Why is TDPA™ plastic not compostable?

TDPA™ plastics require oxygen, moisture and the presence of micro-organisms to biodegrade. These requirements are not present in industrial compositing conditions and consequently, TDPA™ plastics do not meet the requirement of 90% biodegradability in 6 months in an industrial composting facility specified by composting standards. TDPA™ plastics should not be marketed as compostable.