Abstract
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.
Original language | English |
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Patent number | EP0942099 |
IPC | D21H 27/ 20 A I |
Priority date | 13/03/1998 |
Publication status | Published - 15 Sep 1999 |
MoE publication type | H1 Granted patent |