| 摘要 |
Certain nitrogen-containing derivatives of cellulose (products from the reaction of unsaturated cellulose esters or ethers with organic nitrogen-containing bases) spontaneously degrade when they are warmed slightly above room temperature to yield products that are insoluble in common organic solvents such as acetone, whereas the N-containing cellulosic materials, as originally prepared, exhibit high solubility in such solvents. It has been discovered that a small amount of phenolic type organic antioxidant inhibits such undesirable spontaneous degradation.
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