Plastic A contains 2.5–3% of PDQ-H additive.to disintegrate plastic by oxidation and photodegradation. The PDQ-H additive is a Masterbatch additive to be used with either polyethylene or polypropyleneMater-Bi plastic is made from starch (corn) and manufactured. This is patented vegetable Novamont plastic.On coming into contact with air and water, it can dissolve within 45 days.