Method of forming low temperature dispersions

Details Method of forming low temperature dispersions Method of forming low temperature dispersions

1977-12-30

1980-05-20

Lovering, Richard D.

Compositions

Preservative agents

Anti-corrosion

71 64C, 106308B, 106308N, 252313R, 252317, B01J 1300

Patent

active

042038642

ABSTRACT:
Dispersions with lowered freezing points are provided by dissolving a dispersing agent in water, adding urea, adding a particulate inorganic solid, and then adding alcohol as a freezing point depressant. Dispersions formed in this manner can contain 20 to 75% inorganic solids in suspension without flocculating in the presence of the alcohol. Alternatively, the dispersant can be dissolved in an aqueous urea solution and the fine, particulate inorganic solid can be dispersed in the solution after which the alcohol may be added. These compositions exhibit depressed freezing points and can still be transported as a liquid at lower temperatures.

REFERENCES:
patent: 2012232 (1935-08-01), Kline et al.
patent: 2038724 (1936-04-01), Eichengrun
patent: 2280994 (1942-04-01), Booth
patent: 2440601 (1948-04-01), Dickerman
patent: 3738938 (1973-06-01), Barrett

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