Answer to Question 1
Regeneration is the conversion of plastic material back into the chemicals used to make them originally. The advantage of this method is that the chemicals have a higher value than some of the mixed recycle of plastics from which the regenerated chemicals were derived.
Answer to Question 2
A MSDS is a Material Safety Data Sheet that is sent by the manufacturer of the raw material. The MSDS indicates the chemical components in a liquid material and any potential hazards. It also indicates parameters such as boiling point, flash point, chemical reactivity, and toxicity.