Thermoplastische Elastomere guter Einfärbbarkeit und hoher Festigkeit und Elastizität sowie daraus hergestellte hochschlagzähe Polymerblends

Thermoplastic elastomers (I) with good colorability, high strength and elasticity, have embedded elastomer particles with an average diameter of 0.05-5 mu m and are obtained by reacting (co)polypropylene and elastomeric 4-12 carbon olefin co- and/or terpolymer with unsaturated monomer(s) and optionally free radical thermal initiator in the melt, with addition of conventional additives and processing aid before and/or after reaction. New thermoplastic elastomers (I) with embedded elastomer particles having average diameter of 0.05-5, preferably 0.1-1 mu m are obtained by reacting mixtures of 20-80, preferably 40-60 wt.% propylene homopolymer(s) (homoPP) and/or propylene copolymer(s) (coPP) and 80-20, preferably 60-40 wt.% elastomeric 4-12 carbon (C) olefin co- and/or terpolymer(s) with 0.10-4.0, preferably 0.2-1.5 wt.% of specified unsaturated monomer(s) and 0-4.0, preferably 0.2-1.5 wt.% of specified free radical thermal initiator(s) (with respect to total polymers) in the melt, with addition of 0.01-2.5 wt.% stabilizer(s), 0.1-1 wt.% antistatic(s), 0.2-3 wt.% pigment(s), 0.05-1 wt.% nucleating agent, 5-40 wt.% filler and/or reinforcement additives, 2-20 wt.% flame retardant and/or 0.01-1 wt.% processing aid (all with respect to total polymers) before and/or after reaction. Independent claim are also included for the following: (a) high strength polymer blends; and (b) preparation of the elastomers.