It is chemically inert and resistant to attack by corrosive reagent . It is used in making oil seals , gaskets and also for non-stick surface coated utensils .
6 . Polyacrylonitrile
It is used as a substitute for wool in making commercial fibres as orIon or acrilan .
Polyamides
The polymers which contain an amide linkage in chain are known as pOlyamide , e . g ., nylon-6 , 6 .
1 . Nylon-66
It is obtained by the condensation of adipic acid and hexamethylenediamine with the elimination of water molecule
The polyamides are identified by numbers . These numbers refer to the number of carbon atoms in diamine and in the dibasic acid . As in the above case , the carbon atoms are 6 in each case , therefore the product is described as _ nylon-66 .