Abstract: A polarization selective scattering security device comprising a printed patterned birefringent matrix of LCP polymer comprising a dispersed phase and optionally one or more additives, wherein the ordinary or the extra-ordinary refractive index of the birefringent matrix of LCP polymer is approximately matched by one of the indices of refraction of the dispersed phase aligned in the same direction whereas the other refractive index is not matched. Moreover, a process for producing such security device is disclosed.

Abstract: A polymerizable mixture for ink jetting, having liquid crystalline phases comprising the following components: a) 50-80 wt % mono-functional LCP's, b) 10-50 wt % of a higher functional LCP's, f) 0.01-5 wt % initiators, preferably below 1% g) 0.01-5 wt % inhibitors, preferably below 1% h) 0-20 wt % additives, preferably below 10 wt %, with the provision that the total amount of the components is 100 wt %, characterized in that the polymerizable mixtures has a viscosity smaller than 0.015 Pa s at 100° C. and yet remaining thermally stable.

Abstract: A polymerizable mixture for ink jetting, having liquid crystalline phases comprising the following components: a) 50-80 wt % mono-functional LCP's, b) 10-50 wt % of a higher functional LCP's, f) 0.01-5 wt % initiators, preferably below 1% g) 0.01-5 wt % inhibitors, preferably below 1% h) 0-20 wt % additives, preferably below 10 wt %, with the provision that the total amount of the components is 100 wt %, characterized in that the polymerizable mixtures has a viscosity smaller than 0.015 Pa s at 100° C. and yet remaining thermally stable.

Abstract: A polarization selective scattering security device comprising a printed patterned birefringent matrix of LCP polymer comprising a dispersed phase and optionally one or more additives, wherein the ordinary or the extra-ordinary refractive index of the birefringent matrix of LCP polymer is approximately matched by one of the indices of refraction of the dispersed phase aligned in the same direction whereas the other refractive index is not matched. Moreover, a process for producing such security device is disclosed.

Abstract: A security device comprising the following components: a) 30-80 wt % mono-functional LCP's, b) 0-50 wt % higher functional LCP's, preferably below 50 wt % c) 0-30 wt % liquid crystalline inert monomers, preferably below 20 wt % d) 0-50 wt % non-liquid crystalline (mono- or higher) functionalized monomers, preferably below 30 wt % e) 0-30 wt % non-liquid crystalline inert monomers, preferably below 20 wt % f) 0.01-10 wt % initiators, preferably below 2 wt % g) 0.-10 wt % inhibitors, preferably below 2 wt % h) 0.