FIELD: polymers. SUBSTANCE: invention relates to a field of preparing dielectric polymeric compositions based on polypropylene that can be used for making constructional electrotechnical articles. Polypropylene-base polymeric composition has glass hollow microspheres and fiber glass as filling agents. Ratio of components is, wt.%: polypropylene, 80; glass hollow microspheres, 10-15; fiber glass 10-15. The use of proposed polymeric composition ensures to increase values of electric strength of articles. EFFECT: increased electric strength value. 1 tbl
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