FIELD: chemistry.
SUBSTANCE: invention relates to magnetic compositions used as ink or toner for producing pigmented magnetic materials. The magnetic composition contains particles having a core made of magnetic material and a coating surrounding the core. The pigmented magnetic layer on the substrate has a Hunter Lab colour scale L-value of at least 50. The coating of each particle is sufficiently opaque so as to completely conceal the colour of said core or an additional coating under said coating. Described also is a method of forming a pigmented magnetic layer, the obtained articles, e.g. banknotes, the protective property of the magnetic layer for the banknote.
EFFECT: disclosed magnetic compositions contain particles which are coated such that they look white, substantially white or coloured, while providing the desired magnetic properties and opening up new possibilities of producing corresponding magnetic layers on substrates.
24 cl, 2 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF CHOOSING COMPOSITION FOR MULTILAYER COATING | 2001 |
|
RU2276337C2 |
| PROTECTIVE ELEMENT WITH EFFECT OF COLOR CHANGE AND METHOD OF ITS PRODUCTION AND USE | 2012 |
|
RU2600088C2 |
| LIGHT-COLOURED FIBER-CEMENT ITEMS AND METHODS OF MANUFACTURE THEREOF | 2018 |
|
RU2749259C2 |
| METHOD FOR SELECTION OF PAINT | 2005 |
|
RU2382339C2 |
| ENGRAVED OPTICALLY MODIFIED IMAGE | 2006 |
|
RU2386484C2 |
| METHOD OF ADJUSTING IMAGES OF DECORATIVE PRINTING AND DEVICE FOR REALISING SAID METHOD | 2014 |
|
RU2592489C2 |
| METHOD OF ADJUSTING IMAGES OF DECORATIVE PRINTING AND DEVICE FOR REALIZING SAID METHOD | 2016 |
|
RU2658269C1 |
| COMPOSITE MATERIAL FOR MARKING A MATERIAL OBJECT | 2019 |
|
RU2725599C1 |
| SCALE FOR USE IN CONCEALED PROTECTION | 2009 |
|
RU2523474C2 |
| METHOD FOR PRODUCTION OF COVERED TITANIUM DIOXIDE PARTICLES, COVERED TITANIUM DIOXIDE PARTICLES, AND PRODUCTS CONTAINING SUCH PARTICLES | 2018 |
|
RU2781183C2 |
