FIELD: optics.
SUBSTANCE: invention relates to crystalline colloidal arrays used as materials scattering radiation. Described is a radiation reflecting and absorbing composite composition containing a plurality of colloidal crystals or units of colloidal crystals, wherein each said crystal contains radiation reflecting particles in form of a colloidal mass and radiation absorbing particles dispersed in crystals. Composition scatters radiation in one band substantially in all directions and absorbs radiation in other band. Method of producing radiation scattering composition is performed by preparing a dispersion of charged particles in form of periodic arrays to obtain a plurality of colloidal crystals, in which are randomly distributed radiation absorbing particles. Described also is a reflecting coating composition containing composite composition and a film-forming composition.
EFFECT: reflection in a wide wavelength range, which enables to endow coating composition, in particular coating, a white colour appearance or masking properties.
19 cl, 9 dwg, 18 ex
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