Which catalyst is used in the preparation of dacron?

Explanation

**Step-by-Step Text Solution:**

1. **Understanding Dacron**: Dacron is a type of polyester, specifically polyethylene terephthalate (PET), which is widely used in textiles and plastic bottles.

2. **Catalysts in Polymerization**: In the preparation of Dacron, catalysts are used to speed up the polymerization process.

3. **Identifying the Catalysts**: The catalysts commonly used in the production of Dacron are zinc acetate and antimony trioxide.

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