Substitute for amino and phenolic resins

Details Substitute for amino and phenolic resins Substitute for amino and phenolic resins

C - Chemistry, Metallurgy

08

G

400/1402

C08G 16/02 (2006.01) C08G 12/02 (2006.01) C08G 14/02 (2006.01) C08L 61/04 (2006.01) C08L 61/20 (2006.01) C08L 97/02 (2006.01) C08L 97/00 (2006.01)

Patent

CA 1290085

Abstract A substitute for amino and phenolic resins is disclosed. It is used in the polycondensation of such resins based on formaldehyde for bonding water penetrable cellulosic particles. The substitute comprises an aqueous solution of a) either at least one aldehyde together with at least one amide and/or together with at least one phenol, or a non-resinous condensation product of formaldehyde and urea, and b) a sugar or a sugar derivative or their by-products or a starch or its degradation products or a mixture thereof, and/or c) a raw and/or treated lignosulfonate. This substitute also reduces the free formalde- hyde of the resulting board without impairing the other properties thereof.

538971

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