C - Chemistry – Metallurgy – 08 – L
Patent
C - Chemistry, Metallurgy
08
L
400/1300, 400/14
C08L 97/00 (2006.01) C08L 61/00 (2006.01) C08L 97/02 (2006.01) C09J 197/00 (2006.01) C08H 6/00 (2010.01)
Patent
CA 1150441
ABSTRACT OF THE DISCLOSURE A glue, substantially based on chlorolignin, for gluing cellulose materials such as wood, particle board etc. Chloro- lignin, which is a waste product from the cellulose industry, is an environmentally dangerous substance. It is recovered by membrane filtering of waste liquor, separating out compounds with a molecular weight lower than 1000-2000. It is then used alone, or mixed with common synthetic glues such as melamine or formaldehyde, fillers, hardeners etc. Formaldehyde, paraldehyde or ammonium chloride are suitable hardeners and the chlorolignin can also be prepolymerized with formaldehyde and/or paraldehyde.
341595
Grunewald Kurt H.
Mdnsson Inge G.
Eka Aktiebolag
Kirby Eades Gale Baker
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