Continuous process for the production of aqueous urea-formaldehy

Details Continuous process for the production of aqueous urea-formaldehy Continuous process for the production of aqueous urea-formaldehy

1976-03-17

1977-12-27

Pertilla, Theodore E.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 69R, 260 95C, C08L 6124

Patent

active

040654214

ABSTRACT:
This invention relates to a process for the continuous production of aqueous urea-formaldehyde solutions having a mol ratio of formaldehyde to urea ranging from about 4.0 to about 6.0 and having a total solids content ranging from about 60% to about 85% by weight. This process utilizes a single multiple tray absorption column through which is passed the gaseous product from a formaldehyde converter counter current to a flow of aqueous urea solution. The column is maintained at a temperature ranging from about 40.degree. C to about 80.degree. C and dilute aqueous base is added at several points along the tower. Formaldehyde combines with the urea in the solution during their respective passages through the column to form the final product. A portion of the final product is circulated through the lower portion of the column.

REFERENCES:
patent: 2946403 (1960-07-01), Krueger et al.
patent: 3067177 (1962-12-01), Greco et al.

Affiliated with

Also associated with

Rating

Continuous process for the production of aqueous urea-formaldehy does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Continuous process for the production of aqueous urea-formaldehy, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Continuous process for the production of aqueous urea-formaldehy will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1037755