| 摘要 |
The present invention relates to the method for preparing the elasticizer which includes purifying the petroleum distillate and separating the extractive by the selective solvent, the extractive is treated by dimethylsulfoxide with weight ratio 1 :( 2.0-4.0) at the temperature ranging from 30 to 120 degree, and the gained raffinate is used as elasticizer. The extractive is the remaining extractive or the mixture of the remaining and the distilled extractive. The extractive is diluted by the alkane-cycloparaffin solvent with weight ratio 1: (0.1-0.5). The elasticizer includes the following components: the aromatic hydrocarbons with the weight percentage from 60 to 90, wherein the polycyclic aromatic hydrocarbon provided with three or more rings is 1.5 to 2.9 percentages by weight; the rest is alkane-cycloparaffin and resin. |
