| 摘要 |
<p>An aqueous wood treating and/or preservative composition is provided. The composition has a pH of 9 or more. Of the ions present in the composition, the cations are copper ammonium and/or zinc ammonium ions, while the anions include arsenic or arsenious ions, as well as further anions of an acid ester of phosphoric acid or carbonate or bicarbonate or both such acid ester of phosphoric acid and a, which anions have a solubility of >/=0.2% in concentrated (28%) aqueous ammonia. The further anions are derived from components which are insoluble in water. Wood treating procedures and treated wood products so-provided are also provided.</p> |
