| abstract |
An expandable granulate (G) having a nitrogen content of 8% by weight [based on (G)], whose particles each contain at least 10 cavities per mm 3 in the size range from 1 to 200 μm and which contains a polymer component (P) a glass transition temperature in the range of> 105 ° C, formed fromnPS)n75 to 100 wt .-% (based on P) of a styrene polymer component which is formed fromnPS1)n10 to 100 wt .-% (based on P) of one or more styrene polymers, each containingnPS11)nFrom 60 to 100% by weight (based on PS1) of copolymerized styrene (PS111) or of alpha-methylstyrene (PS112) or of a copolymerized mixture of alpha-methylstyrene and styrene (PS113),nPS12)n0 to 40% by weight (based on PS1) of at least one copolymerized monomer from the group of maleic anhydride, maleimides, (C 1 -C 10) -alkyl (meth) acrylates and (meth) acrylic acid,nPS2)n0 to 90 wt .-% (based on P) of one or more of PS1 different styrene copolymers containingnPS21)n60 to 82 wt .-% (based on PS2) of copolymerized styrene (PS11) or alpha-methylstyrene (PS12) or a copolymerized mixture of styrene and alpha-methylstyrene (PS13) andnPS22)n18 to 40 wt.% (Relative to PS2) copolymerized acrylonitrilenandnPT)n0 to 25 wt .-% (based on P) of one or more thermoplastic polymers from the group consisting of aromatic polyethers, polyolefins, polyacrylates, polycarbonates (PC), polyesters, polyamides, polyethersulfones (PES), polyether ketones (PEK) and polyether sulfides (PES),nwith the proviso that in addition to the component PS11) at least one of the components PS12), PS2) and PT must be present in a proportion of at least 5 wt .-% (based in each case on PS1), PS or P),nis suitable for the production of particle foam moldings, which are particularly suitable for use in composite moldings in furniture. |