C - Chemistry – Metallurgy – 08 – J
Patent
C - Chemistry, Metallurgy
08
J
134/55
C08J 7/12 (2006.01) C04B 33/04 (2006.01) C09C 1/42 (2006.01) C09C 3/06 (2006.01) D21H 19/40 (2006.01)
Patent
CA 1319583
ABSTRACT A heat stabilized slurry of bulked kaolin pigment is prepared by mixing a small but effective amount of a water-soluble cationic material such as a cationic polyelectrolyte flocculant with a kaolin clay pigment in the presence of water. The resultant bulked clay product is dispersed to form a high solids clay-water slurry useful in making aqueous coating colors suitable for manufacturing lightweight coated publication papers or the pigment can be used as a filler for paper webs. Slurries having stable viscosity during storage at elevated temperature and improved resistance to the formation of sediment are prepared by using as the dispersant a combination of an anionic lignosulfonate and an anionic naphthalene sulfonate formaldehyde complex in combination with a polyacrylate salt.
589018
Nemeh Saad
Sennett Paul
Slepetys Richard A.
Engelhard Corporation
Nemeh Saad
Sennett Paul
Sim & Mcburney
Slepetys Richard A.
LandOfFree
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