b. from about 1% to about 40% by weight of a substantially water-insoluble quaternary ammonium anti-static agent of the formula: ##STR1## wherein R1 and R2 represent hydrocarbyl groups containing from about 10 to about 22 carbon atoms, R3 and R4 represent hydrocarbyl groups containing from 1 to about 4 carbon atoms, X is an anion and n is an integer from 1 to 3; and