Patent ID: 8426014

Claim:
A liquid crystal polymer marking, wherein the marking is obtained by a process comprising: (i) applying a chiral liquid crystal precursor composition onto a substrate; (ii) heating the applied chiral liquid crystal precursor composition to bring same to a first chiral liquid crystal state; (iii) applying to one or more areas of the applied composition at a first chiral liquid crystal state, the one or more areas being less than a total surface area of the applied composition at a first chiral liquid crystal state, at least one of (1) at least one modifying composition which modifies the first chiral liquid crystal state locally in the one or more areas, and (2) at least one modifying composition which upon heating modifies the first chiral liquid crystal state locally in the one or more areas; (iv) in the case of (2), heating at least one of the one or more areas to bring same to at least one of a second chiral liquid crystal state and an isotropic state forming a locally modified chiral liquid crystal precursor in the at least one of the one or more areas; and (v) at least one of curing and polymerizing the thus locally modified precursor composition to convert same into a liquid crystal polymer marking, and no curing or polymerization of components is carried out prior to the at least one of curing and polymerizing the thus modified chiral liquid crystal precursor composition.