Process for preparing stable aqueous suspensions of formaldehyde

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

1981-07-29

1983-06-28

Lone, Werren B.

Organic compounds -- part of the class 532-570 series

Organic compounds

Oxygen containing

C07C 47058

Patent

active

043907270

ABSTRACT:
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.degree. C. to about 80.degree. 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.degree. C. to about 40.degree. C., and adjusting the pH thereof to about 3.0 to 4.0.

REFERENCES:
patent: 3379769 (1968-04-01), Prinz et al.
patent: 3423467 (1969-01-01), Dakli et al.
patent: 3770830 (1973-11-01), Reni et al.

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