Patent ID: 7619025

Claim:
A composition which comprises: a reactively blended mixture of: (a) a first polymer which is polylactic acid (PLA); (b) a second polymer which is poly-(butylene adipate-co-terephthalate (PBAT), wherein (i) the weight ratio of (a) to (b) is between about 70:30 and 30:70, (ii) the composition has a percent elongation in the break of between 6% and 568%, and (iii) the composition has an Izod impact between about 87 J/m and 665 J/m; and (c) a quaternary ammonium salt modified clay in an amount between about 1% and 10% by weight of (a) and (b), the quaternary ammonium salt comprising a methyl hydrogenated tallow, 2-ethylhexyl quaternary ammonium cation, wherein the composition has an oxygen permeability ranging from about 80 cc·mil/(100 in 2 ·day·atm) to about 180 cc·mil/(100 in 2 ·day·atm).