FOAM MATERIAL PARTICLES BASED ON LONG-CHAIN POLYAMIDES

The invention relates to foam material particles having a bulk density below 300 kg/m based on polyamides, containing 85 to 100 wt% of at least one copolyamide, which can be obtained through polymerisation of the components (A)15 to 84 wt% of at least one lactam, (B) 16 to 85 wt% of a monomer mixture (M), which contains components (B1) at least one C32-C40-dimer acid and (B2) at least one C4-C12-diamine, the monomer mixture (M) containing in the range from 45 to 55 mol % of component (B1) and in the range from 45 to 55 mol % of component (B2), based on the total amount of substance in the monomer mixture (M), and the sum of the components (A) and (B) producing 100 wt%. The invention further relates to the production thereof. 本发明涉及堆积密度低于300kg/m3的基于聚酰胺的泡沫材料颗粒，其包含85至100重量％的至少一种共聚酰胺，所述共聚酰胺可通过以下组分的聚合获得：组分(A)15至84重量％的至少一种内酰胺，(B)16至85重量％的单体混合物(M)，其包含组分(B1)至少一种C32-C40二聚酸和(B2)至少一种C4-C12二胺，单体混合物(M)包含45至55摩尔％的组分(B1)和45至55摩尔％的组分(B2)，基于单体混合物(M)中物质的总量计，并且组分(A)和(B)的总和为100重量％。本发明还涉及其制备。