Antistatic composition

An antistatic composition comprising a melt blend of (a) at least one ionic salt consisting of (i) a nonpolymeric acyclic, saturated cyclic, or aromatic nitrogen onium cation and (ii) a weakly coordinating fluoroorganic anion, said aromatic nitrogen onium cation being selected from the group consisting of

• wherein R1, R2, R3, R4, and R5 are independently selected from the group consisting of H, F, alkyl groups of from 1 to about 4 carbon atoms, two said alkyl groups joined together to form a unitary alkylene radical of from 2 to 4 carbon atoms forming a ring structure converging on N, and phenyl groups;
• and wherein said alkyl groups, said alkylene radicals, and said phenyl groups can be substituted with one or more electron withdrawing groups;
• and the conjugate acid of said anion being a superacid;
• and (b) at least one thermoplastic polymer.

An antistatic composition comprising a melt blend of (a) at least one ionic salt consisting of (i) a nonpolymeric nitrogen onium cation (1) selected from those represented by the formula

• (R1)4−zN+[(CH2)qOR2]z
• wherein each R1 is independently selected from the group consisting of alkyl, alicyclic, aryl, alkalicyclic, alkaryl, alicyclicalkyl, aralkyl, aralicyclic, and alicyclicaryl moieties that can contain one or more heteroatoms;
• each R2 is independently selected from the group consisting of hydrogen and the moieties described above for R1;
• z is an integer of 1 to 4;
• q is an integer of 1 to 4;
• or (2) selected from the group consisting of
• wherein R1, R2, R3, R4, R5, and R6 are independently selected from the group consisting of H, F, alkyl groups of from 1 to about 4 carbon atoms, two said alkyl groups joined together to form a unitary alkylene radical of from 2 to 4 carbon atoms forming a ring structure converging on N, and phenyl groups;
• and wherein said alkyl groups, said alkylene radicals, and said phenyl groups can be substituted with one or more electron withdrawing groups;
• and (ii) a weakly coordinating fluoroorganic anion, the conjugate acid of which is a superacid, and that is selected from the group consisting of bis(perfluoroalkanesulfonyl)imides and tris(perfluoroalkanesulfonyl)methides;
• and (b) at least one thermoplastic polymer.