Production of wood glue based on urea formaldehyde condensates

Details Production of wood glue based on urea formaldehyde condensates Production of wood glue based on urea formaldehyde condensates

C - Chemistry, Metallurgy

08

L

400/7338

C08L 61/24 (2006.01) C08G 12/12 (2006.01) C09J 161/24 (2006.01)

Patent

CA 1039430

ABSTRACT OF THE DISCLOSURE: Condensates containing urea and form- aldehyde in a molar ratio of from 1:2.5 to 1:4.5 are converted into wood glue by allowing the viscosity to increase at a pH of from 1 to 3 and at only slightly elevated temperature and then adding urea at a pH of 7 to 9.

204041

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