Although the total amount of recycled solvent is relatively stable in a solvent process of hydrogenated rosin production,the lighter compositions may decrease in the process because of evaporation.

• 溶剂法氢化松香生产过程中,循环使用的溶剂总量变化不大,但其轻组分因更容易挥发而在生产过程的各个环节流失,含量会逐渐降低;