CLC pigments show very good blue-shifting color travel as illustrated in this graphical representation.
CLC pigments are increasingly applied as a deterrence for counterfeit in banknotes, securing documents, and in authentication processes to protect brand and products. Light that is reflected from a CLC is circularly polarized, this effect finds very popular application in security and machine read applications.
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Kolorjet Chemicals Pvt Ltd.
Malad West, Mumbai,