1. 26.4 Polymerization

2. Polymers from Monomers

5. High Density Polyethylene

11. Plastic container code system. CODE MATERIAL PERCENT OF TOTAL Polyethylene Terephthalate (PET) 20-30 percent High Density Polyethylene 50-60 percent Polyvinyl Chloride (PVC) 5-10 percent Low Density Polyethylene 5-10 percent Polypropylene 5-10 percent Polystyrene 5-10 percent All other resins 5-10 percent

19. Timeline of Plastics 1862 – First man-made plastic 1866 – Celluloid makes it’s debut 1891 – Rayon is discovered 1907 – Bakelite is invented 1913 – Cellophane causes the plastics craze

20. Timeline of Plastics 1926 – PVC is invented 1933 – Polyethylene is discovered 1933 – Saran makes it’s debut 1938 – Teflon is discovered 1939 – Nylon stockings hit market 1957 – Here comes velcro