Method for producing methylene urea polymers

Details Method for producing methylene urea polymers Method for producing methylene urea polymers

C - Chemistry, Metallurgy

08

L

C08L 75/02 (2006.01) C05C 9/02 (2006.01) C05G 3/00 (2006.01) C08K 3/24 (2006.01)

Patent

CA 2357367

The invention relates to a method for producing methylene urea polymers using urea, a formaldehyde product and an acid. Urea is introduced into a multi-screw extruder together with the formaldehyde product. In the extruder the products are mixed, compressed, heated and melted to form a flowable mixture. Acid is added to the melted mixture, whereby a mass having methylene urea polymers is formed. The mass is thereafter extruded.

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