Process for the production of urea-formaldehyde adhesives or...

Details Process for the production of urea-formaldehyde adhesives or... Process for the production of urea-formaldehyde adhesives or...

C - Chemistry, Metallurgy

08

G

402/90

C08G 12/12 (2006.01) C07C 45/38 (2006.01)

Patent

CA 1070889

ABSTRACT OF THE DISCLOSURE A process for the production of urea-formaldehyde adhesives or resins comprises the stages of catalytically oxidizing methanol with air, condensing some of the gases obtained during oxidation, separating the condensed solution from the uncondensed gases, cooling and washing the uncondensed gases with a solution of cold polymerised formaldehyde to take up any methanol and formaldehyde which might be present, separately distilling the condensed solution and the cooled washed gases to produce two formaldehyde solutions, combining parts of the two solutions and mixing the concentrated aqueous solution of formaldehyde obtained from the distilling of the condensed solution with urea under predetermined conditions.

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