Patent ID: 8957133
Filing Date: 2015-02-17
Classification: C08G,C08K,C08L

Abstract:
1. A process for producing a polyamide molding comprising a polylactam and microcapsules with a capsule core comprising a latent-heat-accumulator material and a polymer as a capsule wall, wherein the polyamide molding comprises from 30 to 50% by weight of polyamide, from 10 to 50% by weight of the microcapsules, and from 0 to 50% by weight of a filler, based in each case on the weight of the polyamide molding, and wherein the latent-heat-accumulator material is a linear paraffin, the process comprising: anionically polymerizing a lactam in a mold to form the polyamide molding by a temperature increase of a mixture comprising an activator, the lactam, the microcapsules, a catalyst, and optionally the filler, wherein the polymerizing is carried out by mixing the microcapsules, the lactam and the activator in the mold to form a molten polymerization mixture, then injecting the catalyst into the mold as a mixture with the lactam, wherein the polymerizing forms a polyamide molding comprising no more than 0.8% residual lactam.