| 摘要 |
Improved method of making wood composition boards is provided wherein wood raw materials, such as wood shavings, are pressed into boards and heated at a temperature of 180 DEG - 250 DEG C after having been treated with a urea bonding and flame-proofing agent which has been pre-reacted with a catalyst which is either a water soluble salt containing non-precious metal, such as Li, Na, K, Ca, Al, Mg, Zn, Fe, Co, Sn or Pb, or a water-soluble mono- or disaccharide, or an organic amine, or a solution of these catalyts. catalysts. |
