The xanthate derivative method, halogenated solvent method and amide LiCl method for preparing chitin fiber are introduced.
介绍了制备甲壳素纤维的黄化法、含卤溶剂法和酰胺氯化锂法。
In order to protect PVC sleeve, printed marks and sealing material, capacitors can not be cleaned with halogenated chemicals or similar solvent such as trichlorethylene, Xylene or Acetone, etc.
为了保护塑胶套管、印刷标示以及封口材料不被破坏，电解电容器不得以卤化化学药品或类似溶剂，作为电解电容器洗涤之用，如三氯乙烯、二甲苯类或酮类等。
The cleaning agent USES water as a solvent instead of toxic solvent such as benzenes, phenol aromatic hydrocarbons and halogenated hydrocarbon.
本发明不含苯类、酚类芳烃，卤代烃等有毒溶剂，以水为溶剂。
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