Pigmented porous material
The present application relates to porous materials given coloured pigmentation with organic pigments localized in their pores and to a process for their preparation, which is characterized by the use of particular thermally activated latent catalysts. The present invention relates to a colored, pre...
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| Format: | Patent |
| Sprache: | eng |
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| Zusammenfassung: | The present application relates to porous materials given coloured pigmentation with organic pigments localized in their pores and to a process for their preparation, which is characterized by the use of particular thermally activated latent catalysts.
The present invention relates to a colored, preferably natural porous material comprising in its pores an effectively coloring amount of an organic pigment which is obtained by fragmenting a meltable or solvent-soluble pigment precursor in the presence of a thermally activated acid precursor, and to a low to medium temperature process for its preparation. |
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