PARTIALLY CROSS-LINKED POLYOLEFIN MIXTURES Russian patent published in 2003 - IPC

FIELD: polymer production. SUBSTANCE: invention relates to ionomer mixture, in particular to low-hardness partially cross-linked thermo-softening and elastomer polyolefin mixtures. Mixture comprises C2-C10-olefin polymers with grafted monomers containing at least one carboxylic group or carboxyl-derivative group and I and II-group metal ions. C2-C10-olefin polymers are polyolefin mixtures including 100 wt parts of heterophase polyolefin composition containing crystalline polypropylene and elastomer fraction of ethylene/propylene copolymer with ethylene content 40 wt % and 0-250 wt parts of elastomer polymer. Mixture may further contain reinforcing fillers, pigments, dyes, antioxidants, stabilizers, blowing agents, and other ingredients. EFFECT: reduced hardness while preserving satisfactory properties and middle and high temperatures and improved elastomer and touch characteristics. 5 cl, 9 tbl, 22 ex