rosin

The role of polyoxyethylene triol,rosin polyester polyol and asphalt in the asphalt-polyurethane rigid foam was stressed.

重点介绍了聚氧乙三醇、芳烃聚酯多元醇在的作用。

From rosin purified abietic acid was prepared by using abietic acid as stared material acylamino surfactant was synthesized by maleric anhydride and diethanolamine.

用纯化得到的酸(枞酸)与马来酸酐反应得马来海酸,再与二乙醇胺反应制得马来酰胺基乙醇表面活情剂.

The authors discuss the applications of rosin and its derivant,including nonsulfide flotation and flotation separation of nonferrous metallic ions and organic compound from aqueous solution.

讨论了及其衍生物在非硫化物矿浮选分离、有色金属离子的浮选分离以及从水溶液浮选分离有机物等面的应用情况。