| abstract |
Cholesteric material is produced by applying a pourable cholesteric mixture to a support and forming a solid layer.- DETAILED DESCRIPTION - Cholesteric material comprises a cholesteric layer(s) of average thickness below 0.2 mu .- INDEPENDENT CLAIMS are included for the production of the material by applying a pourable cholesteric mixture to a support and forming a solid layer, a pigment obtained by grinding the material and a composition containing the pigment.TF - TECHNOLOGY FOCUS - POLYMERS - The mixture has a viscosity of 10-500 (10-100) mPa.s at 23degreesC, is applied at 1-800 (1-500) m/min. and is prepared by mixing a comprises a cholesteric monomer(s) in an inert diluent, an achiral, nematic monomer(s) and a chiral compound in an inert diluent, a cholesteric, crosslinkable oligomer or polymer in an inert diluent, a cholesteric polymer in a polymerizable diluent or a cholesteric polymer which can be congealed on rapid cooling below the Tg (claimed) |