Use of mixture of high molecular weight sulfonates as auxiliary

Details Use of mixture of high molecular weight sulfonates as auxiliary Use of mixture of high molecular weight sulfonates as auxiliary

1988-01-25

1988-09-20

Lieberman, Paul

Compositions: coating or plastic

Materials or ingredients

Pigment, filler, or aggregate compositions, e.g., stone,...

106214, 106505, 106503, 501146, C08J 712, C09C 306, C09J 306, C04B 3304

Patent

active

047723327

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.

REFERENCES:
patent: 3519454 (1970-07-01), Sawyer, Jr. et al.
patent: 3594203 (1971-07-01), Sawyer, Jr. et al.
patent: 3736165 (1973-05-01), Sawyer, Jr.
patent: 4106949 (1978-08-01), Malden
patent: 4174279 (1979-11-01), Clark et al.
patent: 4272297 (1981-06-01), Brooks et al.

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