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.
|IPC||D21H 27/ 20 A I|
|Publication status||Published - 15 Sep 1999|
|MoE publication type||H1 Granted patent|