Plastic Macromolecules
Macromolecules have molecular masses in the thousands. Each macromolecule is made up of single monomers which are then joined repeatedly over and over.  The joining together of smaller units (monomers) into very large molecules is called polymerization.
Nylon 6,6 is made from two molecules "adipyl chloride and hexadiamine"  Nylon is called nylon 6,6 because they join at the 6th carbon in each molecule.

                "Adipyl chloride"                                         "Hexadiamine"
These are the monomers
Nylon 6,6
If you look closely you can see the alternating units of 6 carbons, and a nitrogen, repeating endlessly.

neoprene (oil-resistant)

Saran  is made up the the monomer 1,1-dichloro-ethane
1,1-dichloro-ethane      The polymer is below and is called "Saran"

vinyl chloride becomes polyvinyl chloride(PVC)

Acrylnitrile becomes polyacrylnitril (Orlon)

Styrene becomes polystyrene a high impact plastic used in models.

methyl methacrylate (an ester)  becomes polymethyl methacrylate or "plexiglass"

Dacron, a polyester is made from two monomer units.
methyl terephthalate and ethylene glycol  and forms the polyester "Dacron"

Can you find the ester linkage?