| 摘要 |
<p>The invention relates to a chitosan-containing preservative composition also comprising a first anion oxidizable by air to form a second anion the complex whereof with chitosan is less water-soluble than is the complex of said first anion with said chitosan. The invention further relates to a chitosan-containing preservative composition comprising said second anion and a preservative composition kit comprising said chitosan and said first anion. The invention still further relates to a method for producing said preservative composition, including the steps of dissolving the chitosan in an acid, optionally depolymerising the chitosan with an oxidizing agent, and contacting the chitosan with said first anion. The invention also relates to different methods of treating substrates with the preservative, different uses of the preservative and different products treated with the preservative compostion. Said materials include wood, fabric, e.g. fish farming nets, paint and cement compositions.</p> |
