abstract |
1. A COMPOSITE PIGMENT COMPRISING FINELY DIVIDED PARTICLES OF A SILICATE MINERAL PIGMENT CARRYING ON THE SURFACE THEREOF AS A TRUE COATING AT LEAST ONE HYDROUS ADDITIVE MATERIAL IN A SUBSTANTIALLY AMORPHOUS STATE, SELECTED FROM THE GROUP CONSISTING OF A METAL PHOSPHATE, PHOSPHITE, BORATE, BOROPHOSPHATE, BOROPHOSPHITE AND CHROMATE. |