| abstract |
The invention relates to a process for preparing a blend of polylactic acid and polyolefin polymers comprising the steps of i) using a polyolefin selected from polyethylene, polypropylene, and blends and copolymers thereof, ii) using polylactic acid, iii) using a polyolefin selected from polyethylene, polypropylene and mixtures and copolymers thereof grafted with at least one epoxide-functional monomer, iv) using a polylactic acid grafted with minus a carboxylic acid or a carboxylic anhydride functional monomer; v) mixing components i) to iv) at an elevated temperature in a range of 150 ° C to 260 ° C, with component i) being present in the range of 5.0 to 50.0% by weight, the component ii) being present at 40.0 to 90.0% by weight, the component iii) being present at 1.0 to 20.0% by weight, and the component iv) being present at height from 1.0 to 15.0% by weight, these values being calculated with respect to the sum of components i) to iv). |