Compositions comprising mineral particles in suspension and meth

Details Compositions comprising mineral particles in suspension and meth Compositions comprising mineral particles in suspension and meth

1985-10-22

1986-09-09

Willis, Prince E.

Compositions

Water-softening or purifying or scale-inhibiting agents

Plant or organic material containing

1621683, 1621811, 1621812, 1621813, 252175, C02F 100

Patent

active

046108017

ABSTRACT:
An aqueous slurry of mineral particles, for example calcium carbonate and/or calcium hydroxide, has a mineral solids concentration of at least 40% m/m and contains an agent that maintains the slurry at a pumpable viscosity but that acts as a flocculant upon dilution of the slurry. Suitable agents include cationic and amphoteric polyelectrolytes having nitrogen-containing groups, for example polyamines and dimethyl diallyl ammonium chloride polymers. The slurries may contain other components for example a synthetic hectorite or a dispersing agent such as a polyacrylate, polymethacrylate or polyphosphate. The slurries are useful in papermaking and in the treatment of sewage.

REFERENCES:
patent: 3892587 (1975-07-01), Abercrombie, Jr.
patent: 3961979 (1976-06-01), Abercrombie, Jr.
patent: 3994806 (1976-11-01), Rausch et al.
patent: 4024087 (1977-05-01), Lainer et al.
patent: 4402851 (1983-09-01), Lindahl
patent: 4450092 (1984-05-01), Huang

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