which by definition contain more than PAN percentages between 35-85%. Incorporation of halogen groups increases the flame resistance of the fiber, which makes modacrylics suitable for the use in sleepwear, tents and blankets. Some mattresses also use them to meet the flame resistance requirements in North America. However, the disadvantage of these products is that they are costly and can shrink after drying.

PAN absorbs many metal ions and aids the application of absorption materials. Polymers containing amidoxime