Which of the following is not required for the production of dacron?

Triethylaluminium-titanium tetrachloride

Dacron or terylene is a polyester of ethylene glycol and terepthalic acid. It is produced by heating the two at 420-460K and in the presence of zinc acetate-antimony trioxide, which acts as a catalyst.

On the other hand, triethylaluminium-tetrachloride is used in the synthesis of HDPE.