Extruded foams made with polylactides that have high...

Details Extruded foams made with polylactides that have high... Extruded foams made with polylactides that have high...

C - Chemistry, Metallurgy

08

J

C08J 9/12 (2006.01) C08G 63/08 (2006.01) C08L 67/04 (2006.01)

Patent

CA 2722437

This invention provides an economical process for extruding a PLA resin into a low density foam with a high closed cell content. Excellent quality, low density foam is produced easily and reproducibly. The PLA resin in the foam has a weight average molecular weight of at least 500,000 and an intrinsic viscosity of at least 1.4 deciliters/gram.

Cette invention porte sur un procédé économique d'extrusion d'une résine de PLA en une mousse de faible densité avec une teneur en alvéoles fermées élevée. Une mousse de faible densité et d'excellente qualité est facilement produite et de façon reproductible. La résine de PLA dans la mousse a une masse moléculaire moyenne en poids d'au moins 500 000 et une viscosité intrinsèque d'au moins 1,4 décilitres/gramme.

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