煤焦油是伦敦煤气道路照明几乎无限的副产物，利用便宜量大的煤焦油，染厂于1857年开始生产世界上第一种合成染色材料。
Utilising the cheap and plentiful coal tar that was an almost unlimited byproduct of London's gas street lighting, the dye works began producing the world's first synthetically dyed material in 1857.
以工业副产物木素磺酸和焦油酚为主要原料研制出一种新的合成鞣剂。
A new syntan product prepared with tar phenol and lignin sulfonic acid.
采用新的工艺方法，可以高收率地得到高纯度的目的产物，减少焦油的生成量和缩短反应时间，因而可大大提高经济效益。
By using this new process the end product can he obtained with high yield and excellent purity. Tar formation and reaction time can he also reduced thus increasing the economic, results greatly.
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