【摘要】 研究硫酸-甲苯法制备聚合松香过程中催化剂,反应温度,反应时间和气体环境等因素对松香聚合过程中反应体系色泽变化的影响.结果表明,在松香聚合过程中,引起副反应(氧化反应)的主要来源是催化剂浓硫酸,其很强的氧化性促进氧化反应,使聚合松香产品色泽加深,并且随着浓硫酸的浓度增大,反应时间加长和反应温度升高,松香聚合过程中反应体系的颜色变得越来越深.更多还原

【Abstract】 For the synthesis of polymerized-rosin with the sulfuric acid-toluene method,the effect of some factors such as the catalyst,the reaction temperature,the reaction time and the environment with different gas on the color-changing of the reaction system was studied.The results showed that the oxidation reaction,arised by the catalyst sulfuric acid,was the major reason which made a deeper color for the reaction system.The color-degree of the system was increased with the increasing of the H2SO4 concentration,the reaction temperature and the reaction time.更多还原