Polyester is a synthetic polymer made of purified terephthalic acid

As you are grilling for your summer picnic you look around to see what items are made from polymers a topic you studied in your chemistry course. You notice (1) your outdoor jacket is made from polyester (2) your outdoor dinnerware is made from Melmac and (3) the seat cushion on your patio chair is made from polyurethane. Describe the structure of the polymer for each of the items you noticed (2 points per item) and how the structure of that polymer enables the production of this product