| 摘要 |
PURPOSE:To provide a no-carbon copy paper whose developing is stable, by using the micro-capsules of an organic solvent solution containing an electron-donating colourless organic compound making developing through the reaction thereof with an electron-accepting material, and maleate or azelate ester for coating. CONSTITUTION:An electron-donating colourless organic compound making developing through the reaction thereof with an electron-accepting material is dissolved in an organic solvent such as alkylnaphthalene and diarylethane. Further, 5-30% by weight of maleate such as ethyl and diallyl maleates and azelate such as dimethyl and dioctyl azelates is added to the organic solvent so stabilize developing. Thus- obtained mixture is micro-capsuled and applied together with various kinds of additives to paper. Thus, no-carbon copy paper can be obtained whose developing is stable because of high light resistance and low heat fading rate. |
