Abstrakti
The present invention relates to the use of calcium oxalate as a filler or pigment. In particular described herein is a method of reducing the combustion residue of coated paper or cardboard products by replacing at least a part of the conventional pigments and filler needed for achieving predetermined optical properties with calcium oxalate.
| Alkuperäiskieli | Englanti |
|---|---|
| Patenttinumero | EP0942099 |
| IPC | D21H 27/ 20 A I |
| Prioriteetti päiväys | 13/03/1998 |
| Tila | Julkaistu - 15 syysk. 1999 |
| OKM-julkaisutyyppi | H1 Myönnetty patentti |