B - Operations – Transporting – 27 – N
Patent
B - Operations, Transporting
27
N
18/1008, 6/15, 1
B27N 3/00 (2006.01) B27N 1/00 (2006.01) C08L 61/00 (2006.01) C08L 61/20 (2006.01) C08L 97/02 (2006.01)
Patent
CA 1253657
ABSTRACT OF THE DISCLOSURE: In a method for producing chip- or fibre-board, a fluid concentrate is added to at least one component of the raw materials used to produce the said chip- and/or fibre- board. These raw materials comprise a cellulosic material (eg wood chips) and a bonding agent preferably in a glue bath. The fluid concentrate is preferably added to the organo-chemical bonding agents, or to the glue-bath containing the bonding agent. The fluid concentrate consists of specific parts by weight of boric acid and a water-soluble compound, or a water-soluble mixture of compounds, containing at least one alcohol, preferably a primary alcohol, and at least one water-soluble aliphatic amine or polyamine and/or an alkoxyamine or an alkanolamine, as well as water if necessary. These ingredients are mixed with each other and are then pressed, using a specified pressing power at a specified temperature. The fluid concentrate is thus used as an additive to organo-chemical bonding agents, or to a glue-bath containing such a bonding agent for the production of chip- or fibre-board. Use of the stated amounts of the fluid concentrate significantly improves the flame-retarding properties of the boards thus made.
493500
Metzner Wolfgang
Osterloff Eberhard
Seepe Detlef
Desowag Materialschutz Gmbh
Robic Robic & Associes/associates
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