Dsm IP Assets B.v.

Ted Brink

Alexander Antonius Marie Stroeks

Katarina Tomic

Process for producing by blown film process a multilayer film containing at least one copolyamide layer and at least one polyolefin layer, in which the copolyamide comprises monomeric units of: &#x2022;aliphatic non-cyclic diamines X and aliphatic non-cyclic dicarboxylic acids Y or aliphatic non-cyclic &#x3b1;,&#x3c9;-amino acids Z, and &#x2022;diamines M and diacids N in an amount between 0.1 to 2 wt % based on the total amount of copolyamide, and in which M and N are cyclic. The invention also relates to a multilayer blown film containing at least one copolyamide layer and at least one polyolefin layer, in which the copolyamide comprises monomeric units of: &#x2022;aliphatic non-cyclic diamines X and aliphatic non-cyclic dicarboxylic acids Y or aliphatic non-cyclic &#x3b1;,&#x3c9;-amino acids Z, and &#x2022;diamines M and diacids N in an amount between 0.1 to 2 wt % based on the total amount of copolyamide, and in which M and N are cyclic.

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Echt, Netherlands

Ted Brink