Process for preparing stable aqueous suspensions of...

Details Process for preparing stable aqueous suspensions of... Process for preparing stable aqueous suspensions of...

C - Chemistry, Metallurgy

07

C

260/565.5

C07C 47/04 (2006.01) C07C 43/30 (2006.01)

Patent

CA 1091253

ABSTRACT OF THE DISCLOSURE: Stable aqueous suspensions of formaldehyde of at least 40% by weight concentration are prepared by heating aqueous formaldehyde solutions to a temperature of from about 40°C to about 80°C in the presence of stabilizing agents, in the presence or absence of methanol, and at a pH in the range of from about 0.5 to 1.5 or about 6.0 to about 8.0, cooling the mass to a temperature of from about 10°C to about 40°C, and adjusting the pH thereof to about 3.0 to 4.0, the concentration of formaldehyde in the starting aqueous solution ranging from about 40% to 60% by weight.

291254

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