| 摘要 |
A preservative for treating of wood, woodbased products or similar organic fibreproducts which includes one or more copper salts and perhaps zinc salts of weak organic acids, a stabilising chemical selected among the ammonium salt of a weak organic acid or a mixture of such an ammonium salt and an alkali metal salt of a weak organic acid, nitrite plus perhaps further admixture - and/or aid chemicals, where the preservative contains 0.1-1.0 parts by weight of nitrite calculated as sodium nitrite per 1.0 parts by weight of copper salt and perhaps zinc salt, calculated as copper acetate. The solution has a pH-value of 5.2-6.2 and contains at least 0.2 % by weight of ammonium - and alkali metal salt of weak organic acids. The preservative ensures a good fixation of the copper and prevents like that the leachability of it. |
