| 摘要 |
<p>The invention relates to a process for obtaining a chemically modified cell-ligninic material, wherein a mixture consisting of wood dust and epichlorohydrine is epoxidated, at a weight ratio of 1:10, in 20% concentration sodium hydroxide solution, at a temperature of 40...70A C, for 3 h, it is neutralized with 20% concentration sodium monophosphate solution, it is washed with distilled water up to a neutral pH and it is dried at the room temperature, then it is esterified with stearoyl chloride, at a molar ratio of 1:1.2, in pyridine medium, at a temperature of 80A C, for 2 h, and it is neutralized with sulphuric acid 1M, it is washed with distilled water up to a neutral pH and it is dried at the room temperature.</p> |
