Ground limestone as a filler in paper

Details Ground limestone as a filler in paper Ground limestone as a filler in paper

C - Chemistry, Metallurgy

09

C

6/216, 92/62

C09C 1/00 (2006.01) C09C 1/02 (2006.01) D21H 17/67 (2006.01)

Patent

CA 1072258

PATENT APPLICATION OF HARRY D. BAUMAN USE OF GROUND LIMESTONE AS A FILLER IN PAPER ABSTRACT OF THE DISCLOSURE Combinations of fine particle size precipitated CaCO3 and coarser natural ground limestones, up to about 35% ground limestone, have the same opacifying power in paper as does 100% precipitated CaCO3, provided the ground lime- stone has the proper particle size distribution.

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